PWR


Line plots across dimensions of each concept
Tables

Table of contents


us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:SharesOutstanding
us-gaap:StatementClassOfStock
us-gaap:CommonStockSharesIssued
us-gaap:StatementClassOfStock
us-gaap:CommonStockSharesOutstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic

us-gaap:EarningsPerShareBasic

us-gaap:EarningsPerShareDiluted

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments
us-gaap:ContractWithCustomerBasisOfPricing
us-gaap:StatementGeographical

us-gaap:CostOfGoodsAndServicesSold

us-gaap:GrossProfit

us-gaap:SellingGeneralAndAdministrativeExpense

us-gaap:OperatingIncomeLoss
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments
us-gaap:ConsolidationItems, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

us-gaap:InterestExpense

us-gaap:OtherNonoperatingIncomeExpense

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest

us-gaap:IncomeTaxExpenseBenefit

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:ComprehensiveIncomeNetOfTax

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest

us-gaap:NetIncomeLoss

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest

us-gaap:Assets

us-gaap:Liabilities

us-gaap:LiabilitiesAndStockholdersEquity

us-gaap:StockholdersEquity

us-gaap:AssetsCurrent

us-gaap:CashAndCashEquivalentsAtCarryingValue
us-gaap:CashAndCashEquivalents

us-gaap:AccountsReceivableNetCurrent

us-gaap:InventoryNet

us-gaap:PrepaidExpenseAndOtherAssetsCurrent
us-gaap:StatementGeographical
us-gaap:PropertyPlantAndEquipmentNet

us-gaap:Goodwill
us-gaap:StatementBusinessSegments

us-gaap:IntangibleAssetsNetExcludingGoodwill

us-gaap:FiniteLivedIntangibleAssetsNet
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:OtherAssetsNoncurrent

us-gaap:LiabilitiesCurrent

us-gaap:DebtCurrent

us-gaap:LongTermDebtCurrent

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent

us-gaap:MinorityInterest
pwr:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:OtherLiabilitiesNoncurrent
us-gaap:LossContingenciesByNatureOfContingency

us-gaap:StockholdersEquity

us-gaap:RetainedEarningsAccumulatedDeficit

us-gaap:TreasuryStockValue

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:NetCashProvidedByUsedInOperatingActivities

us-gaap:NetIncomeLoss

us-gaap:ProfitLoss
us-gaap:StatementEquityComponents

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet

us-gaap:IncreaseDecreaseInInventories

us-gaap:NetCashProvidedByUsedInInvestingActivities

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment

us-gaap:PaymentsToAcquireInvestments

us-gaap:NetCashProvidedByUsedInFinancingActivities

us-gaap:PaymentsForRepurchaseOfCommonStock
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

us-gaap:ShareBasedCompensation
us-gaap:AwardType

us-gaap:OperatingLeaseRightOfUseAsset

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents

us-gaap:ProceedsFromRepaymentsOfShortTermDebt
us-gaap:AwardType
pwr:AmountInCashReceivedForEachRSUIsEqualToFairValueOfThisNumberOfQuantaCommonStockShares

pwr:AutoLiabilityInsuranceClaimsDeductible
us-gaap:SubsequentEventType

pwr:BusinessAcquisitionsProFormaAmortizationOfIntangibleAssets

pwr:BusinessAcquisitionsProFormaGrossProfit

pwr:BusinessAcquisitionsProFormaNetIncomeLossAttributableToCommonStockNetOfTax

pwr:BusinessAcquisitionsProFormaSellingGeneralAndAdministrativeExpenses
us-gaap:BusinessAcquisition
pwr:BusinessCombinationCashConsiderationTransferredOrToBeTransferred

pwr:ContractWithCustomerCumulativeCatchUpAdjustmentToGrossProfitChangeInEstimate
us-gaap:TypeOfArrangement

pwr:EmployersLiabilityInsuranceClaimsDeductible
us-gaap:SubsequentEventType
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
pwr:ExchangeableSharesExchangedForCommonStock
us-gaap:Range
pwr:FairValueInputsCustomerAttritionRates
us-gaap:Range
pwr:FairValueInputsRateOfReturn

pwr:GeneralLiabilityInsuranceClaimsDeductible
us-gaap:SubsequentEventType
us-gaap:ConcentrationRiskByType
pwr:NumberOfCustomersRepresentingTenPercentOrMoreOfRevenue

pwr:NumberOfInternalDivisions

pwr:NumberOfSharesOfCommonStockReceivedForEachExchangeableShare

pwr:OtherComprehensiveIncomeLossOtherNetOfTax

pwr:OtherComprehensiveIncomeLossOtherTax
us-gaap:StatementGeographical
pwr:PercentageOfForeignRevenue

pwr:PercentageOfTotalRevenues
us-gaap:ContractWithCustomerBasisOfPricing
us-gaap:StatementGeographical
us-gaap:Range, us-gaap:AwardType
pwr:PerformanceBasedAwardPerformancePercentage

pwr:RevenueFromContractWithCustomerPercentageOfRevenueRecognizedOverTime

pwr:ShortTermLeaseAndVariableLeaseCost
us-gaap:AwardType
us-gaap:AllocatedShareBasedCompensationExpense

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs

us-gaap:AmortizationOfFinancingCosts

us-gaap:AmortizationOfIntangibleAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued

us-gaap:BusinessAcquisitionProFormaEarningsPerShareBasic

us-gaap:BusinessAcquisitionProFormaEarningsPerShareDiluted

us-gaap:BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax

us-gaap:BusinessAcquisitionsProFormaRevenue
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationAcquisitionRelatedCosts
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationBargainPurchaseGainRecognizedAmount
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferred1
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect

us-gaap:CommonStockDividendsPerShareDeclared

us-gaap:DebtInstrumentInterestRateDuringPeriod
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:DebtInstrumentPeriodicPaymentPrincipal

us-gaap:DeferredIncomeTaxExpenseBenefit
pwr:CumulativeEffectPeriodOfAdoption

us-gaap:Depreciation
us-gaap:ConsolidationItems
us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:DividendsCash
us-gaap:StatementEquityComponents

us-gaap:DividendsCommonStockCash

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations
us-gaap:AwardType
us-gaap:EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings

us-gaap:FinanceLeaseInterestExpense

us-gaap:FinanceLeaseInterestPaymentOnLiability

us-gaap:FinanceLeasePrincipalPayments

us-gaap:FinanceLeaseRightOfUseAssetAmortization
us-gaap:BusinessAcquisition
us-gaap:FinitelivedIntangibleAssetsAcquired1
us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:GainLossOnSaleOfPropertyPlantEquipment

us-gaap:GoodwillAcquiredDuringPeriod
us-gaap:BusinessAcquisition
us-gaap:StatementBusinessSegments

us-gaap:GoodwillForeignCurrencyTranslationGainLoss
us-gaap:StatementBusinessSegments

us-gaap:GoodwillPurchaseAccountingAdjustments
us-gaap:StatementBusinessSegments

us-gaap:IncomeLossFromEquityMethodInvestments
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:IncomeTaxesPaid

us-gaap:IncreaseDecreaseInAccountsAndNotesReceivable

us-gaap:IncreaseDecreaseInContractWithCustomerAsset

us-gaap:IncreaseDecreaseInContractWithCustomerLiability

us-gaap:IncreaseDecreaseInOperatingCapital

us-gaap:IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets

us-gaap:IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements

us-gaap:InterestPaidNet

us-gaap:InvestmentIncomeInterest

us-gaap:LeaseCost

us-gaap:LineOfCreditFacilityAverageOutstandingAmount

us-gaap:LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod
us-gaap:Range, us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
us-gaap:StatementEquityComponents

us-gaap:NumberOfReportableSegments

us-gaap:OperatingLeaseCost
us-gaap:RelatedPartyTransactionsByRelatedParty
us-gaap:OperatingLeaseExpense

us-gaap:OperatingLeasePayments

us-gaap:OtherComprehensiveIncomeLossNetOfTax
us-gaap:StatementEquityComponents

us-gaap:OtherNoncashIncomeExpense

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities

us-gaap:PaymentsOfDividendsCommonStock

us-gaap:PaymentsOfDividendsMinorityInterest

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired

us-gaap:PaymentsToAcquireIntangibleAssets

us-gaap:ProceedsFromDivestitureOfBusinesses

us-gaap:ProceedsFromIncomeTaxRefunds

us-gaap:ProceedsFromInsuranceSettlementInvestingActivities

us-gaap:ProceedsFromLongTermLinesOfCredit

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment

us-gaap:ProvisionForDoubtfulAccounts

us-gaap:RepaymentsOfLongTermLinesOfCredit

us-gaap:RepaymentsOfOtherLongTermDebt

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate
us-gaap:AwardType
us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

us-gaap:StockIssuedDuringPeriodValueAcquisitions
us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation
us-gaap:StatementEquityComponents

us-gaap:StockRepurchasedDuringPeriodShares

us-gaap:StockRepurchasedDuringPeriodValue

us-gaap:StockholdersEquityOther
us-gaap:StatementEquityComponents
us-gaap:StatementClassOfStock
us-gaap:TreasuryStockSharesAcquired
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:TreasuryStockValueAcquiredCostMethod
us-gaap:PlanName
us-gaap:StatementClassOfStock
us-gaap:StatementEquityComponents
us-gaap:BusinessAcquisition
pwr:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractAssetsCurrent
us-gaap:BusinessAcquisition
pwr:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractLiabilities
us-gaap:TypeOfArrangement
pwr:ContractWithCustomerContractValue
us-gaap:BalanceSheetLocation
pwr:ContractWithCustomerLiabilityDeferredRevenuesCurrent

pwr:LeasesOptionToPurchaseAssetFailedSaleLeaseback

pwr:OperatingAndFinanceLeaseLiability

pwr:OperatingAndFinanceLeaseRightOfUseAsset

pwr:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization

pwr:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization

pwr:RevenueRecognizedRelatedToUnapprovedChangeOrdersAndClaims

pwr:ShortTermDebtAndLongTermDebtCurrentMaturities
us-gaap:MajorCustomers, us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType
us-gaap:AccountsReceivableNet

us-gaap:AccountsReceivableNetNoncurrent

us-gaap:AdditionalPaidInCapitalCommonStock

us-gaap:AllowanceForDoubtfulAccountsReceivable
pwr:CumulativeEffectPeriodOfAdoption

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent
pwr:CumulativeEffectPeriodOfAdoption
pwr:InvestmentsByConsolidatedAndNonconsolidatedEntities
us-gaap:AssetsNet
us-gaap:BusinessAcquisition
us-gaap:BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationContingentConsiderationLiability
us-gaap:FairValueByFairValueHierarchyLevel
us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent
us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType
us-gaap:BusinessCombinationContingentConsiderationLiabilityMeasurementInput
us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency
us-gaap:BusinessCombinationContingentConsiderationLiabilityNoncurrent
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment
us-gaap:BusinessAcquisition
us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

us-gaap:CashEquivalentsAtCarryingValue

us-gaap:ContractReceivableRetainageDueAfterOneYear

us-gaap:ContractReceivableRetainageDueOneYearOrLess

us-gaap:ContractWithCustomerAssetNetCurrent

us-gaap:ContractWithCustomerLiabilityCurrent

us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
pwr:CumulativeEffectPeriodOfAdoption
us-gaap:StatementEquityComponents
us-gaap:AwardType
us-gaap:DeferredCompensationShareBasedArrangementsLiabilityCurrent

us-gaap:DeferredIncomeTaxLiabilitiesNet
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestmentOwnershipPercentage
us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName
us-gaap:EquityMethodInvestments

us-gaap:FinanceLeaseLiability

us-gaap:FinanceLeaseLiabilityCurrent

us-gaap:FinanceLeaseLiabilityNoncurrent

us-gaap:FinanceLeaseRightOfUseAsset

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:FiniteLivedIntangibleAssetsGross
us-gaap:FiniteLivedIntangibleAssetsByMajorClass

us-gaap:GoodwillGross
us-gaap:StatementBusinessSegments

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss
us-gaap:StatementBusinessSegments
us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass
us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill
us-gaap:LossContingenciesByNatureOfContingency
us-gaap:InsuranceSettlementsReceivable
us-gaap:LossContingenciesByNatureOfContingency
us-gaap:InsuranceSettlementsReceivableNoncurrent

us-gaap:IntangibleAssetsGrossExcludingGoodwill
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LettersOfCreditOutstandingAmount
us-gaap:Currency, us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LossContingenciesByNatureOfContingency
us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense

us-gaap:LineOfCredit
us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:Currency, us-gaap:DebtInstrument
us-gaap:DebtInstrument
us-gaap:Currency, us-gaap:CreditFacility, us-gaap:DebtInstrument
us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

us-gaap:LongTermDebtAndCapitalLeaseObligations

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent

us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities

us-gaap:OperatingLeaseLiabilityCurrent

us-gaap:OperatingLeaseLiabilityNoncurrent
dei:LegalEntity, us-gaap:OtherCommitments, us-gaap:StatementScenario
us-gaap:OtherCommitment
us-gaap:OtherCommitments, us-gaap:StatementScenario
us-gaap:StatementScenario, us-gaap:OtherCommitments

us-gaap:OtherLongTermDebt
us-gaap:BalanceSheetLocation
us-gaap:RestrictedCashAndCashEquivalents

us-gaap:RevenueRemainingPerformanceObligation

us-gaap:RevenueRemainingPerformanceObligationPercentage
us-gaap:AwardType
us-gaap:SharePrice

us-gaap:ShortTermBorrowings

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents
us-gaap:StatementEquityComponents

us-gaap:TreasuryStockShares

us-gaap:UnbilledContractsReceivable

Tables

  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
 us-gaap:SharesOutstanding us-gaap:StatementClassOfStock,us-gaap:StatementEquityComponents pwr:CommonStockClassUndefined,us-gaap:CommonStock▁▃▃▃▃▃▆▆▆█137142142142142141148149149153NANANA
 us-gaap:SharesOutstanding us-gaap:StatementClassOfStock,us-gaap:StatementEquityComponents pwr:ExchangeableShares,us-gaap:CommonStock▄▄▄▄▄▄▄▄▄▄0000000000NANANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementClassOfStock pwr:CommonStockClassUndefined█▄▄▄▄▁161159159159159157NANANA155NANANA
 us-gaap:CommonStockSharesIssued us-gaap:StatementClassOfStock pwr:ExchangeableShares▁▁▁▁▁▁▁▁▁▁██000000000033NA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock pwr:CommonStockClassUndefined▁████▇137142142142142141NANANA153NANANA
 us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock pwr:ExchangeableShares▁▁▁▁▁▁▁▁▁▁▆█000000000034NA
us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding 146NA147147146NA153154157NA158156155
us-gaap:WeightedAverageNumberOfSharesOutstandingBasic 144NA145145145NA152153156NA157155155
us-gaap:EarningsPerShareBasic ▂▇█▁▇▃▇▄▁▆▅▃0.270.80999999999999980.930.190.830.37999999999999990.820.490.240.730.570.41NA
us-gaap:EarningsPerShareDiluted ▂▇█▁▇▃▇▄▁▆▅▃0.260.80.920.190.820.37999999999999990.810.480.240.720.560.41NA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax ▄▇█▅▅▇▆▄▂▃▄▁▁2764311233522839280731122985265624172478260922002178
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pwr:ElectricPowerInfrastructureServices▆▇█▅▃▃▂▁▁176718471876173416641659161715701568NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pwr:PipelineAndIndustrialInfrastructureServices▃▆█▄▄█▇▄▁9971265147611041143145313671086849NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractWithCustomerBasisOfPricing pwr:UnitPriceContracts▅▆█▆▄▇▆▆▁974103512411020895111410821018613NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractWithCustomerBasisOfPricing us-gaap:FixedPriceContract▄█▅▁▃▅▅▃▅1101170712387159531337123910321225NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractWithCustomerBasisOfPricing us-gaap:TimeAndMaterialsContract▄▁▆█▇▄▄▃▃6883698721103958660662605579NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:CA▄▅▃▁▆█▇▃▇384407342202485608522315538NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical country:US▄▆█▆▄▅▅▄▁226825552872256122002351231721931712NANANANA
 us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical us-gaap:NonUs496NANANA606NANANANANANANANA
us-gaap:CostOfGoodsAndServicesSold ▄▆█▅▄▆▅▃▁▁▂24312669287925192443269225592322211621552258NANA
us-gaap:GrossProfit ▃▇█▃▄▆▆▃▂▃▄▂▁332443473319363419425333301322350302266
us-gaap:SellingGeneralAndAdministrativeExpense ▆█▇▅▆▄▅▃▄▃▃▁▁230255245223231212224206215206201185184
us-gaap:OperatingIncomeLoss ▂▅█▂▄▅▇▄▂▁▅▄▂8014720978119149192123755314010975
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pwr:ElectricPowerInfrastructureServices▄▆█▁▇▇█▅▅12816017592161162179146140NANANANA
 us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems,us-gaap:StatementBusinessSegments us-gaap:OperatingSegments,pwr:PipelineAndIndustrialInfrastructureServices▂▅█▄▃▄▆▃▁3188132694054964310NANANANA
us-gaap:InterestExpense ▆██▇▆▅▄▄▂▂▂▁▁1418181513119966643
us-gaap:OtherNonoperatingIncomeExpense ▂▄▂▃█▂▁▁▁▂▂▂▂-9170658-9-15-10-11-1-2-10
us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax ▁▇▅▇▇▃▆▅▄▅█▇▇-8221-121518-5010-20-25-12382613
us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest ▂▆█▂▇▅▇▄▂▁▅▄▂5714519169164128168104564513210471
us-gaap:IncomeTaxExpenseBenefit ▅▆▇▆▇█▇▆▅▁▇▆▆162554414371432918-69424022
us-gaap:ProfitLoss ▂▇█▁▇▃▇▄▂▇▅▃▂4112013728121571247438115896448
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:Parent38NA13627120NA1247437NANANANA
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings38NA13627120NA1247437NANANANA
us-gaap:ComprehensiveIncomeNetOfTax ▁█▇▄█▃█▅▃▇█▆▅-4414012343139813554121021289062
us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest ██▁▄▁▁▁▁▁█▁▁▁2201000002000
us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest ▁█▇▄█▃█▅▃▇▇▆▅-4114212444139913554131041289162
us-gaap:NetIncomeLoss ▁▇█38118136NA12056124NANANANANANA
us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic ▂▇█▁▇▃▇▄▂▇▅▃▂3811813627120561247437113896348
us-gaap:NetIncomeLossAttributableToNoncontrollingInterest ██▁▄▁▁▁▁▄█▁▁▁2201000012000
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:Assets ▇▇█▆▅▄▄▄▃▃▃▁▁8228833188658021765270757191679066536480664057535543
us-gaap:Liabilities ▇▆█▆▅▄▄▃▃▂▃▁▁4433427749554245392734703366309630062684291022442144
us-gaap:LiabilitiesAndStockholdersEquity ▇▇█▆▅▄▄▄▃▃▃▁▁8228833188658021765270757191679066536480664057535543
us-gaap:StockholdersEquity ▅█▆▅▄▃▆▄▄▅▅▂▁3790405039073774372336043822369036433791372735063396
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:AssetsCurrent ▆▆█▆▅▄▄▃▃▃▃▂▁3758383043013751355433263378307429572869294826172474
us-gaap:CashAndCashEquivalentsAtCarryingValue █▃▁▁▁▁▂▂▂▂▁▂▂377164807385781131201011389199106
 us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:CashAndCashEquivalents pwr:CashNotHeldByJointVentures█▃▁▁▁▁36815872657369NANANA121NANANA
 us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:CashAndCashEquivalents pwr:DomesticBankAccounts█▃▂▂▂▂▂▂▂▂▁▁▁3501305552576279797883253117
us-gaap:AccountsReceivableNetCurrent ▅▆█▆▅▄▄▃▃▃▃▁▁2593274731882632258023542291210820881985198016141589
us-gaap:InventoryNet ▁▂▃▃▅█▆▅▆▅▅▆▆505567688110794859480869489
us-gaap:PrepaidExpenseAndOtherAssetsCurrent ▂▆█▇▅▄▄▄▃▂▂▃▁168261313294234208198208173168147178132
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
 us-gaap:PropertyPlantAndEquipmentNet us-gaap:StatementGeographical us-gaap:NonUs▁█291314NANANA304NANANA330NANANA
us-gaap:Goodwill ███▆▆▆▆▆▆▅▇▁▁2006202220021932192718991912189719021868193716161608
 us-gaap:Goodwill us-gaap:StatementBusinessSegments pwr:ElectricPowerInfrastructureServices▆█▆▅▄▁135213651349134213381313NANANA1272NANANA
 us-gaap:Goodwill us-gaap:StatementBusinessSegments pwr:PipelineAndIndustrialInfrastructureServices███▁▁▁653657652589588586NANANA596NANANA
us-gaap:IntangibleAssetsNetExcludingGoodwill ▇▇█▃▄▄▄▃▃▃▄▁▁395413431264276280284261270263275184181
us-gaap:FiniteLivedIntangibleAssetsNet ▇▇█▃▄▄▄▃▄▃▄▁▁392410428261273277281258270263275184181
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:CustomerRelationships▇▇█▃▃▃▃▃▃▃▃▁▁303318334181185194195175184190199133130
 us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass us-gaap:TradeNames▇██▆▆▆▆▆▇▅▆▁▁64676758595961606257584041
us-gaap:OtherAssetsNoncurrent ▇▇██▅▅▄▃▃▃▃▂▁392393449433292293265230221189223145116
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:LiabilitiesCurrent ▆▇█▅▄▄▅▄▃▂▃▁▁2115226323571906177818061816169015491492159212861264
us-gaap:DebtCurrent ███▆▅▇▃▂▁▁▁▁▁737475524465221521213
us-gaap:LongTermDebtCurrent ███▄▄▄▁▁▁▁▁▁▁7068683433322221213
us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent ▅▆█▄▄▅▅▃▂▂▄▁▁13601489164812891238131413401178104010571214969995
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:MinorityInterest █▆▁▁▁▁▁▃▆█▃▃▃4311111234222
 us-gaap:MinorityInterest pwr:InvestmentsByConsolidatedAndNonconsolidatedEntities us-gaap:VariableInterestEntityPrimaryBeneficiary█▁43NANANANANANANANANANANA
us-gaap:OtherLiabilitiesNoncurrent ▃▃▃▅▆█▇▆▇▅▅▁▁309311310353357404388369377342345267262
 us-gaap:OtherLiabilitiesNoncurrent us-gaap:LossContingenciesByNatureOfContingency pwr:EmployersLiabilityWorkersCompensationAutoLiabilityGeneralLiabilityAndGroupHealthCareClaims█▁217212NANANA210NANANANANANANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:StockholdersEquity ▅█▆▅▄▃▆▄▄▅▅▂▁3790405039073774372336043822369036433791372735063396
us-gaap:RetainedEarningsAccumulatedDeficit ██▇▆▆▅▅▄▃▃▂▁▁2881285427432612259124772425230122262191207719881924
us-gaap:TreasuryStockValue █▆▆▆▆▆▄▃▃▁▁▁▁80658658658658555432129627685353534
us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax ▁▅▄▅▄▃▆▅▆▇█▆▅-324-241-264-251-267-286-237-248-228-203-192-231-257
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄█▃▁▁▃▂▄▂▄▄22762691-108-821373915625197173NANA
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇█▂▇▆▇▆▇▇█▁-89-10-391-68-147-80-136-93-91-6-451NANA
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▁█▇▇▅▆▅▆▄█73-531307165236-8990-4426-142270NANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInOperatingActivities ▄█▃▁▁▃▂▄▂▄▄22762691-108-821373915625197173NANA
us-gaap:NetIncomeLoss ▁▇█38118136NA12056124NANANANANANA
us-gaap:ProfitLoss ▂▇█▁▇▃▇▄▂▇▅▃▂4112013728121571247438115896448
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:Parent38NA13627120NA1247437NANANANA
 us-gaap:ProfitLoss us-gaap:StatementEquityComponents us-gaap:RetainedEarnings38NA13627120NA1247437NANANANA
us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet ▂▂▂█▂▂▂▂▂▁▂▁▁5041235328-2-56-12-7
us-gaap:IncreaseDecreaseInInventories ▆▄▆▄▁█▇▄█▅▄▆▆4-8-1-13-28148-813-5-1331
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInInvestingActivities ▇█▂▇▆▇▆▇▇█▁-89-10-391-68-147-80-136-93-91-6-451NANA
us-gaap:PaymentsToAcquirePropertyPlantAndEquipment ▅▂▅▆▅▆▇█▅▇▄▃▁68546672687074816676625847
us-gaap:PaymentsToAcquireInvestments ▂▂▁▁▇▇▁▁▁▂█58103734000340NANA
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
us-gaap:NetCashProvidedByUsedInFinancingActivities ▆▁█▇▇▅▆▅▆▄█73-531307165236-8990-4426-142270NANA
us-gaap:PaymentsForRepurchaseOfCommonStock ▇▁▁▁▂█▂▁▆▃▁▁▁20000019226261517350000
  2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31

Common Stock Value

Common Stock Par Or Stated Value Per Share

Shares Outstanding

us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:SharesOutstanding

pwr:CommonStockClassUndefined, us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value137142142142142141148149149153144152
Percentage of SharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pwr:ExchangeableShares, us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value000000000066
Percentage of SharesOutstanding0.00.00.00.00.00.30.30.30.30.34.54.5

Shares Issued

Common Stock Shares Issued

us-gaap:StatementClassOfStock

us-gaap:CommonStockSharesIssued

pwr:CommonStockClassUndefined



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value161159159159159157155
Percentage of CommonStockSharesIssued100.0100.0100.0100.0100.0100.0100.0

pwr:ExchangeableShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-31
Value000000000033667
Percentage of CommonStockSharesIssued0.00.00.00.00.00.30.00.00.00.30.00.00.00.00.0

Common Stock Shares Outstanding

us-gaap:StatementClassOfStock

us-gaap:CommonStockSharesOutstanding

pwr:CommonStockClassUndefined



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value137142142142142141153
Percentage of CommonStockSharesOutstanding100.0100.0100.0100.0100.0100.0100.0

pwr:ExchangeableShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312015-12-312014-12-31
Value000000000034667
Percentage of CommonStockSharesOutstanding0.00.00.00.00.00.30.00.00.00.30.00.00.00.00.0

Common Stock Shares Authorized

Weighted Average Number Of Diluted Shares Outstanding

us-gaap:WeightedAverageNumberOfDilutedSharesOutstanding



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value146147147146153154157158156155155156162188213215219219219214214213213213211210215214211211210
Percentage of WeightedAverageNumberOfDilutedSharesOutstanding100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Weighted Average Number Of Shares Outstanding Basic

us-gaap:WeightedAverageNumberOfSharesOutstandingBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-09-302015-06-302015-03-312014-09-302014-06-302014-03-312013-09-302013-06-302013-03-312012-09-302012-06-302012-03-312011-09-302011-06-302011-03-312010-09-302010-06-302010-03-31
Value144145145145152153156157155155155156162188213215219219219214214213213212211210214214209209208
Percentage of WeightedAverageNumberOfSharesOutstandingBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Basic

us-gaap:EarningsPerShareBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.270.80999999999999980.930.190.830.37999999999999990.820.490.240.730.570.410.560.480.459999999999999960.450.310.220.320.250.15-0.080.160.30.160.11
Percentage of EarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Earnings Per Share Diluted

us-gaap:EarningsPerShareDiluted



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-312016-09-302012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0.260.80.920.190.820.37999999999999990.810.480.240.720.560.410.560.480.459999999999999960.450.310.220.320.250.15-0.080.160.30.160.11
Percentage of EarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Income Loss From Continuing Operations Per Basic Share

Income Loss From Continuing Operations Per Diluted Share

Revenue From Contract With Customer Excluding Assessed Tax

us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value2764311233522839280731122985265624172478260922002178
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, pwr:ElectricPowerInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value176718471876173416641659161715701568
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.959.356.061.159.353.354.259.164.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax63.959.356.061.159.353.354.259.164.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments pwr:ElectricPowerInfrastructureServices100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingSegments, pwr:PipelineAndIndustrialInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value9971265147611041143145313671086849
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.140.744.038.940.746.745.840.935.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax36.140.744.038.940.746.745.840.935.1
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments pwr:PipelineAndIndustrialInfrastructureServices100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, srt:LatinAmerica, pwr:ElectricPowerInfrastructureServices



Period End2020-03-312019-03-31
Value427
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.21.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.21.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments srt:LatinAmerica pwr:ElectricPowerInfrastructureServices100.0100.0

us-gaap:ContractWithCustomerBasisOfPricing

pwr:UnitPriceContracts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value974103512411020895111410821018613
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.333.337.035.931.935.836.338.325.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax35.333.337.035.931.935.836.338.325.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pwr:UnitPriceContracts100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FixedPriceContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1101170712387159531337123910321225
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.854.836.925.234.043.041.538.950.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax39.854.836.925.234.043.041.538.950.7
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:FixedPriceContract100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:TimeAndMaterialsContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value6883698721103958660662605579
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.911.926.038.934.121.222.222.824.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax24.911.926.038.934.121.222.222.824.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:TimeAndMaterialsContract100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementGeographical

country:AU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value51535636416975113119
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.71.71.31.52.22.54.34.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.81.71.71.31.52.22.54.34.9
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:AU100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:CA



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value384407342202485608522315538
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.913.110.27.117.319.517.511.922.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax13.913.110.27.117.319.517.511.922.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:CA100.0100.0100.0100.0100.0100.0100.0100.0100.0

country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value226825552872256122002351231721931712
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax82.182.185.790.278.475.677.682.670.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax82.182.185.790.278.475.677.682.670.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax country:US100.0100.0100.0100.0100.0100.0100.0100.0100.0

pwr:LatinAmericaandOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value609781387983693347
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.23.12.41.32.82.72.31.32.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.23.12.41.32.82.72.31.32.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax pwr:LatinAmericaandOther100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:NonUs



Period End2020-03-312019-03-31
Value496606
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.921.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax17.921.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NonUs100.0100.0

Revenues

Cost Of Goods And Services Sold

us-gaap:CostOfGoodsAndServicesSold



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value24312669287925192443269225592322211621552258
Percentage of CostOfGoodsAndServicesSold100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax88.085.885.988.787.086.585.787.587.587.086.6

Cost Of Services

Gross Profit

us-gaap:GrossProfit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value33244347331936341942533330132235030226630730220020322323522725232735228127230227324123828628023519520019415470159189156129
Percentage of GrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax12.014.214.111.313.013.514.312.512.513.013.413.712.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Selling General And Administrative Expense

us-gaap:SellingGeneralAndAdministrativeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value230255245223231212224206215206201185184173164156158151145149150208200139173143124119113891241141069992899194828281
Percentage of SellingGeneralAndAdministrativeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.38.27.37.98.36.87.57.88.98.37.78.48.50.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Operating Income Loss

us-gaap:OperatingIncomeLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value8014720978119149192123755314010975117130353738068931081421339014914111711912814511179929357-2654946442
Percentage of OperatingIncomeLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.94.76.22.84.34.86.54.63.12.25.45.03.40.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-79-102-98-84-82-66-82-66-75-120-68
Percentage of OperatingIncomeLoss-98.2-69.5-47.1-107.3-69.3-44.8-42.9-54.3-100.7-225.6-48.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-2.9-3.3-2.9-3.0-3.0-2.2-2.8-2.5-3.1-4.9-2.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:CorporateNonSegment0.00.00.00.00.00.00.00.00.00.00.0

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, pwr:ElectricPowerInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value12816017592161162179146140
Percentage of OperatingIncomeLoss159.5109.283.9118.3135.3108.593.1118.7187.3
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax4.75.25.23.35.85.26.05.55.8
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments pwr:ElectricPowerInfrastructureServices7.38.79.45.49.79.811.19.39.0

us-gaap:OperatingSegments, pwr:PipelineAndIndustrialInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3188132694054964310
Percentage of OperatingIncomeLoss38.760.363.289.034.136.349.935.613.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.12.93.92.51.41.73.21.60.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments pwr:PipelineAndIndustrialInfrastructureServices3.17.09.06.33.63.77.04.01.2

us-gaap:ConsolidationItems, us-gaap:StatementGeographical, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, srt:LatinAmerica, pwr:ElectricPowerInfrastructureServices



Period End2020-03-312019-03-31
Value-160
Percentage of OperatingIncomeLoss-20.2-0.5
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.6-0.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:OperatingSegments srt:LatinAmerica pwr:ElectricPowerInfrastructureServices-346.8-2.2

Interest Expense

us-gaap:InterestExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value14181815131199666433333221111101000100000000012
Percentage of InterestExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.50.60.50.60.50.40.30.30.30.30.20.20.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Nonoperating Income Expense

us-gaap:OtherNonoperatingIncomeExpense



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-9170658-9-15-10-11-1-2-1000000-10000-100000-110000000000
Percentage of OtherNonoperatingIncomeExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-0.40.60.00.22.1-0.3-0.5-0.4-0.5-0.0-0.1-0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax

us-gaap:OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-8221-121518-5010-20-25-12382613-28-11360-29-6714-88-47-5031-17-2813-25-13-522-14117-28-2
Percentage of OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.00.7-0.40.60.7-1.60.4-0.8-1.0-0.51.51.20.60.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations

Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest

us-gaap:IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value5714519169164128168104564513210471113128313407867921071421319126214011611812814697786992
Percentage of IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.14.75.72.45.94.15.63.92.31.95.14.83.30.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest

Income Loss From Continuing Operations Before Income Taxes Domestic

Income Loss From Continuing Operations Before Income Taxes Foreign

Income Tax Expense Benefit

us-gaap:IncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value162554414371432918-69424022245414132323134364246339142424143454029213723-1020312216
Percentage of IncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.60.81.61.41.62.31.41.10.7-2.81.61.81.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value411201372812157124743811589644888741620-421849587010085581719874761021006949705534-1634633324
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.53.94.11.04.31.94.22.81.64.73.42.92.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2010000
Percentage of ProfitLoss6.80.73.90.50.30.52.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.0

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value38136271201247437
Percentage of ProfitLoss93.299.396.199.599.799.597.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.44.11.04.34.22.81.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value38136271201247437
Percentage of ProfitLoss93.299.396.199.599.799.597.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.44.11.04.34.22.81.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax

us-gaap:ComprehensiveIncomeNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-441401234313981355412102128906258611981-3414861-351744112361401064558931185057722329-6426430
Percentage of ComprehensiveIncomeNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.64.53.71.55.00.34.52.00.54.14.94.12.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value2201000002000000002344544454434444321000
Percentage of ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest

us-gaap:ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-30
Value-411421244413991355413104128916259621981-3415164-302149116401451114963961235561772632-5426530
Percentage of ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-1.54.63.71.65.00.34.52.10.64.24.94.12.90.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value3811813612056124
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.43.84.14.31.84.2

Net Income Loss Available To Common Stockholders Basic

us-gaap:NetIncomeLossAvailableToCommonStockholdersBasic



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value381181362712056124743711389634887731620-521646536694815416692707298966545665131-1733623223
Percentage of NetIncomeLossAvailableToCommonStockholdersBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.43.84.11.04.31.84.22.81.64.63.42.92.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss Available To Common Stockholders Diluted

Net Income Loss Attributable To Noncontrolling Interest

us-gaap:NetIncomeLossAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value22010000120000000023445444544344443210000
Percentage of NetIncomeLossAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.10.00.00.00.00.00.00.00.10.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Assets

us-gaap:Assets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value822883318865802176527075719167906653648066405753554353545476529752955213537361306140631262295909582657935494518751545140525548974755469944634292432443414116
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Liabilities

us-gaap:Liabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value443342774955424539273470336630963006268429102244214420112199209321222125216919201830178617401507150915511470130013231368158513511284130911609899649741006
Percentage of Liabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets53.951.355.952.951.349.046.845.645.241.443.839.038.737.640.239.540.140.840.431.329.828.327.925.525.926.826.825.125.726.630.227.627.027.926.023.122.322.424.4

Liabilities And Stockholders Equity

us-gaap:LiabilitiesAndStockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value822883318865802176527075719167906653648066405753554353545476529752955213537361306140631262295909582657935494518751545140525548974755469944634292432443414116
Percentage of LiabilitiesAndStockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value379040503907377437233604382236903643379137273506339633393273320031703085318941964297451444714385430542344015388238263766366235363461338132943298335733653109
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets46.148.644.147.148.750.953.254.454.858.556.161.061.362.459.860.459.959.259.468.470.071.571.874.273.973.173.174.874.273.369.772.272.872.073.876.877.677.575.5

Assets Current

us-gaap:AssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value375838304301375135543326337830742957286929482617247422882405224422482277236223152387255325362242221423132137217621852201213618241770176515761476156215961582
Percentage of AssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets45.746.048.546.846.447.047.045.344.444.344.445.544.642.743.942.442.543.744.037.838.940.540.738.038.039.938.942.042.442.840.737.337.237.635.334.436.136.838.4

Cash And Cash Equivalents At Carrying Value

us-gaap:CashAndCashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-312009-12-312008-12-312007-12-31
Value3771648073857811312010113891991061121171621551284965135190144188273488309363366394128172177315257380503539441519659699437407
Percentage of CashAndCashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.62.00.90.91.11.11.61.81.52.11.41.71.92.12.13.12.92.50.91.12.23.02.33.24.78.45.67.07.17.72.43.53.76.75.88.911.612.40.00.00.017.00.00.0

us-gaap:CashAndCashEquivalents

pwr:CashNotHeldByJointVentures



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value36815872657369121
Percentage of CashAndCashEquivalentsAtCarryingValue97.696.090.089.285.588.688.0
Percentage of Assets4.51.90.80.81.01.01.9
Percentage of Assets pwr:CashNotHeldByJointVentures0.00.00.00.00.00.00.0

pwr:DomesticBankAccounts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value3501305552576279797883253117199131816192910312743236
Percentage of CashAndCashEquivalentsAtCarryingValue92.979.469.471.567.679.469.966.176.760.127.331.516.417.48.08.311.812.540.044.576.666.830.448.4
Percentage of Assets4.31.60.60.70.80.91.11.21.21.30.40.50.30.40.20.30.30.30.40.51.72.00.74.1
Percentage of Assets pwr:DomesticBankAccounts0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pwr:DomesticJointVentures



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value967712811111010101010
Percentage of CashAndCashEquivalentsAtCarryingValue2.44.09.810.814.410.910.59.310.47.210.910.58.9
Percentage of Assets0.10.10.10.10.20.10.20.20.20.20.20.20.2
Percentage of Assets pwr:DomesticJointVentures0.00.00.00.00.00.00.00.00.00.00.00.00.0

pwr:ForeignBankAccounts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302013-12-31
Value263424202716344023556668899210814813711229363163100252
Percentage of CashAndCashEquivalentsAtCarryingValue7.120.630.628.532.420.630.133.923.339.972.768.583.682.692.091.788.287.560.055.523.433.269.651.6
Percentage of Assets0.30.40.30.30.40.20.50.60.40.91.01.21.61.72.02.82.62.20.50.60.51.01.64.4
Percentage of Assets pwr:ForeignBankAccounts0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

pwr:ForeignJointVentures



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value0000006
Percentage of CashAndCashEquivalentsAtCarryingValue0.00.00.20.00.00.64.8
Percentage of Assets0.00.00.00.00.00.00.1
Percentage of Assets pwr:ForeignJointVentures0.00.00.00.00.00.00.0

pwr:InvestmentsInJointVentures



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302016-12-31
Value967712812111116341311
Percentage of CashAndCashEquivalentsAtCarryingValue2.44.010.010.814.511.410.99.611.112.137.113.510.3
Percentage of Assets0.10.10.10.10.20.10.20.20.20.30.50.20.2
Percentage of Assets pwr:InvestmentsInJointVentures0.00.00.00.00.00.00.00.00.00.00.00.00.0

Accounts Receivable Net Current

us-gaap:AccountsReceivableNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value25932747318826322580235422912108208819851980161415891500156513841493162117001626164218121873158915011439143412821283132814411138111410661008813767766688
Percentage of AccountsReceivableNetCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets31.533.036.032.833.733.331.931.031.430.629.828.128.728.028.626.128.231.131.626.526.828.730.126.925.824.826.124.724.925.827.423.323.422.722.618.917.717.716.7

Inventory Net

us-gaap:InventoryNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value5055676881107948594808694898889747275645545383940353135403738555772717462535133
Percentage of InventoryNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.60.70.80.91.11.51.31.31.41.21.31.61.61.71.61.41.41.41.20.90.70.60.60.70.60.60.60.80.70.71.11.21.51.51.71.41.21.20.8

Other Assets Current

Prepaid Expense And Other Assets Current

us-gaap:PrepaidExpenseAndOtherAssetsCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312014-12-31
Value168261313294234208198208173168147178132114135156143134161
Percentage of PrepaidExpenseAndOtherAssetsCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets2.03.13.53.73.12.92.83.12.62.62.23.12.42.12.52.92.72.62.6

Land

Machinery And Equipment Gross

Property Plant And Equipment Gross

Accumulated Depreciation Depletion And Amortization Property Plant And Equipment

Property Plant And Equipment Net

us-gaap:StatementGeographical

us-gaap:PropertyPlantAndEquipmentNet

us-gaap:NonUs



Period End2020-03-312019-12-312018-12-312017-12-312016-12-31
Value291314304330320
Percentage of PropertyPlantAndEquipmentNet100.0100.0100.0100.0100.0
Percentage of Assets3.53.84.35.16.0
Percentage of Assets us-gaap:NonUs0.00.00.00.00.0

Goodwill

us-gaap:Goodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value200620222002193219271899191218971902186819371616160816031612159515951552159615981922193118801842183217801650153015351537167016641646160115861563156415611449
Percentage of Goodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets24.424.322.624.125.226.926.627.928.628.829.228.129.029.929.430.130.129.829.726.131.330.630.231.231.430.730.029.529.829.931.834.034.634.135.536.436.236.035.2

us-gaap:StatementBusinessSegments

pwr:ElectricPowerInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-31
Value135213651349134213381313127212531226
Percentage of Goodwill67.467.567.469.569.569.168.178.279.0
Percentage of Assets16.416.415.216.717.518.619.623.423.5
Percentage of Assets pwr:ElectricPowerInfrastructureServices0.00.00.00.00.00.00.00.00.0

pwr:PipelineAndIndustrialInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-31
Value653657652589588586596349326
Percentage of Goodwill32.632.532.630.530.530.931.921.821.0
Percentage of Assets7.97.97.47.47.78.39.26.56.3
Percentage of Assets pwr:PipelineAndIndustrialInfrastructureServices0.00.00.00.00.00.00.00.00.0

Intangible Assets Net Excluding Goodwill

us-gaap:IntangibleAssetsNetExcludingGoodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value395413431264276280284261270263275184181187197203211205225234252260229214219207190171178183199206209207199186189194184
Percentage of IntangibleAssetsNetExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.85.04.93.33.64.04.03.94.14.14.13.23.33.53.63.84.03.94.23.84.14.13.73.63.83.63.53.33.53.63.84.24.44.44.54.34.44.54.5

Finite Lived Intangible Assets Net

us-gaap:FiniteLivedIntangibleAssetsNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value392410428261273277281258270263275184181187197203211205225234247256224209215203186167174179194201204202195181
Percentage of FiniteLivedIntangibleAssetsNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.84.94.83.33.63.93.93.84.14.14.13.23.33.53.63.84.03.94.23.84.04.13.63.53.73.53.43.23.43.53.74.14.34.34.44.2

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

pwr:Curriculum



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value9998888880
Percentage of FiniteLivedIntangibleAssetsNet2.42.22.23.13.13.13.03.33.30.0
Percentage of Assets0.10.10.10.10.10.10.10.10.10.0
Percentage of Assets pwr:Curriculum0.00.00.00.00.00.00.00.00.00.0

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value303318334181185194195175184190199133130133140145150145161167177183159146147139127115119122131132134133130120
Percentage of FiniteLivedIntangibleAssetsNet77.377.678.069.568.070.169.667.868.072.272.472.571.571.571.271.671.271.171.671.571.971.571.169.768.668.768.369.168.868.467.565.965.666.067.066.4
Percentage of Assets3.73.83.82.32.42.72.72.62.82.93.02.32.32.52.62.72.82.83.02.72.92.92.62.52.52.42.32.22.32.42.52.72.82.82.92.8
Percentage of Assets us-gaap:CustomerRelationships0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:DevelopedTechnologyRights



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1222733444556677889910101011111111121213131213101011
Percentage of FiniteLivedIntangibleAssetsNet0.40.50.51.02.71.21.31.61.71.92.03.13.43.63.63.83.94.24.14.24.14.14.75.35.45.86.37.37.47.57.26.46.55.25.66.1
Percentage of Assets0.00.00.00.00.10.00.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.20.20.20.20.20.20.20.20.30.30.30.30.20.20.3
Percentage of Assets us-gaap:DevelopedTechnologyRights0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:NoncompeteAgreements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1010111010101089101033344455556655655667899108
Percentage of FiniteLivedIntangibleAssetsNet2.62.52.73.84.03.83.83.43.53.84.01.91.82.02.12.22.32.52.62.52.42.53.02.62.83.02.83.23.53.74.14.44.64.85.44.8
Percentage of Assets0.10.10.10.10.10.10.10.10.10.20.20.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.10.20.20.20.20.20.2
Percentage of Assets us-gaap:NoncompeteAgreements0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:OrderOrProductionBacklog



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value233010101000012233571012791299566111719201515
Percentage of FiniteLivedIntangibleAssetsNet0.70.80.80.30.50.40.60.30.40.20.30.40.50.61.31.21.71.92.63.34.35.13.24.55.74.75.23.23.63.95.98.59.310.27.98.5
Percentage of Assets0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.10.10.10.10.20.20.10.20.20.20.20.10.10.10.20.30.40.40.30.4
Percentage of Assets us-gaap:OrderOrProductionBacklog0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:TradeNames



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value646767585959616062575840414143434441424342434037373632282929292928272725
Percentage of FiniteLivedIntangibleAssetsNet16.516.415.822.321.721.521.823.623.121.921.422.122.722.421.821.320.920.319.118.517.316.918.117.817.517.817.517.116.816.515.414.913.913.714.114.2
Percentage of Assets0.80.80.80.70.80.80.90.90.90.90.90.70.70.80.80.80.80.80.80.70.70.70.70.60.60.60.60.60.60.60.60.60.60.60.60.6
Percentage of Assets us-gaap:TradeNames0.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

Deferred Tax Assets Liabilities Net

Other Assets Noncurrent

us-gaap:OtherAssetsNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value3923934494332922932652302211892231451161019593867662999885195297290285363205182171191185143153144127988845
Percentage of OtherAssetsNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets4.84.75.15.43.84.13.73.43.32.93.42.52.11.91.71.81.61.51.21.61.61.43.15.05.04.96.64.03.53.33.73.83.03.33.23.02.32.01.1

Liabilities Current

us-gaap:LiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value211522632357190617781806181616901549149215921286126412051245120812351203134011791124113711289679821043964800829881925783762781651503482500495
Percentage of LiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets25.727.226.623.823.225.525.324.923.323.024.022.422.822.522.822.823.323.124.919.218.318.018.116.416.918.017.615.416.117.117.616.016.016.614.611.711.211.512.0

Debt Current

us-gaap:DebtCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value7374755244652215212137554722981
Percentage of DebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.90.90.70.60.90.30.20.00.00.00.00.10.10.10.10.10.10.00.00.20.10.0

Notes Payable Current

Long Term Debt Current

us-gaap:LongTermDebtCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-31
Value70686834333222212134554222531
Percentage of LongTermDebtCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.90.80.80.40.40.50.00.00.00.00.00.00.10.10.10.10.10.00.00.00.10.10.0

Accounts Payable And Accrued Liabilities Current

us-gaap:AccountsPayableAndAccruedLiabilitiesCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value13601489164812891238131413401178104010571214969995922928811791782938875874877884734772802757611666707771635580618527410394415422
Percentage of AccountsPayableAndAccruedLiabilitiesCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets16.517.918.616.116.218.618.617.415.616.318.316.918.017.217.015.314.915.017.514.314.213.914.212.413.313.813.811.812.913.814.713.012.213.211.89.69.19.610.3

Other Accrued Liabilities Current

Taxes Payable Current

Accrued Income Taxes Current

Long Term Debt

Long Term Debt Noncurrent

Deferred Tax Liabilities Noncurrent

Minority Interest

us-gaap:MinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value4311111234222322221413131117151078545799784211
Percentage of MinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets0.10.00.00.00.00.00.00.00.10.10.00.00.00.10.00.10.10.00.30.20.20.20.30.30.20.10.20.10.10.10.10.20.20.20.20.10.10.00.0

pwr:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value43
Percentage of MinorityInterest100.398.9
Percentage of Assets0.10.0
Percentage of Assets us-gaap:VariableInterestEntityPrimaryBeneficiary0.00.0

Other Liabilities Noncurrent

us-gaap:OtherLiabilitiesNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value309311310353357404388369377342345267262259287284276260254249290276278283273264265266266262284285290295277274267261216
Percentage of OtherLiabilitiesNoncurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets3.83.73.54.44.75.75.45.45.75.35.24.64.74.95.25.45.25.04.74.14.74.44.54.84.74.64.85.15.25.15.45.86.16.36.26.46.26.05.3

us-gaap:LossContingenciesByNatureOfContingency

pwr:EmployersLiabilityWorkersCompensationAutoLiabilityGeneralLiabilityAndGroupHealthCareClaims



Period End2020-03-312019-12-312018-12-31
Value217212210
Percentage of OtherLiabilitiesNoncurrent70.268.451.9
Percentage of Assets2.62.63.0
Percentage of Assets pwr:EmployersLiabilityWorkersCompensationAutoLiabilityGeneralLiabilityAndGroupHealthCareClaims0.00.00.0

Stockholders Equity

us-gaap:StockholdersEquity



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value379040503907377437233604382236903643379137273506339633393273320031703085318941964297451444714385430542344015388238263766366235363461338132943298335733653109
Percentage of StockholdersEquity100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets46.148.644.147.148.750.953.254.454.858.556.161.061.362.459.860.459.959.259.468.470.071.571.874.273.973.173.174.874.273.369.772.272.872.073.876.877.677.575.5

Common Stock Value

Retained Earnings Accumulated Deficit

us-gaap:RetainedEarningsAccumulatedDeficit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value2881285427432612259124772425230122262191207719881924187617881714169816771682146614201366130012051124107090381074066856947240736129524321122975
Percentage of RetainedEarningsAccumulatedDeficit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets35.034.330.932.633.935.033.733.933.533.831.334.634.735.032.732.432.132.231.323.923.121.720.920.419.318.516.415.614.413.010.89.78.67.76.65.74.95.31.8

Treasury Stock Value

us-gaap:TreasuryStockValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value806586586586585554321296276853535341419601960180917951718692520321273272226215215215212203202202202196196141464035
Percentage of TreasuryStockValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets9.87.06.67.37.77.84.54.44.11.30.50.60.60.335.837.034.234.432.011.38.55.14.44.63.93.73.94.14.14.03.94.14.34.24.43.31.10.90.9

Accumulated Other Comprehensive Income Loss Net Of Tax

us-gaap:AccumulatedOtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value-324-241-264-251-267-286-237-248-228-203-192-231-257-271-242-231-234-294-264-197-212-123-73-23-55-37-11-2401419-2120-52325143
Percentage of AccumulatedOtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of Assets-3.9-2.9-3.0-3.1-3.5-4.0-3.3-3.7-3.4-3.1-2.9-4.0-4.7-5.1-4.4-4.4-4.4-5.7-4.9-3.2-3.5-2.0-1.2-0.4-0.9-0.6-0.2-0.50.00.30.4-0.10.30.0-0.10.50.60.30.1

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value22762691-108-821373915625197173-5986-601254056-4261-54283
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.220.12.7-3.8-2.94.41.35.91.18.06.70.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-89-10-391-68-147-80-136-93-91-6-451-70-119-80-64-96-85-34-161-24-24-42
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.2-0.3-11.7-2.4-5.2-2.6-4.6-3.5-3.8-0.3-17.30.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value73-531307165236-8990-4426-14227079320-5-60-95200-143-1
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.7-17.19.25.88.4-2.93.0-1.71.1-5.710.40.00.00.00.00.00.00.00.00.00.00.0

Net Cash Provided By Used In Operating Activities

us-gaap:NetCashProvidedByUsedInOperatingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value22762691-108-821373915625197173-5986-601254056-4261-54283
Percentage of NetCashProvidedByUsedInOperatingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax8.220.12.7-3.8-2.94.41.35.91.18.06.70.00.00.00.00.00.00.00.00.00.00.0

Net Income Loss

us-gaap:NetIncomeLoss



Period End2020-03-312019-12-312019-09-302019-03-312018-12-312018-09-30
Value3811813612056124
Percentage of NetIncomeLoss100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.43.84.14.31.84.2

Profit Loss

us-gaap:ProfitLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value411201372812157124743811589644888741620-421849587010085581719874761021006949705534-1634633324
Percentage of ProfitLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.53.94.11.04.31.94.22.81.64.73.42.92.20.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value2010000
Percentage of ProfitLoss6.80.73.90.50.30.52.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax0.10.00.00.00.00.00.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:NoncontrollingInterest0.00.00.00.00.00.00.0

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value38136271201247437
Percentage of ProfitLoss93.299.396.199.599.799.597.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.44.11.04.34.22.81.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:Parent0.00.00.00.00.00.00.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value38136271201247437
Percentage of ProfitLoss93.299.396.199.599.799.597.4
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax1.44.11.04.34.22.81.6
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:RetainedEarnings0.00.00.00.00.00.00.0

Increase Decrease In Other Operating Capital Net

us-gaap:IncreaseDecreaseInOtherOperatingCapitalNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value5041235328-2-56-12-7
Percentage of IncreaseDecreaseInOtherOperatingCapitalNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Increase Decrease In Inventories

us-gaap:IncreaseDecreaseInInventories



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4-8-1-13-28148-813-5-13310122-410993-1-141-3-530-8-2-14-1-211914570
Percentage of IncreaseDecreaseInInventories100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Investing Activities

us-gaap:NetCashProvidedByUsedInInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-89-10-391-68-147-80-136-93-91-6-451-70-119-80-64-96-85-34-161-24-24-42
Percentage of NetCashProvidedByUsedInInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax-3.2-0.3-11.7-2.4-5.2-2.6-4.6-3.5-3.8-0.3-17.30.00.00.00.00.00.00.00.00.00.00.0

Payments To Acquire Property Plant And Equipment

us-gaap:PaymentsToAcquirePropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value6854667268707481667662584768356047414762667479757150518157497149353943523735313743
Percentage of PaymentsToAcquirePropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Payments To Acquire Investments

us-gaap:PaymentsToAcquireInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302013-06-302011-09-30
Value58103734000340364
Percentage of PaymentsToAcquireInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Net Cash Provided By Used In Financing Activities

us-gaap:NetCashProvidedByUsedInFinancingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value73-531307165236-8990-4426-14227079320-5-60-95200-143-1
Percentage of NetCashProvidedByUsedInFinancingActivities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0
Percentage of RevenueFromContractWithCustomerExcludingAssessedTax2.7-17.19.25.88.4-2.93.0-1.71.1-5.710.40.00.00.00.00.00.00.00.00.00.00.0

Payments Of Dividends

Payments Of Dividends

Payments For Repurchase Of Common Stock

us-gaap:PaymentsForRepurchaseOfCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302011-09-302011-06-30
Value20000019226261517350000761175172182480455594
Percentage of PaymentsForRepurchaseOfCommonStock100.00.00.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0100.00.0100.0100.0100.0

Debt Instrument Interest Rate Stated Percentage

Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod

pwr:PerformanceStockUnitsPSUs



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value400000.00.0100000.00.0300000.0-100000.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod100.00.0100.00.0100.0100.00.0

pwr:RestrictedStockUnitsToBeSettledInCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value10001000100010001
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod475.00.0500.00.0500.0-100.00.00.00.00.00.00.00.00.00.00.00.0

Share Based Compensation

us-gaap:ShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value14101314131211131412101111999138999107101087128478654555556
Percentage of ShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

pwr:PerformanceStockUnitsPSUs



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value21111112
Percentage of ShareBasedCompensation19.414.69.613.113.19.510.320.0

pwr:RestrictedStockUnitsToBeSettledInCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value12912121111101011991011
Percentage of ShareBasedCompensation80.585.190.587.086.890.789.480.176.381.090.687.494.4

Deferred Tax Liabilities

Deferred Tax Assets Net

Unrecognized Tax Benefits

Deferred Tax Assets Valuation Allowance

Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions

Operating Lease Right Of Use Asset

us-gaap:OperatingLeaseRightOfUseAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value287284289284285
Percentage of OperatingLeaseRightOfUseAsset100.0100.0100.0100.0100.0

Cash And Cash Equivalents Period Increase Decrease

Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value3811698478898311812410514395102107114128
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Proceeds From Repayments Of Short Term Debt

us-gaap:ProceedsFromRepaymentsOfShortTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-2-1-117-2313712000
Percentage of ProceedsFromRepaymentsOfShortTermDebt100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:AwardType

pwr:AmountInCashReceivedForEachRSUIsEqualToFairValueOfThisNumberOfQuantaCommonStockShares

pwr:RestrictedStockUnitsToBeSettledInCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value1.00.00.00.01.00.0
Percentage of AmountInCashReceivedForEachRSUIsEqualToFairValueOfThisNumberOfQuantaCommonStockShares100.00.00.00.0100.00.0

pwr:AutoLiabilityInsuranceClaimsDeductible



Period End2020-03-312015-12-312015-09-302015-06-302015-03-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1000010100505055505550555
Percentage of AutoLiabilityInsuranceClaimsDeductible100.00.00.00.0100.0100.00.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent



Period End2020-05-01
Value15
Percentage of AutoLiabilityInsuranceClaimsDeductible0.0

pwr:BusinessAcquisitionsProFormaAmortizationOfIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value182218121212121010121210107887108881598811789810991181082314
Percentage of BusinessAcquisitionsProFormaAmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pwr:BusinessAcquisitionsProFormaGrossProfit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value33345349532036441943333330233636933429930730220020322623622725334235428127136227528027722628023519520819617283176206
Percentage of BusinessAcquisitionsProFormaGrossProfit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pwr:BusinessAcquisitionsProFormaNetIncomeLossAttributableToCommonStockNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value3911814426120641347640
Percentage of BusinessAcquisitionsProFormaNetIncomeLossAttributableToCommonStockNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0

pwr:BusinessAcquisitionsProFormaSellingGeneralAndAdministrativeExpenses



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value2312632502252322122262062162112102082071731641561591521461501502132001391741631261331288912411410610293969610288
Percentage of BusinessAcquisitionsProFormaSellingGeneralAndAdministrativeExpenses100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisition

pwr:BusinessCombinationCashConsiderationTransferredOrToBeTransferred

pwr:Acquisitions2020



Period End2020-03-31
Value19
Percentage of BusinessCombinationCashConsiderationTransferredOrToBeTransferred100.0

pwr:ContractWithCustomerCumulativeCatchUpAdjustmentToGrossProfitChangeInEstimate



Period End2020-03-312019-09-302018-09-30
Value-24-29-30
Percentage of ContractWithCustomerCumulativeCatchUpAdjustmentToGrossProfitChangeInEstimate100.0100.0100.0

us-gaap:TypeOfArrangement

pwr:PipelineTransmissionProject



Period End2020-03-31
Value-11
Percentage of ContractWithCustomerCumulativeCatchUpAdjustmentToGrossProfitChangeInEstimate48.1

pwr:EmployersLiabilityInsuranceClaimsDeductible



Period End2020-03-312015-12-312015-09-302015-06-302015-03-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1000000.00.00.00.01000000.01000000.00.00.00.01000000.00.01000000.01000000.01000000.00.01000000.01000000.01000000.00.01000000.01000000.01000000.0
Percentage of EmployersLiabilityInsuranceClaimsDeductible100.00.00.00.0100.0100.00.00.00.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent



Period End2020-05-01
Value5
Percentage of EmployersLiabilityInsuranceClaimsDeductible0.0

us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

pwr:ExchangeableSharesExchangedForCommonStock

pwr:CommonStockClassUndefined, us-gaap:CommonStock



Period End2020-03-312019-03-31
Value36183.0449929.0
Percentage of ExchangeableSharesExchangedForCommonStock100.0100.0

pwr:ExchangeableShares, us-gaap:CommonStock



Period End2020-03-312019-03-31
Value-36183.0-449929.0
Percentage of ExchangeableSharesExchangedForCommonStock-100.0-100.0

us-gaap:Range

pwr:FairValueInputsCustomerAttritionRates

srt:Maximum



Period End2020-03-312019-12-312018-12-31
Value0.410.00.0
Percentage of FairValueInputsCustomerAttritionRates100.00.00.0

srt:Minimum



Period End2020-03-312019-12-312018-12-31
Value0.230.00.0
Percentage of FairValueInputsCustomerAttritionRates56.10.00.0

srt:WeightedAverage



Period End2020-03-31
Value0.29
Percentage of FairValueInputsCustomerAttritionRates70.7

us-gaap:Range

pwr:FairValueInputsRateOfReturn

srt:Maximum



Period End2020-03-312019-12-312018-12-31
Value0.230.00.0
Percentage of FairValueInputsRateOfReturn100.00.00.0

srt:Minimum



Period End2020-03-312019-12-312018-12-31
Value0.20.00.0
Percentage of FairValueInputsRateOfReturn87.00.00.0

srt:WeightedAverage



Period End2020-03-31
Value0.22
Percentage of FairValueInputsRateOfReturn95.7

pwr:GeneralLiabilityInsuranceClaimsDeductible



Period End2020-03-312015-12-312015-09-302015-06-302015-03-312014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1000010100505055505550555
Percentage of GeneralLiabilityInsuranceClaimsDeductible100.00.00.00.0100.0100.00.0100.00.0100.00.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:SubsequentEventType

us-gaap:SubsequentEvent



Period End2020-05-01
Value15
Percentage of GeneralLiabilityInsuranceClaimsDeductible0.0

us-gaap:ConcentrationRiskByType

pwr:NumberOfCustomersRepresentingTenPercentOrMoreOfRevenue

us-gaap:CustomerConcentrationRisk



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.00.01.00.00.00.00.00.0
Percentage of NumberOfCustomersRepresentingTenPercentOrMoreOfRevenue0.00.0100.00.00.00.00.00.0

pwr:NumberOfInternalDivisions



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.00.00.00.02.00.0
Percentage of NumberOfInternalDivisions100.00.00.00.0100.00.0

pwr:NumberOfSharesOfCommonStockReceivedForEachExchangeableShare



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312011-09-302011-06-30
Value1.00.00.00.01.00.01.01.0
Percentage of NumberOfSharesOfCommonStockReceivedForEachExchangeableShare100.00.00.00.0100.00.0100.0100.0

pwr:OtherComprehensiveIncomeLossOtherNetOfTax



Period End2020-03-312019-03-31
Value0.0-16000.0
Percentage of OtherComprehensiveIncomeLossOtherNetOfTax0.0100.0

pwr:OtherComprehensiveIncomeLossOtherTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0-228000.017000.05000.06000.0-677000.00.00.00.0
Percentage of OtherComprehensiveIncomeLossOtherTax0.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:StatementGeographical

pwr:PercentageOfForeignRevenue

country:CA



Period End2020-03-312019-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-31
Value0.770.80.00.830.840.880.0099999999999998980.830.750.84-0.0400000000000000360.80.960.96
Percentage of PercentageOfForeignRevenue100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pwr:PercentageOfTotalRevenues



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value1.00.01.01.01.00.01.01.01.0
Percentage of PercentageOfTotalRevenues100.00.0100.0100.0100.00.0100.0100.0100.0

us-gaap:ContractWithCustomerBasisOfPricing

pwr:UnitPriceContracts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.353-0.00500000000000000440.3710.3590.3190.0060000000000000050.3630.3830.253
Percentage of PercentageOfTotalRevenues35.30.037.135.931.90.036.338.325.3

us-gaap:FixedPriceContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.3980.0579999999999999960.3690.2520.34-0.00100000000000000090.4150.3890.507
Percentage of PercentageOfTotalRevenues39.80.036.925.234.00.041.538.950.7

us-gaap:TimeAndMaterialsContract



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.249-0.052999999999999990.260.3890.341-0.00500000000000000440.2220.2280.24
Percentage of PercentageOfTotalRevenues24.90.026.038.934.10.022.222.824.0

us-gaap:StatementGeographical

country:AU



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0180.00100000000000000090.0170.0130.015-0.0039999999999999970.0250.0430.049
Percentage of PercentageOfTotalRevenues1.80.01.71.31.50.02.54.34.9

country:CA



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.1390.00499999999999999060.1020.0710.1730.00699999999999997850.1750.1190.223
Percentage of PercentageOfTotalRevenues13.90.010.27.117.30.017.511.922.3

country:US



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.821-0.0090000000000000080.8570.9030.784-0.00500000000000000440.7770.8250.708
Percentage of PercentageOfTotalRevenues82.10.085.790.378.40.077.782.570.8

pwr:LatinAmericaandOther



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.0220.00300000000000000270.0240.0130.0280.00200000000000000180.0230.0130.02
Percentage of PercentageOfTotalRevenues2.20.02.41.32.80.02.31.32.0

us-gaap:Range, us-gaap:AwardType

pwr:PerformanceBasedAwardPerformancePercentage

srt:Maximum, pwr:PerformanceStockUnitsPSUs



Period End2020-03-312019-12-312019-09-30
Value2.00.00.0
Percentage of PerformanceBasedAwardPerformancePercentage100.00.00.0

pwr:RevenueFromContractWithCustomerPercentageOfRevenueRecognizedOverTime



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value0.481-0.0080000000000000070.5130.4910.490.0169999999999999040.5860.5490.542
Percentage of RevenueFromContractWithCustomerPercentageOfRevenueRecognizedOverTime100.0100.0100.0100.0100.0100.0100.0100.0100.0

pwr:ShortTermLeaseAndVariableLeaseCost



Period End2020-03-312019-03-31
Value170200
Percentage of ShortTermLeaseAndVariableLeaseCost100.0100.0

us-gaap:AwardType

us-gaap:AllocatedShareBasedCompensationExpense

pwr:RestrictedStockUnitsToBeSettledInCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-31
Value110121111121222110011010010000000
Percentage of AllocatedShareBasedCompensationExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivableWriteOffs



Period End2020-03-312019-03-31
Value292000.0186000.0
Percentage of AllowanceForDoubtfulAccountsReceivableWriteOffs100.0100.0

us-gaap:AmortizationOfFinancingCosts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value589000.0588000.0466000.0408000.0408000.0407000.0287000.0288000.0288000.0304000.0339000.0338000.0340000.0339000.0339000.0338000.0340000.0432000.0273000.0273000.0273000.0273000.0273000.0273000.0275000.0427000.0218000.0218000.0218000.0226000.0228000.0227000.0223000.0482000.0182000.0119000.0118000.0119000.0119000.0173000.0231000.0
Percentage of AmortizationOfFinancingCosts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AmortizationOfIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value1721151212121010101096678879888998810755810998866101395
Percentage of AmortizationOfIntangibleAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued

pwr:Acquisitions2020



Period End2020-03-31
Value116812.0
Percentage of BusinessAcquisitionEquityInterestsIssuedOrIssuableNumberOfSharesIssued100.0

us-gaap:BusinessAcquisitionProFormaEarningsPerShareBasic



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.270.990.180.830.830.490.240.580.420.320.38000000000000010.450.310.220.320.250.17-0.070.219999999999999970.29
Percentage of BusinessAcquisitionProFormaEarningsPerShareBasic100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionProFormaEarningsPerShareDiluted



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value0.270.980.180.820.830.480.240.580.410.320.560.470.110.120.0300000000000000270.230.150.250.300000000000000040.430.370.240.85000000000000010.440.380.390.38000000000000010.450.310.220.320.250.17-0.070.219999999999999970.29
Percentage of BusinessAcquisitionProFormaEarningsPerShareDiluted100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value4212014527121571277439118936650
Percentage of BusinessAcquisitionsProFormaIncomeLossFromContinuingOperationsBeforeChangesInAccountingAndExtraordinaryItemsNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisitionsProFormaRevenue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value27663183344628482811311230042656242125122655232323032102204217921721191319431873189324742180186417662020166416721785129316851516142515311258106788911601281
Percentage of BusinessAcquisitionsProFormaRevenue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationAcquisitionRelatedCosts

pwr:Acquisitions2020



Period End2020-03-31
Value800000.0
Percentage of BusinessCombinationAcquisitionRelatedCosts100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationBargainPurchaseGainRecognizedAmount

pwr:Acquisitions2020



Period End2020-03-31
Value0.0
Percentage of BusinessCombinationBargainPurchaseGainRecognizedAmount0.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferred1

pwr:Acquisitions2020



Period End2020-03-31
Value25
Percentage of BusinessCombinationConsiderationTransferred1100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable

pwr:Acquisitions2020



Period End2020-03-31
Value4
Percentage of BusinessCombinationConsiderationTransferredEquityInterestsIssuedAndIssuable100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1

us-gaap:FairValueInputsLevel3



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value25340-181-60
Percentage of BusinessCombinationContingentConsiderationArrangementsChangeInAmountOfContingentConsiderationLiability1100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual

pwr:Acquisitions2020



Period End2020-03-31
Value-900000.0
Percentage of BusinessCombinationProFormaInformationEarningsOrLossOfAcquireeSinceAcquisitionDateActual100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual

pwr:Acquisitions2020



Period End2020-03-31
Value1
Percentage of BusinessCombinationProFormaInformationRevenueOfAcquireeSinceAcquisitionDateActual100.0

us-gaap:CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value211856-116-34-619-3848-7-4-6
Percentage of CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CommonStockDividendsPerShareDeclared



Period End2020-03-262020-03-312019-12-112019-12-312019-08-282019-09-302019-05-242019-06-302019-03-212019-03-312018-12-062018-12-312018-09-302018-06-302018-03-31
Value0.050.050.050.050000000000000020.040.040.040.040.040.040.040.040.00.00.0
Percentage of CommonStockDividendsPerShareDeclared100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0

us-gaap:DebtInstrumentInterestRateDuringPeriod



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-30
Value0.0311-0.00080000000000000210.03860.03880.03920.00029999999999999470.0370.03620.03340.00100000000000000090.02660.02490.0261-9.99999999999994e-050.02160.0217
Percentage of DebtInstrumentInterestRateDuringPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:DebtInstrumentPeriodicPaymentPrincipal

pwr:TermLoan, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-12-31
Value716
Percentage of DebtInstrumentPeriodicPaymentPrincipal100.0100.0

us-gaap:DeferredIncomeTaxExpenseBenefit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value4-564192455-7-216-33-1306-17-72-12-70338-10-28-5-156-110911-1411-111921-611
Percentage of DeferredIncomeTaxExpenseBenefit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pwr:CumulativeEffectPeriodOfAdoption

pwr:CumulativeEffectPeriodOfAdoptionAdjustment



Period End2020-01-01
Value1
Percentage of DeferredIncomeTaxExpenseBenefit0.0

us-gaap:Depreciation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value5456555352525150484848444243424241414041444240373635333331263231302929292827262726
Percentage of Depreciation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ConsolidationItems

us-gaap:CorporateNonSegment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value44544444343
Percentage of Depreciation7.68.29.88.18.48.78.88.67.79.37.6

us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments

us-gaap:OperatingSegments, pwr:ElectricPowerInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value282927262524242324
Percentage of Depreciation52.851.549.049.648.446.947.146.549.8

us-gaap:OperatingSegments, pwr:PipelineAndIndustrialInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value212222222223222220
Percentage of Depreciation39.640.341.242.243.244.344.144.942.5

us-gaap:DividendsCash



Period End2020-03-312019-09-302019-06-302019-03-31
Value7565
Percentage of DividendsCash100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-31
Value7565
Percentage of DividendsCash100.0100.0100.0100.0

us-gaap:RetainedEarnings



Period End2020-03-312019-09-302019-06-302019-03-31
Value7565
Percentage of DividendsCash100.0100.0100.0100.0

us-gaap:DividendsCommonStockCash



Period End2020-03-262019-12-112019-08-282019-05-242019-03-212018-12-06
Value775655
Percentage of DividendsCommonStockCash100.0100.0100.0100.0100.0100.0

us-gaap:EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations



Period End2020-03-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0000-10100001
Percentage of EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsIncludingDisposalGroupAndDiscontinuedOperations100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards

pwr:RestrictedStockUnitsToBeSettledInCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-30
Value3002200321132012101100002100010
Percentage of EmployeeServiceShareBasedCompensationCashFlowEffectCashUsedToSettleAwards100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value-2-5-3-403160500
Percentage of FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0

us-gaap:FinanceLeaseInterestExpense



Period End2020-03-312019-09-302019-06-302019-03-31
Value17000.015000.018000.021000.0
Percentage of FinanceLeaseInterestExpense100.0100.0100.0100.0

us-gaap:FinanceLeaseInterestPaymentOnLiability



Period End2020-03-312019-09-302019-06-302019-03-31
Value17000.015000.017000.021000.0
Percentage of FinanceLeaseInterestPaymentOnLiability100.0100.0100.0100.0

us-gaap:FinanceLeasePrincipalPayments



Period End2020-03-312019-09-302019-06-302019-03-31
Value201000.0411000.0482000.0630000.0
Percentage of FinanceLeasePrincipalPayments100.0100.0100.0100.0

us-gaap:FinanceLeaseRightOfUseAssetAmortization



Period End2020-03-312019-09-302019-06-302019-03-31
Value202000.0320000.0283000.0373000.0
Percentage of FinanceLeaseRightOfUseAssetAmortization100.0100.0100.0100.0

us-gaap:BusinessAcquisition

us-gaap:FinitelivedIntangibleAssetsAcquired1

pwr:Acquisitions2020



Period End2020-03-31
Value4
Percentage of FinitelivedIntangibleAssetsAcquired1100.0

us-gaap:BusinessAcquisition, us-gaap:FiniteLivedIntangibleAssetsByMajorClass

pwr:Acquisitions2020, us-gaap:CustomerRelationships



Period End2020-03-31
Value3
Percentage of FinitelivedIntangibleAssetsAcquired169.7

pwr:Acquisitions2020, us-gaap:NoncompeteAgreements



Period End2020-03-31
Value827000.0
Percentage of FinitelivedIntangibleAssetsAcquired118.1

pwr:Acquisitions2020, us-gaap:OrderOrProductionBacklog



Period End2020-03-31
Value205000.0
Percentage of FinitelivedIntangibleAssetsAcquired14.5

pwr:Acquisitions2020, us-gaap:TradeNames



Period End2020-03-31
Value349000.0
Percentage of FinitelivedIntangibleAssetsAcquired17.7

us-gaap:GainLossOnSaleOfPropertyPlantEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value02020-1000002-10100100000000000000000000-3-10
Percentage of GainLossOnSaleOfPropertyPlantEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:GoodwillAcquiredDuringPeriod



Period End2020-03-312019-03-312018-03-312016-03-312015-03-312014-12-312014-03-312013-03-312012-03-31
Value10214126185654142
Percentage of GoodwillAcquiredDuringPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BusinessAcquisition

pwr:Acquisitions2020



Period End2020-03-31
Value10
Percentage of GoodwillAcquiredDuringPeriod100.0

us-gaap:StatementBusinessSegments

pwr:ElectricPowerInfrastructureServices



Period End2020-03-312019-03-31
Value321
Percentage of GoodwillAcquiredDuringPeriod37.4100.0

pwr:PipelineAndIndustrialInfrastructureServices



Period End2020-03-312019-03-31
Value60
Percentage of GoodwillAcquiredDuringPeriod62.60.0

us-gaap:GoodwillForeignCurrencyTranslationGainLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value-266-435-132-6-7-21018-592
Percentage of GoodwillForeignCurrencyTranslationGainLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

pwr:ElectricPowerInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value-164-223
Percentage of GoodwillForeignCurrencyTranslationGainLoss62.062.360.370.266.2

pwr:PipelineAndIndustrialInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value-92-111
Percentage of GoodwillForeignCurrencyTranslationGainLoss38.037.739.729.833.8

us-gaap:GoodwillPurchaseAccountingAdjustments



Period End2020-03-312019-12-312019-09-302018-12-312018-09-302017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312011-12-31
Value000000000000000-6-10
Percentage of GoodwillPurchaseAccountingAdjustments100.00.00.00.00.00.00.0100.0100.0100.0100.00.0100.0100.00.0100.0100.0100.0

us-gaap:StatementBusinessSegments

pwr:ElectricPowerInfrastructureServices



Period End2020-03-312019-12-312019-09-30
Value-246000.00.00.0
Percentage of GoodwillPurchaseAccountingAdjustments100.00.00.0

us-gaap:IncomeLossFromEquityMethodInvestments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302014-12-312014-09-302014-06-302012-12-312012-09-30
Value-2121160-9-17-11-13-5-2-20000000000001
Percentage of IncomeLossFromEquityMethodInvestments100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0100.0100.0

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

pwr:UpstreamOilAndGasInvestmentFund



Period End2020-03-31
Value-3
Percentage of IncomeLossFromEquityMethodInvestments115.5

us-gaap:IncomeTaxesPaid



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value54740608213834177393821276245637125215738759366591266-402347603-2-1982431-34
Percentage of IncomeTaxesPaid100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInAccountsAndNotesReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-122-4804795615913016945131262723194-58177-105-158-7259-17-122-1372209061-231261-30-5302192559196459-85113-2-16
Percentage of IncreaseDecreaseInAccountsAndNotesReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerAsset



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-16-55-34107-5-96125566-142-20
Percentage of IncreaseDecreaseInContractWithCustomerAsset100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInContractWithCustomerLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value-12616867-23-22-48-6775943
Percentage of IncreaseDecreaseInContractWithCustomerLiability100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOperatingCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-30
Value-89-466137235250115170-311710-13126117-181853-120-121-12
Percentage of IncreaseDecreaseInOperatingCapital100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-110-18925044-66-46170151-27-187203-5569-3410532-29-114602227-95147-49-501895-29-47-613247-5011310222-17-425956-94
Percentage of IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value-84-5087329-4-1239188-10294-17-1913-1-1-1473130220022-1-13-4270-6-7-28-1036168-3-7
Percentage of IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value202320222022
Percentage of IncrementalCommonSharesAttributableToParticipatingNonvestedSharesWithNonForfeitableDividendRights100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IncrementalCommonSharesAttributableToShareBasedPaymentArrangements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312010-09-302010-06-30
Value201110111011000000000000000000000000000
Percentage of IncrementalCommonSharesAttributableToShareBasedPaymentArrangements100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InterestPaidNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-30
Value13191615131098565
Percentage of InterestPaidNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:InvestmentIncomeInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value00000000000000000000000011100000000000000
Percentage of InvestmentIncomeInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LeaseCost



Period End2020-03-312019-09-302019-06-302019-03-31
Value200242225231
Percentage of LeaseCost100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityAverageOutstandingAmount



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value145848172115241264778999226844876051840934694264727528517192103523
Percentage of LineOfCreditFacilityAverageOutstandingAmount100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-30
Value2024641987163714532461003105393609176014900518465518136470330123013083
Percentage of LineOfCreditFacilityMaximumAmountOutstandingDuringPeriod100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0

us-gaap:Range, us-gaap:DebtInstrument

us-gaap:LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage

srt:Maximum, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-09-302017-11-20
Value0.0040.00.004
Percentage of LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage100.00.0100.0

srt:Minimum, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-09-302017-11-20
Value0.0020.00.002
Percentage of LineOfCreditFacilityUnusedCapacityCommitmentFeePercentage50.00.050.0

us-gaap:MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value10010110100010000141221030052355633-600
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.00.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1010100
Percentage of MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders100.0100.0100.0100.098.198.198.0

us-gaap:NumberOfReportableSegments



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value2.00.00.00.02.00.0
Percentage of NumberOfReportableSegments100.00.00.00.0100.00.0

us-gaap:OperatingLeaseCost



Period End2020-03-312019-09-302019-06-302019-03-31
Value29303030
Percentage of OperatingLeaseCost100.0100.0100.0100.0

us-gaap:RelatedPartyTransactionsByRelatedParty

us-gaap:OperatingLeaseExpense

pwr:RelatedParties



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value444444333
Percentage of OperatingLeaseExpense100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:OperatingLeasePayments



Period End2020-03-312019-09-302019-06-302019-03-31
Value29292929
Percentage of OperatingLeasePayments100.0100.0100.0100.0

us-gaap:OtherComprehensiveIncomeLossNetOfTax



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value-8222-121518-4810-20-25-11382613-28-11360-29-6714-88-49-5031-17-2513-25-13-522-14116-28-2
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-82-12151810-20-25
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-82-12151810-20-25
Percentage of OtherComprehensiveIncomeLossNetOfTax100.0100.0100.0100.0100.0100.0100.0

us-gaap:OtherNoncashIncomeExpense



Period End2020-03-312019-03-31
Value0-1
Percentage of OtherNoncashIncomeExpense100.0100.0

us-gaap:PaymentForContingentConsiderationLiabilityFinancingActivities



Period End2020-03-312019-03-31
Value989000.00.0
Percentage of PaymentForContingentConsiderationLiabilityFinancingActivities100.00.0

us-gaap:PaymentsOfDividendsCommonStock



Period End2020-03-312019-03-31
Value75
Percentage of PaymentsOfDividendsCommonStock100.0100.0

us-gaap:PaymentsOfDividendsMinorityInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-30
Value1001011000000000141221030052355632500
Percentage of PaymentsOfDividendsMinorityInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0

us-gaap:PaymentsRelatedToTaxWithholdingForShareBasedCompensation



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value150011300112001160016
Percentage of PaymentsRelatedToTaxWithholdingForShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireBusinessesNetOfCashAcquired



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-07-312013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-30
Value22232935104815300352610280391029373410081376159123123000026412553
Percentage of PaymentsToAcquireBusinessesNetOfCashAcquired100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.00.00.0100.0100.0100.0100.0

us-gaap:PaymentsToAcquireIntangibleAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-30
Value0000011030000
Percentage of PaymentsToAcquireIntangibleAssets0.0100.00.0100.0100.0100.00.0100.00.00.00.00.0

us-gaap:ProceedsFromDivestitureOfBusinesses



Period End2020-03-312019-03-31
Value20
Percentage of ProceedsFromDivestitureOfBusinesses100.00.0

us-gaap:ProceedsFromIncomeTaxRefunds



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value214011111250232005710005101000100130201241
Percentage of ProceedsFromIncomeTaxRefunds100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromInsuranceSettlementInvestingActivities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value0100000000000
Percentage of ProceedsFromInsuranceSettlementInvestingActivities100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.00.0100.0

us-gaap:ProceedsFromLongTermLinesOfCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312012-12-312012-09-302012-06-30
Value1474134121181068164715988551062974871812550697684709696654109114856251472263753332277425349
Percentage of ProceedsFromLongTermLinesOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProceedsFromSaleOfPropertyPlantAndEquipment



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value46481013575647446558871424264212261041347130
Percentage of ProceedsFromSaleOfPropertyPlantAndEquipment100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ProvisionForDoubtfulAccounts



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value07002420000000000000000101001000100000000
Percentage of ProvisionForDoubtfulAccounts100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfLongTermLinesOfCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312012-12-312012-09-302012-06-30
Value11711864178990113471471743110176095954149163180862569672996013425281032312983332402339310
Percentage of RepaymentsOfLongTermLinesOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RepaymentsOfOtherLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302012-12-312012-09-302012-06-302011-12-312011-09-302011-06-302011-03-312010-12-312010-09-302010-06-302010-03-31
Value0010000001011000400000190100000001210003
Percentage of RepaymentsOfOtherLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability



Period End2020-03-312019-09-302019-06-302019-03-31
Value866000.010000.0220000.0401000.0
Percentage of RightOfUseAssetObtainedInExchangeForFinanceLeaseLiability100.0100.0100.0100.0

us-gaap:RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability



Period End2020-03-312019-09-302019-06-302019-03-31
Value29322715
Percentage of RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue

pwr:PerformanceStockUnitsPSUs



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value34.560.00.0-24.65999999999999740.150.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue100.00.00.0100.0100.00.00.0

pwr:RestrictedStockUnitsToBeSettledInCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value39.070.169999999999994634.0736.535.85-0.06000000000000227433.7336.3834.46-0.1400000000000005732.7633.3238.180.0899999999999998624.9223.5921.95
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue113.00.00.0-148.089.30.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod

pwr:PerformanceStockUnitsPSUs



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value200000.00.00.00.0200000.00.00.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod100.00.00.00.0100.00.00.00.0

pwr:RestrictedStockUnitsToBeSettledInCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value1000100010001
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod550.00.00.00.0600.00.00.00.00.00.00.00.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue

pwr:RestrictedStockUnitsToBeSettledInCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-31
Value43123410134201350
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate

pwr:PerformanceStockUnitsPSUs



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.340.00.00.00.250.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate100.00.00.00.0100.00.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate

pwr:PerformanceStockUnitsPSUs



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.00350.00.00.00.02430.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate100.00.00.00.0100.00.00.0

us-gaap:AwardType

us-gaap:ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod

pwr:PerformanceStockUnitsPSUs



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-30
Value500000.00.00.00.0400000.00.00.00.0
Percentage of ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod100.00.00.00.0100.00.00.00.0

us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

us-gaap:StockIssuedDuringPeriodSharesShareBasedCompensation

pwr:CommonStockClassUndefined, us-gaap:CommonStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value1000000
Percentage of StockIssuedDuringPeriodSharesShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueAcquisitions



Period End2020-03-312019-09-302018-09-302018-03-31
Value41913
Percentage of StockIssuedDuringPeriodValueAcquisitions100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-09-302018-09-302018-03-31
Value41913
Percentage of StockIssuedDuringPeriodValueAcquisitions100.0100.0100.0100.0

us-gaap:Parent



Period End2020-03-312019-09-302018-09-302018-03-31
Value41913
Percentage of StockIssuedDuringPeriodValueAcquisitions100.0100.0100.0100.0

us-gaap:StockIssuedDuringPeriodValueShareBasedCompensation



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-81214-111131
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementEquityComponents

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value11131417111317
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation-137.8104.7105.4-902.2104.1106.71381.9

us-gaap:Parent



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-81214-111131
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation100.0100.0100.0100.0100.0100.0100.0

us-gaap:TreasuryStock



Period End2020-03-312019-09-302019-06-302019-03-312018-09-302018-06-302018-03-31
Value-1900-1900-16
Percentage of StockIssuedDuringPeriodValueShareBasedCompensation237.8-4.7-5.41002.2-4.1-6.7-1281.9

us-gaap:StockRepurchasedDuringPeriodShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value500007004
Percentage of StockRepurchasedDuringPeriodShares100.00.00.00.0100.0100.0100.0100.0100.0

us-gaap:StockRepurchasedDuringPeriodValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-31
Value200000112332319173
Percentage of StockRepurchasedDuringPeriodValue100.00.00.00.0100.0100.0100.0100.0100.0

us-gaap:StockholdersEquityOther



Period End2020-03-31
Value223000.0
Percentage of StockholdersEquityOther100.0

us-gaap:StatementEquityComponents

us-gaap:NoncontrollingInterest



Period End2020-03-31
Value-293000.0
Percentage of StockholdersEquityOther-131.4

us-gaap:Parent



Period End2020-03-31
Value516000.0
Percentage of StockholdersEquityOther231.4

us-gaap:RetainedEarnings



Period End2020-03-31
Value516000.0
Percentage of StockholdersEquityOther231.4

us-gaap:StatementClassOfStock

us-gaap:TreasuryStockSharesAcquired

pwr:CommonStockWithheldForSettlementOfEmployeeTaxLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value600000.00.00.0100000.0400000.00.00.00.0400000.00.00.00.0500000.00.00.0324959.04864.02687.075141.0296874.080950.02103.03588.0283366.020239.01642.06441.0271482.020477.05195.0
Percentage of TreasuryStockSharesAcquired100.00.00.0100.0100.00.00.00.0100.00.00.00.0100.00.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

pwr:CommonStockClassUndefined, us-gaap:CommonStock



Period End2020-03-312019-03-312018-09-302018-06-302018-03-31
Value50004
Percentage of TreasuryStockSharesAcquired993.493.90.00.01242.3

us-gaap:TreasuryStockValueAcquiredCostMethod



Period End2020-03-312019-03-312018-09-302018-06-302018-03-312011-08-31
Value200112319173149
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0100.0

us-gaap:PlanName

pwr:TreasuryStockAssociatedWithDeferredCompensationPlans



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-31
Value3000300030003-1007
Percentage of TreasuryStockValueAcquiredCostMethod1.80.00.00.031.80.00.00.01.90.00.00.00.00.00.00.00.0

us-gaap:StatementClassOfStock

pwr:CommonStockWithheldForSettlementOfEmployeeTaxLiabilities



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312010-09-30
Value23000150001300017001100290006000600
Percentage of TreasuryStockValueAcquiredCostMethod11.60.00.00.0128.00.02.14.07.70.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-03-312019-03-312018-09-302018-06-302018-03-31
Value200112319173
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.0

us-gaap:TreasuryStock



Period End2020-03-312019-03-312018-09-302018-06-302018-03-312015-06-302015-03-312014-12-312014-06-30
Value2001123191731721824845
Percentage of TreasuryStockValueAcquiredCostMethod100.0100.0100.0100.0100.00.00.00.00.0

us-gaap:BusinessAcquisition

pwr:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractAssetsCurrent

pwr:Acquisitions2020



Period End2020-03-31
Value0.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractAssetsCurrent0.0

us-gaap:BusinessAcquisition

pwr:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractLiabilities

pwr:Acquisitions2020



Period End2020-03-31
Value0.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedContractLiabilities0.0

us-gaap:TypeOfArrangement

pwr:ContractWithCustomerContractValue

pwr:PipelineTransmissionProject



Period End2020-03-31
Value95
Percentage of ContractWithCustomerContractValue100.0

us-gaap:BalanceSheetLocation

pwr:ContractWithCustomerLiabilityDeferredRevenuesCurrent

us-gaap:AccountsPayableAndAccruedLiabilities



Period End2020-03-312019-12-312018-12-312017-12-31
Value22334016
Percentage of ContractWithCustomerLiabilityDeferredRevenuesCurrent100.0100.0100.0100.0

pwr:LeasesOptionToPurchaseAssetFailedSaleLeaseback



Period End2020-03-312019-12-31
Value2111
Percentage of LeasesOptionToPurchaseAssetFailedSaleLeaseback100.0100.0

pwr:OperatingAndFinanceLeaseLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value293289292287287
Percentage of OperatingAndFinanceLeaseLiability100.0100.0100.0100.0100.0

pwr:OperatingAndFinanceLeaseRightOfUseAsset



Period End2020-03-312019-12-31
Value288285
Percentage of OperatingAndFinanceLeaseRightOfUseAsset100.0100.0

pwr:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization



Period End2020-03-312019-12-31
Value12521250
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAccumulatedDepreciationAndAmortization100.0100.0

pwr:PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization



Period End2020-03-312019-12-31
Value13881386
Percentage of PropertyPlantAndEquipmentAndFinanceLeaseRightOfUseAssetAfterAccumulatedDepreciationAndAmortization100.0100.0

pwr:RevenueRecognizedRelatedToUnapprovedChangeOrdersAndClaims



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value14117015013112212111811090144
Percentage of RevenueRecognizedRelatedToUnapprovedChangeOrdersAndClaims100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pwr:ShortTermDebtAndLongTermDebtCurrentMaturities



Period End2020-03-312019-12-31
Value7374
Percentage of ShortTermDebtAndLongTermDebtCurrentMaturities100.0100.0

us-gaap:MajorCustomers, us-gaap:AccountsNotesLoansAndFinancingReceivableByReceivableType

us-gaap:AccountsReceivableNet

pwr:PGE, pwr:PrePetitionReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-01-29
Value575448157
Percentage of AccountsReceivableNet100.0100.0100.0100.0100.0

us-gaap:AccountsReceivableNetNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value121255536925
Percentage of AccountsReceivableNetNoncurrent100.0100.0100.0100.0100.0100.0

us-gaap:AdditionalPaidInCapitalCommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value204020242014199919841967195519341920188918781785176417493689367635163497348936193609359235173477346334163338331132983287327632683244321632013173316631623065
Percentage of AdditionalPaidInCapitalCommonStock100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:AllowanceForDoubtfulAccountsReceivable



Period End2020-03-312019-12-312019-03-312018-12-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312012-06-302012-03-312011-12-312011-09-302011-06-302010-12-312009-12-31
Value149854256555437779
Percentage of AllowanceForDoubtfulAccountsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pwr:CumulativeEffectPeriodOfAdoption

pwr:CumulativeEffectPeriodOfAdoptionAdjustment



Period End2020-01-01
Value5
Percentage of AllowanceForDoubtfulAccountsReceivable0.0

us-gaap:AllowanceForDoubtfulAccountsReceivableCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value1497885645455522225566666555555554366668
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

pwr:CumulativeEffectPeriodOfAdoption

pwr:CumulativeEffectPeriodOfAdoptionAdjustment



Period End2020-01-01
Value5
Percentage of AllowanceForDoubtfulAccountsReceivableCurrent0.0

pwr:InvestmentsByConsolidatedAndNonconsolidatedEntities

us-gaap:AssetsNet

us-gaap:VariableInterestEntityPrimaryBeneficiary



Period End2020-03-312019-12-31
Value139
Percentage of AssetsNet100.0100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount

pwr:Acquisitions2020



Period End2020-03-31
Value3
Percentage of BusinessAcquisitionPurchasePriceAllocationGoodwillExpectedTaxDeductibleAmount100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationContingentConsiderationLiability

pwr:Acquisitions2020



Period End2020-03-31
Value2
Percentage of BusinessCombinationContingentConsiderationLiability100.0

us-gaap:FairValueByFairValueHierarchyLevel

us-gaap:FairValueInputsLevel3



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302017-12-31
Value8884797570707465
Percentage of BusinessCombinationContingentConsiderationLiability3911.10.00.00.00.00.00.00.0

us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302018-12-312018-03-312017-12-312017-09-302016-12-31
Value8884797079657019
Percentage of BusinessCombinationContingentConsiderationLiability3911.40.00.00.00.00.00.00.0

us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:BusinessCombinationContingentConsiderationLiabilityCurrent

us-gaap:AccountsPayableAndAccruedLiabilities, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302018-12-31
Value8077700
Percentage of BusinessCombinationContingentConsiderationLiabilityCurrent100.0100.0100.00.0

us-gaap:Range, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:MeasurementInputType

us-gaap:BusinessCombinationContingentConsiderationLiabilityMeasurementInput

srt:Maximum, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputDiscountRate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.0390.0390.0390.0390.0390.0380.036
Percentage of BusinessCombinationContingentConsiderationLiabilityMeasurementInput100.0100.0100.0100.0100.0100.0100.0

srt:Minimum, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputDiscountRate



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.0160.0160.0210.0210.0210.0210.021
Percentage of BusinessCombinationContingentConsiderationLiabilityMeasurementInput41.041.053.853.853.855.358.3

srt:Minimum, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputPriceVolatility



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-30
Value0.2040.2040.2220.2220.2220.2220.23
Percentage of BusinessCombinationContingentConsiderationLiabilityMeasurementInput523.1523.1569.2569.2569.2584.2638.9

srt:WeightedAverage, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputDiscountRate



Period End2020-03-31
Value0.023
Percentage of BusinessCombinationContingentConsiderationLiabilityMeasurementInput59.0

srt:WeightedAverage, us-gaap:FairValueInputsLevel3, us-gaap:MeasurementInputPriceVolatility



Period End2020-03-31
Value0.226
Percentage of BusinessCombinationContingentConsiderationLiabilityMeasurementInput579.5

us-gaap:BalanceSheetLocation, us-gaap:FairValueByFairValueHierarchyLevel, us-gaap:FairValueByMeasurementFrequency

us-gaap:BusinessCombinationContingentConsiderationLiabilityNoncurrent

us-gaap:OtherNoncurrentLiabilities, us-gaap:FairValueInputsLevel3, us-gaap:FairValueMeasurementsRecurring



Period End2020-03-312019-12-312019-09-302018-12-31
Value76870
Percentage of BusinessCombinationContingentConsiderationLiabilityNoncurrent100.0100.0100.0100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther

pwr:Acquisitions2020



Period End2020-03-31
Value1
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsOther100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables

pwr:Acquisitions2020



Period End2020-03-31
Value4
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentAssetsReceivables100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities

pwr:Acquisitions2020



Period End2020-03-31
Value1
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedCurrentLiabilities100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities

pwr:Acquisitions2020



Period End2020-03-31
Value483000.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedDeferredTaxLiabilities100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill

pwr:Acquisitions2020



Period End2020-03-31
Value4
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedIntangibleAssetsOtherThanGoodwill100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet

pwr:Acquisitions2020



Period End2020-03-31
Value15
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNet100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther

pwr:Acquisitions2020



Period End2020-03-31
Value0.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedNoncurrentLiabilitiesOther0.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets

pwr:Acquisitions2020



Period End2020-03-31
Value0.0
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedOtherNoncurrentAssets0.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment

pwr:Acquisitions2020



Period End2020-03-31
Value6
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredAndLiabilitiesAssumedPropertyPlantAndEquipment100.0

us-gaap:BusinessAcquisition

us-gaap:BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet

pwr:Acquisitions2020



Period End2020-03-31
Value25
Percentage of BusinessCombinationRecognizedIdentifiableAssetsAcquiredGoodwillAndLiabilitiesAssumedNet100.0

us-gaap:CashEquivalentsAtCarryingValue



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value1793737373737555577888875712491071717662471301861899216715616596318460
Percentage of CashEquivalentsAtCarryingValue100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractReceivableRetainageDueAfterOneYear



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value575434899969069412631956454330241917675550422829222317182820158
Percentage of ContractReceivableRetainageDueAfterOneYear100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractReceivableRetainageDueOneYearOrLess



Period End2020-03-312019-12-312019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value313299468467337297254277300298239253231258221235250298284304307276191194194222211192180205166150117110103119
Percentage of ContractReceivableRetainageDueOneYearOrLess100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerAssetNetCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value569601652683573576497
Percentage of ContractWithCustomerAssetNetCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:ContractWithCustomerLiabilityCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-31
Value591606540471403425433
Percentage of ContractWithCustomerLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption



Period End2020-01-012018-01-01
Value-3-1
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption100.0100.0

pwr:CumulativeEffectPeriodOfAdoption

pwr:CumulativeEffectPeriodOfAdoptionAdjustment



Period End2020-01-01
Value-3
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption98.9

us-gaap:StatementEquityComponents

us-gaap:Parent



Period End2020-01-012018-01-01
Value-3-1
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption100.0100.0

us-gaap:RetainedEarnings



Period End2020-01-012018-01-01
Value-3-1
Percentage of CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption100.0100.0

us-gaap:AwardType

us-gaap:DeferredCompensationShareBasedArrangementsLiabilityCurrent

pwr:RestrictedStockUnitsToBeSettledInCash



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-31
Value242123213432553232223221021100
Percentage of DeferredCompensationShareBasedArrangementsLiabilityCurrent100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:DeferredIncomeTaxLiabilitiesNet



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302016-12-31
Value217214279276253219209196196179211192
Percentage of DeferredIncomeTaxLiabilitiesNet100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestmentOwnershipPercentage

pwr:EquityMethodInvestmentInElectricPowerInfrastructureServicesCompany



Period End2020-03-31
Value0.49
Percentage of EquityMethodInvestmentOwnershipPercentage100.0

pwr:UpstreamOilAndGasInvestmentFund



Period End2020-03-31
Value0.16
Percentage of EquityMethodInvestmentOwnershipPercentage32.7

us-gaap:ScheduleOfEquityMethodInvestmentEquityMethodInvesteeName

us-gaap:EquityMethodInvestments

pwr:InfrastructureInvestorsPartnership



Period End2020-03-31
Value21
Percentage of EquityMethodInvestments100.0

pwr:UpstreamOilAndGasInvestmentFund



Period End2020-03-31
Value10
Percentage of EquityMethodInvestments48.3

us-gaap:FinanceLeaseLiability



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value10121
Percentage of FinanceLeaseLiability100.0100.0100.0100.0100.0

us-gaap:FinanceLeaseLiabilityCurrent



Period End2020-03-312019-12-31
Value505000.0440000.0
Percentage of FinanceLeaseLiabilityCurrent100.0100.0

us-gaap:FinanceLeaseLiabilityNoncurrent



Period End2020-03-312019-12-31
Value988000.0517000.0
Percentage of FinanceLeaseLiabilityNoncurrent100.0100.0

us-gaap:FinanceLeaseRightOfUseAsset



Period End2020-03-312019-12-31
Value11
Percentage of FinanceLeaseRightOfUseAsset100.0100.0

us-gaap:FiniteLivedIntangibleAssetsAccumulatedAmortization



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value44643741440038637236435234333532431330529729128327526424423926125524824023022321420620219819418317416415514814113496
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

pwr:Curriculum



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value2211100000
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization0.50.60.40.30.30.20.20.10.10.0

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value22321319718717216515815014313712912111511010610196907571777459473827
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization50.148.947.746.844.644.543.642.741.940.939.738.738.037.236.635.835.134.330.730.029.929.026.624.123.220.7

us-gaap:DevelopedTechnologyRights



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value202020192419181818171716161515141413131212119754
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization4.74.74.95.06.45.25.25.25.25.25.35.35.35.35.35.25.25.25.45.34.74.64.33.83.43.2

us-gaap:NoncompeteAgreements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value3332313029302928282726262525252424232222252522201713
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization7.47.57.77.77.78.18.28.28.28.28.38.48.58.68.78.88.88.99.29.39.79.810.210.510.79.8

us-gaap:OrderOrProductionBacklog



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value13914113713613513413513413513513513413313213213112912612512413813812711910188
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization31.232.333.234.135.036.237.338.339.340.541.842.843.744.545.346.247.148.051.252.253.154.157.060.161.565.6

us-gaap:TradeNames



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2726252422212019181715141312121110987664311
Percentage of FiniteLivedIntangibleAssetsAccumulatedAmortization6.16.06.16.15.95.85.75.55.35.14.94.74.54.34.24.03.83.63.43.22.62.51.91.51.20.7

us-gaap:FiniteLivedIntangibleAssetsGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value839848842661659649645611614598599497487484489487487469470473508511426377367328
Percentage of FiniteLivedIntangibleAssetsGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:FiniteLivedIntangibleAssetsByMajorClass

pwr:Curriculum



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-31
Value1111119999990
Percentage of FiniteLivedIntangibleAssetsGross1.41.41.31.41.41.51.41.51.50.0

us-gaap:CustomerRelationships



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value527532531369358359354326328327328254246244247247247236236239255257199170171153
Percentage of FiniteLivedIntangibleAssetsGross62.862.863.155.854.355.454.953.453.454.754.751.250.550.450.650.750.850.450.350.550.350.346.745.246.846.6

us-gaap:DevelopedTechnologyRights



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value2222222232222222222222222222222222222222222221201616
Percentage of FiniteLivedIntangibleAssetsGross2.72.72.73.44.93.53.53.73.73.83.84.54.64.64.64.64.64.84.84.84.44.35.05.54.54.9

us-gaap:NoncompeteAgreements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value4343434040404037373737292929292929282828313128272723
Percentage of FiniteLivedIntangibleAssetsGross5.25.15.16.26.26.36.26.26.16.36.36.06.06.06.06.06.06.16.16.06.26.16.87.37.57.3

us-gaap:OrderOrProductionBacklog



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value142144140137136135137135136136136134134133134133133130131132149151136126121108
Percentage of FiniteLivedIntangibleAssetsGross16.917.116.720.720.720.921.322.222.222.822.827.127.527.627.527.427.427.827.928.029.429.632.133.433.233.0

us-gaap:TradeNames



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312013-12-312012-12-312011-12-312010-12-31
Value9293938282818180807474555554555454515151494940322927
Percentage of FiniteLivedIntangibleAssetsGross11.011.011.012.512.512.512.713.113.112.512.511.111.311.311.311.211.210.910.910.89.89.79.58.68.18.3

us-gaap:GoodwillGross



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-31
Value21012119209820282023199619121994200019661977165616481642165216351635159215371734172817091664164916241512
Percentage of GoodwillGross100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

pwr:ElectricPowerInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-31
Value135213651349134213381313127212531226
Percentage of GoodwillGross64.464.464.366.266.165.864.776.377.0

pwr:PipelineAndIndustrialInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-31
Value748753748686685683693388366
Percentage of GoodwillGross35.635.635.733.833.934.235.323.723.0

us-gaap:GoodwillImpairedAccumulatedImpairmentLoss



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312012-09-302012-06-302012-03-312011-12-312011-09-302010-12-312009-12-31
Value9496959696960979797404040394040403963636363636363
Percentage of GoodwillImpairedAccumulatedImpairmentLoss100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementBusinessSegments

pwr:PipelineAndIndustrialInfrastructureServices



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312017-12-312016-12-312015-12-31
Value949695969696973939
Percentage of GoodwillImpairedAccumulatedImpairmentLoss100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:IndefiniteLivedIntangibleAssetsByMajorClass

us-gaap:IndefiniteLivedIntangibleAssetsExcludingGoodwill

us-gaap:LicensingAgreements



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value333333330
Percentage of IndefiniteLivedIntangibleAssetsExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:LossContingenciesByNatureOfContingency

us-gaap:InsuranceSettlementsReceivable

pwr:EmployersLiabilityWorkersCompensationAutoLiabilityGeneralLiabilityAndGroupHealthCareClaims



Period End2020-03-312019-12-312018-12-31
Value313556
Percentage of InsuranceSettlementsReceivable100.0100.0100.0

us-gaap:LossContingenciesByNatureOfContingency

us-gaap:InsuranceSettlementsReceivableNoncurrent

pwr:EmployersLiabilityWorkersCompensationAutoLiabilityGeneralLiabilityAndGroupHealthCareClaims



Period End2020-03-312019-12-312018-12-31
Value313456
Percentage of InsuranceSettlementsReceivableNoncurrent100.0100.0100.0

us-gaap:IntangibleAssetsGrossExcludingGoodwill



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-31
Value842851845664662652648614598
Percentage of IntangibleAssetsGrossExcludingGoodwill100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:LettersOfCreditOutstandingAmount

us-gaap:LetterOfCredit, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-12-312019-09-30
Value373383346
Percentage of LettersOfCreditOutstandingAmount100.0100.0100.0

us-gaap:Currency, us-gaap:CreditFacility, us-gaap:DebtInstrument

currency:USD, pwr:LettersOfCreditAndBankGuarantees, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-12-312019-09-30
Value252252235
Percentage of LettersOfCreditOutstandingAmount67.565.868.0

pwr:CanadianAndAustralianDollars, pwr:LettersOfCreditAndBankGuarantees, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-12-312019-09-30
Value121131111
Percentage of LettersOfCreditOutstandingAmount32.534.232.0

us-gaap:LossContingenciesByNatureOfContingency

us-gaap:LiabilityForClaimsAndClaimsAdjustmentExpense

pwr:EmployersLiabilityWorkersCompensationAutoLiabilityGeneralLiabilityAndGroupHealthCareClaims



Period End2020-03-312019-12-312018-12-31
Value294287272
Percentage of LiabilityForClaimsAndClaimsAdjustmentExpense100.0100.0100.0

us-gaap:LineOfCredit



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-30
Value1635134618651540137210709528408826687574804173514793983974663392041066876
Percentage of LineOfCredit100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:CreditFacility, us-gaap:DebtInstrument

pwr:TermLoan, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value123012401260577585592
Percentage of LineOfCredit75.292.167.537.542.655.4

us-gaap:RevolvingCreditFacility, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value410104608962787477
Percentage of LineOfCredit25.17.832.662.557.444.6

us-gaap:Currency, us-gaap:DebtInstrument

currency:AUD, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-12-31
Value3039
Percentage of LineOfCredit1.92.9

currency:CAD, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-12-31
Value12861
Percentage of LineOfCredit7.94.6

currency:USD, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-12-31
Value14801250
Percentage of LineOfCredit90.592.8

us-gaap:DebtInstrument

pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-31
Value164013501870154013701070
Percentage of LineOfCredit100.3100.3100.2100.099.9100.0

us-gaap:Currency, us-gaap:CreditFacility, us-gaap:DebtInstrument

us-gaap:LineOfCreditFacilityMaximumBorrowingCapacity

currency:AUD, pwr:SwingLinesLoan, pwr:SeniorSecuredCreditFacility



Period End2020-03-312019-09-302019-09-122019-06-302018-10-102015-12-18
Value505050505030
Percentage of LineOfCreditFacilityMaximumBorrowingCapacity100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtAndCapitalLeaseObligations



Period End2020-03-312019-12-312018-12-312011-12-312010-12-31
Value15891292104000
Percentage of LongTermDebtAndCapitalLeaseObligations100.0100.0100.00.00.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsCurrent



Period End2020-03-312019-12-312018-12-312013-12-312012-12-312011-12-312010-12-31
Value7068322001
Percentage of LongTermDebtAndCapitalLeaseObligationsCurrent100.0100.0100.0100.0100.0100.0100.0

us-gaap:LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities



Period End2020-03-312019-12-312018-12-31
Value165913601072
Percentage of LongTermDebtAndCapitalLeaseObligationsIncludingCurrentMaturities100.0100.0100.0

us-gaap:OperatingLeaseLiabilityCurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value9192939292
Percentage of OperatingLeaseLiabilityCurrent100.0100.0100.0100.0100.0

us-gaap:OperatingLeaseLiabilityNoncurrent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-31
Value200196197192193
Percentage of OperatingLeaseLiabilityNoncurrent100.0100.0100.0100.0100.0

dei:LegalEntity, us-gaap:OtherCommitments, us-gaap:StatementScenario

us-gaap:OtherCommitment

pwr:InfrastructureInvestorsPartnership, pwr:CapitalforInfrastructureProjects, us-gaap:ScenarioForecast



Period End2024-08-31
Value1000
Percentage of OtherCommitment100.0

us-gaap:OtherCommitments, us-gaap:StatementScenario

pwr:CapitalforInfrastructureProjects, us-gaap:ScenarioForecast



Period End2024-08-31
Value80
Percentage of OtherCommitment8.0

pwr:OtherCommitmentsPlannedOilAndGasInfrastructureProjects, us-gaap:ScenarioForecast



Period End2022-05-312019-12-312018-12-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-30
Value20114004000
Percentage of OtherCommitment0.00.00.00.00.00.00.00.00.0

us-gaap:StatementScenario, us-gaap:OtherCommitments

srt:ScenarioForecast, pwr:OtherCommitmentsPlannedOilAndGasInfrastructureProjects



Period End2022-05-312019-12-31
Value141
Percentage of OtherCommitment0.00.0

us-gaap:OtherLongTermDebt



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-31
Value2213118411111212333555566
Percentage of OtherLongTermDebt100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:BalanceSheetLocation

us-gaap:RestrictedCashAndCashEquivalents

us-gaap:OtherAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value001111110000000
Percentage of RestrictedCashAndCashEquivalents100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0

us-gaap:PrepaidExpensesAndOtherCurrentAssets



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312015-12-31
Value343333323532010
Percentage of RestrictedCashAndCashEquivalents382.4437.1335.4363.1294.7256.1238.2201.2822.91329.7789.9631.5138.4329.90.0

us-gaap:RevenueRemainingPerformanceObligation



Period End2020-03-312019-12-312018-12-31
Value537053004680
Percentage of RevenueRemainingPerformanceObligation100.0100.0100.0

us-gaap:RevenueRemainingPerformanceObligationPercentage



Period End2020-03-312019-12-312018-12-31
Value0.6360.5950.662
Percentage of RevenueRemainingPerformanceObligationPercentage100.0100.0100.0

us-gaap:AwardType

us-gaap:SharePrice

pwr:PerformanceStockUnitsPSUs



Period End2020-03-262019-03-082018-02-282017-03-22
Value31.4935.1934.4436.31
Percentage of SharePrice100.0100.0100.0100.0

us-gaap:ShortTermBorrowings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302017-12-312017-09-302017-06-302016-12-312015-12-312015-03-312014-12-31
Value36718113320120002445
Percentage of ShortTermBorrowings100.0100.0100.0100.0100.0100.0100.0100.00.00.00.0100.0100.0100.0100.0

us-gaap:StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-312008-12-312007-12-31
Value37954053390937763725360538243693364637953730350933983342327632033173308732034209431045254488440143164241402438873830377136703546347033893302330333593366311026822218
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents

pwr:CommonStockClassUndefined, us-gaap:CommonStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-31
Value2000.02000.02000.02000.02000.02000.02000.02000.02000.02000.01000.02000.0
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.00.00.00.00.00.00.00.00.00.00.00.0

us-gaap:StatementEquityComponents

us-gaap:AccumulatedOtherComprehensiveIncome



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-324-241-264-251-267-286-237-248-228-203-271-294-123-37140143-23
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-8.6-6.0-6.8-6.7-7.2-7.9-6.2-6.7-6.3-5.4-8.1-9.5-2.7-0.90.40.00.40.1-0.10.2

us-gaap:AdditionalPaidInCapital



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value20402024201419991984196719551934192018891749349735923416328732163162306528032486
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest53.849.951.552.953.354.651.152.452.749.852.3113.379.480.687.194.993.998.6104.5112.1

us-gaap:NoncontrollingInterest



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value431111123432117571100
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest0.10.10.00.00.00.00.00.10.10.10.10.10.20.20.10.20.00.00.00.0

us-gaap:Parent



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value37904050390737743723360438223690364337913339308545144234376633813365310926822218
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest99.999.9100.0100.0100.0100.0100.099.999.999.999.999.999.899.899.999.8100.0100.0100.0100.0

us-gaap:RetainedEarnings



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value2881285427432612259124772425230122262191187616771366107066836122975-86-243
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest75.970.470.269.269.668.763.462.361.157.756.154.330.225.217.710.76.82.4-3.2-11.0

us-gaap:TreasuryStock



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312016-12-312015-12-312014-12-312013-12-312012-12-312011-12-312010-12-312009-12-312008-12-312007-12-31
Value-806-586-586-586-585-554-321-296-276-85-14-1795-321-215-203-196-40-35-32-27
Percentage of StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest-21.3-14.5-15.0-15.5-15.7-15.4-8.4-8.0-7.6-2.3-0.4-58.1-7.1-5.1-5.4-5.8-1.2-1.1-1.2-1.2

us-gaap:TreasuryStockShares



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302011-03-312010-12-312009-12-31
Value231717171716877100008484757471282215131312121212111111111111118322
Percentage of TreasuryStockShares100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.00.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

us-gaap:UnbilledContractsReceivable



Period End2020-03-312019-12-312019-09-302019-06-302019-03-312018-12-312018-09-302018-06-302018-03-312017-12-312017-09-302017-06-302017-03-312016-12-312016-09-302016-06-302016-03-312015-12-312015-09-302015-06-302015-03-312014-12-312014-09-302014-06-302014-03-312013-12-312013-09-302013-06-302013-03-312012-12-312012-09-302012-06-302012-03-312011-12-312011-09-302011-06-302010-12-31
Value563524732605481434460433387303393247296206243228228233255229198165223230211179193165144127193162162140184152103
Percentage of UnbilledContractsReceivable100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0100.0

Line plots across dimensions of each concept

us-gaap:SharesOutstanding us-gaap:StatementClassOfStock, us-gaap:StatementEquityComponents


us-gaap:CommonStockSharesIssued us-gaap:StatementClassOfStock


us-gaap:CommonStockSharesOutstanding us-gaap:StatementClassOfStock


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:StatementGeographical


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ContractWithCustomerBasisOfPricing


us-gaap:RevenueFromContractWithCustomerExcludingAssessedTax us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


us-gaap:OperatingIncomeLoss us-gaap:ConsolidationItems, us-gaap:StatementBusinessSegments


us-gaap:ProfitLoss us-gaap:StatementEquityComponents


us-gaap:CashAndCashEquivalentsAtCarryingValue us-gaap:CashAndCashEquivalents


us-gaap:Goodwill us-gaap:StatementBusinessSegments


us-gaap:FiniteLivedIntangibleAssetsNet us-gaap:FiniteLivedIntangibleAssetsByMajorClass


us-gaap:ProfitLoss us-gaap:StatementEquityComponents