10-Q Filing

PINNACLE WEST CAPITAL CORP CIK: 764622 Q3 2024

Filing Information

Form Type	10-Q
Accession Number	`0000764622-24-000079`
Period End Date	20240930
Filing Date	20241106
Fiscal Year	2024
Fiscal Period	Q3
XBRL Instance	pnw-20240930_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 288 Income Statement 200 Cash Flow Statement 196 Stockholders Equity 92 Comprehensive Income 72

Balance Sheet 288 line items

Line Item	Tag	Value	Unit	Period
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	150.00M	shares	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	150.00M	shares	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	150.00M	shares	Point-in-time
Common stock, authorized (in shares)	`CommonStockSharesAuthorized`	150.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$49.17M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$49.17M	USD	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	113.54M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	113.54M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	113.74M	shares	Point-in-time
Common stock, issued (in shares)	`CommonStockSharesIssued`	113.74M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$4.96M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$4.96M	USD	Point-in-time
Treasury stock at cost (in shares)	`TreasuryStockCommonShares`	101,641.00	shares	Point-in-time
Treasury stock at cost (in shares)	`TreasuryStockCommonShares`	101,641.00	shares	Point-in-time
Customer and other receivables	`AccountsReceivableGrossCurrent`	$513.89M	USD	Point-in-time
Customer and other receivables	`AccountsReceivableGrossCurrent`	$513.89M	USD	Point-in-time
Treasury stock at cost (in shares)	`TreasuryStockCommonShares`	113,272.00	shares	Point-in-time
Treasury stock at cost (in shares)	`TreasuryStockCommonShares`	113,272.00	shares	Point-in-time
Customer and other receivables	`AccountsReceivableGrossCurrent`	$839.09M	USD	Point-in-time
Customer and other receivables	`AccountsReceivableGrossCurrent`	$839.09M	USD	Point-in-time
Accrued unbilled revenues (Note 2)	`ContractWithCustomerAssetNetCurrent`	$167.55M	USD	Point-in-time
Accrued unbilled revenues (Note 2)	`ContractWithCustomerAssetNetCurrent`	$167.55M	USD	Point-in-time
Accrued unbilled revenues (Note 2)	`ContractWithCustomerAssetNetCurrent`	$261.84M	USD	Point-in-time
Accrued unbilled revenues (Note 2)	`ContractWithCustomerAssetNetCurrent`	$261.84M	USD	Point-in-time
Allowance for doubtful accounts (Note 2)	`AllowanceForDoubtfulAccountsReceivableCurrent`	$22.43M	USD	Point-in-time
Allowance for doubtful accounts (Note 2)	`AllowanceForDoubtfulAccountsReceivableCurrent`	$22.43M	USD	Point-in-time
Allowance for doubtful accounts (Note 2)	`AllowanceForDoubtfulAccountsReceivableCurrent`	$18.35M	USD	Point-in-time
Allowance for doubtful accounts (Note 2)	`AllowanceForDoubtfulAccountsReceivableCurrent`	$18.35M	USD	Point-in-time
Materials and supplies (at average cost)	`OtherInventorySupplies`	$473.85M	USD	Point-in-time
Materials and supplies (at average cost)	`OtherInventorySupplies`	$473.85M	USD	Point-in-time
Materials and supplies (at average cost)	`OtherInventorySupplies`	$444.34M	USD	Point-in-time
Materials and supplies (at average cost)	`OtherInventorySupplies`	$444.34M	USD	Point-in-time
Income tax receivable	`IncomeTaxesReceivable`	-	USD	Point-in-time
Income tax receivable	`IncomeTaxesReceivable`	-	USD	Point-in-time
Income tax receivable	`IncomeTaxesReceivable`	$332.00K	USD	Point-in-time
Income tax receivable	`IncomeTaxesReceivable`	$332.00K	USD	Point-in-time
Fossil fuel (at average cost)	`EnergyRelatedInventoryOtherFossilFuel`	$54.19M	USD	Point-in-time
Fossil fuel (at average cost)	`EnergyRelatedInventoryOtherFossilFuel`	$54.19M	USD	Point-in-time
Fossil fuel (at average cost)	`EnergyRelatedInventoryOtherFossilFuel`	$49.20M	USD	Point-in-time
Fossil fuel (at average cost)	`EnergyRelatedInventoryOtherFossilFuel`	$49.20M	USD	Point-in-time
Assets from risk management activities (Note 7)	`DerivativeInstrumentsAndHedges`	$641.00K	USD	Point-in-time
Assets from risk management activities (Note 7)	`DerivativeInstrumentsAndHedges`	$641.00K	USD	Point-in-time
Assets from risk management activities (Note 7)	`DerivativeInstrumentsAndHedges`	$6.81M	USD	Point-in-time
Assets from risk management activities (Note 7)	`DerivativeInstrumentsAndHedges`	$6.81M	USD	Point-in-time
Assets held for sale (Note 16)	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	-	USD	Point-in-time
Assets held for sale (Note 16)	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	-	USD	Point-in-time
Assets held for sale (Note 16)	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	$35.14M	USD	Point-in-time
Assets held for sale (Note 16)	`AssetsHeldForSaleNotPartOfDisposalGroupCurrent`	$35.14M	USD	Point-in-time
Deferred fuel and purchased power regulatory asset (Note 4)	`DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent`	$367.27M	USD	Point-in-time
Deferred fuel and purchased power regulatory asset (Note 4)	`DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent`	$367.27M	USD	Point-in-time
Deferred fuel and purchased power regulatory asset (Note 4)	`DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent`	$463.19M	USD	Point-in-time
Deferred fuel and purchased power regulatory asset (Note 4)	`DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent`	$463.19M	USD	Point-in-time
Other regulatory assets (Note 4)	`OtherRegulatoryAssetsCurrent`	$150.09M	USD	Point-in-time
Other regulatory assets (Note 4)	`OtherRegulatoryAssetsCurrent`	$150.09M	USD	Point-in-time
Other regulatory assets (Note 4)	`OtherRegulatoryAssetsCurrent`	$162.56M	USD	Point-in-time
Other regulatory assets (Note 4)	`OtherRegulatoryAssetsCurrent`	$162.56M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$86.76M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$86.76M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$101.42M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$101.42M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.93B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.93B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$2.26B	USD	Point-in-time
Total current assets	`AssetsCurrent`	$2.26B	USD	Point-in-time
Nuclear decommissioning trusts (Notes 11 and 12)	`DecommissioningTrustAssetsAmount`	$1.20B	USD	Point-in-time
Nuclear decommissioning trusts (Notes 11 and 12)	`DecommissioningTrustAssetsAmount`	$1.20B	USD	Point-in-time
Nuclear decommissioning trusts (Notes 11 and 12)	`DecommissioningTrustAssetsAmount`	$1.30B	USD	Point-in-time
Nuclear decommissioning trusts (Notes 11 and 12)	`DecommissioningTrustAssetsAmount`	$1.30B	USD	Point-in-time
Other special use funds (Notes 11 and 12)	`CoalReclamationAndUnionTrust`	$387.50M	USD	Point-in-time
Other special use funds (Notes 11 and 12)	`CoalReclamationAndUnionTrust`	$387.50M	USD	Point-in-time
Other special use funds (Notes 11 and 12)	`CoalReclamationAndUnionTrust`	$362.78M	USD	Point-in-time
Other special use funds (Notes 11 and 12)	`CoalReclamationAndUnionTrust`	$362.78M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$102.84M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$102.84M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$122.36M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$122.36M	USD	Point-in-time
Total investments and other assets	`TotalInvestmentsAndOtherAssets`	$1.81B	USD	Point-in-time
Total investments and other assets	`TotalInvestmentsAndOtherAssets`	$1.81B	USD	Point-in-time
Total investments and other assets	`TotalInvestmentsAndOtherAssets`	$1.67B	USD	Point-in-time
Total investments and other assets	`TotalInvestmentsAndOtherAssets`	$1.67B	USD	Point-in-time
Plant in service and held for future use	`PropertyPlantAndEquipmentGross`	$25.26B	USD	Point-in-time
Plant in service and held for future use	`PropertyPlantAndEquipmentGross`	$25.26B	USD	Point-in-time
Plant in service and held for future use	`PropertyPlantAndEquipmentGross`	$24.21B	USD	Point-in-time
Plant in service and held for future use	`PropertyPlantAndEquipmentGross`	$24.21B	USD	Point-in-time
Accumulated depreciation and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$8.88B	USD	Point-in-time
Accumulated depreciation and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$8.88B	USD	Point-in-time
Accumulated depreciation and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$8.41B	USD	Point-in-time
Accumulated depreciation and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$8.41B	USD	Point-in-time
Net	`PropertyPlantAndEquipmentNet`	$15.80B	USD	Point-in-time
Net	`PropertyPlantAndEquipmentNet`	$15.80B	USD	Point-in-time
Net	`PropertyPlantAndEquipmentNet`	$16.38B	USD	Point-in-time
Net	`PropertyPlantAndEquipmentNet`	$16.38B	USD	Point-in-time
Construction work in progress	`ConstructionWorkInProgressGross`	$1.71B	USD	Point-in-time
Construction work in progress	`ConstructionWorkInProgressGross`	$1.71B	USD	Point-in-time
Construction work in progress	`ConstructionWorkInProgressGross`	$1.72B	USD	Point-in-time
Construction work in progress	`ConstructionWorkInProgressGross`	$1.72B	USD	Point-in-time
Palo Verde sale leaseback, net of accumulated depreciation (Note 6)	`PublicUtilitiesPropertyPlantAndEquipmentSaleLeasebackNet`	$83.52M	USD	Point-in-time
Palo Verde sale leaseback, net of accumulated depreciation (Note 6)	`PublicUtilitiesPropertyPlantAndEquipmentSaleLeasebackNet`	$83.52M	USD	Point-in-time
Palo Verde sale leaseback, net of accumulated depreciation (Note 6)	`PublicUtilitiesPropertyPlantAndEquipmentSaleLeasebackNet`	$86.43M	USD	Point-in-time
Palo Verde sale leaseback, net of accumulated depreciation (Note 6)	`PublicUtilitiesPropertyPlantAndEquipmentSaleLeasebackNet`	$86.43M	USD	Point-in-time
Intangible assets, net of accumulated amortization	`IntangibleAssetsNetExcludingGoodwill`	$267.11M	USD	Point-in-time
Intangible assets, net of accumulated amortization	`IntangibleAssetsNetExcludingGoodwill`	$267.11M	USD	Point-in-time
Intangible assets, net of accumulated amortization	`IntangibleAssetsNetExcludingGoodwill`	$586.56M	USD	Point-in-time
Intangible assets, net of accumulated amortization	`IntangibleAssetsNetExcludingGoodwill`	$586.56M	USD	Point-in-time
Nuclear fuel, net of accumulated amortization	`NuclearFuelNetOfAmortization`	$99.49M	USD	Point-in-time
Nuclear fuel, net of accumulated amortization	`NuclearFuelNetOfAmortization`	$99.49M	USD	Point-in-time
Nuclear fuel, net of accumulated amortization	`NuclearFuelNetOfAmortization`	$112.14M	USD	Point-in-time
Nuclear fuel, net of accumulated amortization	`NuclearFuelNetOfAmortization`	$112.14M	USD	Point-in-time
Total property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$18.88B	USD	Point-in-time
Total property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$18.88B	USD	Point-in-time
Total property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$17.98B	USD	Point-in-time
Total property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$17.98B	USD	Point-in-time
Regulatory assets (Note 4)	`RegulatoryAssetsNoncurrent`	$1.35B	USD	Point-in-time
Regulatory assets (Note 4)	`RegulatoryAssetsNoncurrent`	$1.35B	USD	Point-in-time
Regulatory assets (Note 4)	`RegulatoryAssetsNoncurrent`	$1.39B	USD	Point-in-time
Regulatory assets (Note 4)	`RegulatoryAssetsNoncurrent`	$1.39B	USD	Point-in-time
Operating lease right-of-use assets (Note 14)	`OperatingLeaseRightOfUseAsset`	$1.60B	USD	Point-in-time
Operating lease right-of-use assets (Note 14)	`OperatingLeaseRightOfUseAsset`	$1.60B	USD	Point-in-time
Operating lease right-of-use assets (Note 14)	`OperatingLeaseRightOfUseAsset`	$1.31B	USD	Point-in-time
Operating lease right-of-use assets (Note 14)	`OperatingLeaseRightOfUseAsset`	$1.31B	USD	Point-in-time
Assets for pension and other postretirement benefits (Note 5)	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$323.44M	USD	Point-in-time
Assets for pension and other postretirement benefits (Note 5)	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$323.44M	USD	Point-in-time
Assets for pension and other postretirement benefits (Note 5)	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$351.55M	USD	Point-in-time
Assets for pension and other postretirement benefits (Note 5)	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$351.55M	USD	Point-in-time
Other	`OtherDeferredCostsNet`	$57.77M	USD	Point-in-time
Other	`OtherDeferredCostsNet`	$57.77M	USD	Point-in-time
Other	`OtherDeferredCostsNet`	$63.47M	USD	Point-in-time
Other	`OtherDeferredCostsNet`	$63.47M	USD	Point-in-time
Total deferred debits	`TotalDeferredDebits`	$3.09B	USD	Point-in-time
Total deferred debits	`TotalDeferredDebits`	$3.09B	USD	Point-in-time
Total deferred debits	`TotalDeferredDebits`	$3.35B	USD	Point-in-time
Total deferred debits	`TotalDeferredDebits`	$3.35B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$26.31B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$26.31B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$24.66B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$24.66B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$429.48M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$429.48M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$442.45M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$442.45M	USD	Point-in-time
Accrued taxes	`TaxesPayableCurrent`	$166.83M	USD	Point-in-time
Accrued taxes	`TaxesPayableCurrent`	$166.83M	USD	Point-in-time
Accrued taxes	`TaxesPayableCurrent`	$341.64M	USD	Point-in-time
Accrued taxes	`TaxesPayableCurrent`	$341.64M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$83.91M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$83.91M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$72.92M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$72.92M	USD	Point-in-time
Common dividends payable	`DividendsPayableCurrent`	$99.81M	USD	Point-in-time
Common dividends payable	`DividendsPayableCurrent`	$99.81M	USD	Point-in-time
Common dividends payable	`DividendsPayableCurrent`	-	USD	Point-in-time
Common dividends payable	`DividendsPayableCurrent`	-	USD	Point-in-time
Short-term borrowings (Note 3)	`ShortTermBorrowings`	$623.50M	USD	Point-in-time
Short-term borrowings (Note 3)	`ShortTermBorrowings`	$623.50M	USD	Point-in-time
Short-term borrowings (Note 3)	`ShortTermBorrowings`	$609.50M	USD	Point-in-time
Short-term borrowings (Note 3)	`ShortTermBorrowings`	$609.50M	USD	Point-in-time
Current maturities of long-term debt (Note 3)	`OtherLongTermDebtCurrent`	$875.00M	USD	Point-in-time
Current maturities of long-term debt (Note 3)	`OtherLongTermDebtCurrent`	$875.00M	USD	Point-in-time
Current maturities of long-term debt (Note 3)	`OtherLongTermDebtCurrent`	$1.00B	USD	Point-in-time
Current maturities of long-term debt (Note 3)	`OtherLongTermDebtCurrent`	$1.00B	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$41.98M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$41.98M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$42.04M	USD	Point-in-time
Customer deposits	`ContractWithCustomerLiabilityCurrent`	$42.04M	USD	Point-in-time
Liabilities from risk management activities (Note 7)	`DerivativeInstrumentsAndHedgesLiabilities`	$80.91M	USD	Point-in-time
Liabilities from risk management activities (Note 7)	`DerivativeInstrumentsAndHedgesLiabilities`	$80.91M	USD	Point-in-time
Liabilities from risk management activities (Note 7)	`DerivativeInstrumentsAndHedgesLiabilities`	$79.62M	USD	Point-in-time
Liabilities from risk management activities (Note 7)	`DerivativeInstrumentsAndHedgesLiabilities`	$79.62M	USD	Point-in-time
Liabilities for asset retirements (Note 15)	`AssetRetirementObligationCurrent`	$52.19M	USD	Point-in-time
Liabilities for asset retirements (Note 15)	`AssetRetirementObligationCurrent`	$52.19M	USD	Point-in-time
Liabilities for asset retirements (Note 15)	`AssetRetirementObligationCurrent`	$28.55M	USD	Point-in-time
Liabilities for asset retirements (Note 15)	`AssetRetirementObligationCurrent`	$28.55M	USD	Point-in-time
Operating lease liabilities (Note 14)	`OperatingLeaseLiabilityCurrent`	$119.08M	USD	Point-in-time
Operating lease liabilities (Note 14)	`OperatingLeaseLiabilityCurrent`	$119.08M	USD	Point-in-time
Operating lease liabilities (Note 14)	`OperatingLeaseLiabilityCurrent`	$67.88M	USD	Point-in-time
Operating lease liabilities (Note 14)	`OperatingLeaseLiabilityCurrent`	$67.88M	USD	Point-in-time
Regulatory liabilities (Note 4)	`RegulatoryLiabilityCurrent`	$243.71M	USD	Point-in-time
Regulatory liabilities (Note 4)	`RegulatoryLiabilityCurrent`	$243.71M	USD	Point-in-time
Regulatory liabilities (Note 4)	`RegulatoryLiabilityCurrent`	$209.92M	USD	Point-in-time
Regulatory liabilities (Note 4)	`RegulatoryLiabilityCurrent`	$209.92M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$193.52M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$193.52M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$182.25M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$182.25M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.89B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$2.89B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$3.20B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$3.20B	USD	Point-in-time
LONG-TERM DEBT LESS CURRENT MATURITIES (Note 3)	`LongTermDebtNoncurrent`	$8.06B	USD	Point-in-time
LONG-TERM DEBT LESS CURRENT MATURITIES (Note 3)	`LongTermDebtNoncurrent`	$8.06B	USD	Point-in-time
LONG-TERM DEBT LESS CURRENT MATURITIES (Note 3)	`LongTermDebtNoncurrent`	$7.54B	USD	Point-in-time
LONG-TERM DEBT LESS CURRENT MATURITIES (Note 3)	`LongTermDebtNoncurrent`	$7.54B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$2.42B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$2.42B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$2.45B	USD	Point-in-time
Deferred income taxes	`DeferredIncomeTaxLiabilitiesNet`	$2.45B	USD	Point-in-time
Regulatory liabilities (Note 4)	`RegulatoryLiabilityNoncurrent`	$1.97B	USD	Point-in-time
Regulatory liabilities (Note 4)	`RegulatoryLiabilityNoncurrent`	$1.97B	USD	Point-in-time
Regulatory liabilities (Note 4)	`RegulatoryLiabilityNoncurrent`	$1.81B	USD	Point-in-time
Regulatory liabilities (Note 4)	`RegulatoryLiabilityNoncurrent`	$1.81B	USD	Point-in-time
Liabilities for asset retirements (Note 15)	`AssetRetirementObligationsNoncurrent`	$937.45M	USD	Point-in-time
Liabilities for asset retirements (Note 15)	`AssetRetirementObligationsNoncurrent`	$937.45M	USD	Point-in-time
Liabilities for asset retirements (Note 15)	`AssetRetirementObligationsNoncurrent`	$1.10B	USD	Point-in-time
Liabilities for asset retirements (Note 15)	`AssetRetirementObligationsNoncurrent`	$1.10B	USD	Point-in-time
Liabilities for pension benefits (Note 5)	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$107.36M	USD	Point-in-time
Liabilities for pension benefits (Note 5)	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$107.36M	USD	Point-in-time
Liabilities for pension benefits (Note 5)	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$112.70M	USD	Point-in-time
Liabilities for pension benefits (Note 5)	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$112.70M	USD	Point-in-time
Liabilities from risk management activities (Note 7)	`DerivativeLiabilitiesNoncurrent`	$28.91M	USD	Point-in-time
Liabilities from risk management activities (Note 7)	`DerivativeLiabilitiesNoncurrent`	$28.91M	USD	Point-in-time
Liabilities from risk management activities (Note 7)	`DerivativeLiabilitiesNoncurrent`	$42.98M	USD	Point-in-time
Liabilities from risk management activities (Note 7)	`DerivativeLiabilitiesNoncurrent`	$42.98M	USD	Point-in-time
Customer advances	`ContractWithCustomerLiabilityNoncurrent`	$533.58M	USD	Point-in-time
Customer advances	`ContractWithCustomerLiabilityNoncurrent`	$533.58M	USD	Point-in-time
Customer advances	`ContractWithCustomerLiabilityNoncurrent`	$601.91M	USD	Point-in-time
Customer advances	`ContractWithCustomerLiabilityNoncurrent`	$601.91M	USD	Point-in-time
Coal mine reclamation	`RecordedUnconditionalPurchaseObligation`	$187.67M	USD	Point-in-time
Coal mine reclamation	`RecordedUnconditionalPurchaseObligation`	$187.67M	USD	Point-in-time
Coal mine reclamation	`RecordedUnconditionalPurchaseObligation`	$184.01M	USD	Point-in-time
Coal mine reclamation	`RecordedUnconditionalPurchaseObligation`	$184.01M	USD	Point-in-time
Deferred investment tax credit	`AccumulatedDeferredInvestmentTaxCredit`	$257.74M	USD	Point-in-time
Deferred investment tax credit	`AccumulatedDeferredInvestmentTaxCredit`	$257.74M	USD	Point-in-time
Deferred investment tax credit	`AccumulatedDeferredInvestmentTaxCredit`	$247.46M	USD	Point-in-time
Deferred investment tax credit	`AccumulatedDeferredInvestmentTaxCredit`	$247.46M	USD	Point-in-time
Unrecognized tax benefits	`LiabilityForUncertainTaxPositionsNoncurrent`	$33.86M	USD	Point-in-time
Unrecognized tax benefits	`LiabilityForUncertainTaxPositionsNoncurrent`	$33.86M	USD	Point-in-time
Unrecognized tax benefits	`LiabilityForUncertainTaxPositionsNoncurrent`	$44.56M	USD	Point-in-time
Unrecognized tax benefits	`LiabilityForUncertainTaxPositionsNoncurrent`	$44.56M	USD	Point-in-time
Operating lease liabilities (Note 14)	`OperatingLeaseLiabilityNoncurrent`	$1.52B	USD	Point-in-time
Operating lease liabilities (Note 14)	`OperatingLeaseLiabilityNoncurrent`	$1.52B	USD	Point-in-time
Operating lease liabilities (Note 14)	`OperatingLeaseLiabilityNoncurrent`	$1.21B	USD	Point-in-time
Operating lease liabilities (Note 14)	`OperatingLeaseLiabilityNoncurrent`	$1.21B	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$251.47M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$251.47M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$232.13M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$232.13M	USD	Point-in-time
Total deferred credits and other	`DeferredCreditsAndOtherLiabilities`	$8.33B	USD	Point-in-time
Total deferred credits and other	`DeferredCreditsAndOtherLiabilities`	$8.33B	USD	Point-in-time
Total deferred credits and other	`DeferredCreditsAndOtherLiabilities`	$7.95B	USD	Point-in-time
Total deferred credits and other	`DeferredCreditsAndOtherLiabilities`	$7.95B	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (Note 8)	`CommitmentsAndContingencies`	-	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (Note 8)	`CommitmentsAndContingencies`	-	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (Note 8)	`CommitmentsAndContingencies`	-	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (Note 8)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock, no par value; authorized 150,000,000 shares, 113,735,926 and 113,537,689 issued at respective dates	`CommonStockValue`	$2.75B	USD	Point-in-time
Common stock, no par value; authorized 150,000,000 shares, 113,735,926 and 113,537,689 issued at respective dates	`CommonStockValue`	$2.75B	USD	Point-in-time
Common stock, no par value; authorized 150,000,000 shares, 113,735,926 and 113,537,689 issued at respective dates	`CommonStockValue`	$2.77B	USD	Point-in-time
Common stock, no par value; authorized 150,000,000 shares, 113,735,926 and 113,537,689 issued at respective dates	`CommonStockValue`	$2.77B	USD	Point-in-time
Treasury stock at cost; 101,641 and 113,272 shares at respective dates	`TreasuryStockValue`	$7.19M	USD	Point-in-time
Treasury stock at cost; 101,641 and 113,272 shares at respective dates	`TreasuryStockValue`	$7.19M	USD	Point-in-time
Treasury stock at cost; 101,641 and 113,272 shares at respective dates	`TreasuryStockValue`	$8.19M	USD	Point-in-time
Treasury stock at cost; 101,641 and 113,272 shares at respective dates	`TreasuryStockValue`	$8.19M	USD	Point-in-time
Total common stock	`CommonStockValueCommonAndTreasury`	$2.77B	USD	Point-in-time
Total common stock	`CommonStockValueCommonAndTreasury`	$2.77B	USD	Point-in-time
Total common stock	`CommonStockValueCommonAndTreasury`	$2.74B	USD	Point-in-time
Total common stock	`CommonStockValueCommonAndTreasury`	$2.74B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$3.47B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$3.47B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$3.88B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$3.88B	USD	Point-in-time
Accumulated other comprehensive loss (Note 13)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-32.81M	USD	Point-in-time
Accumulated other comprehensive loss (Note 13)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-32.81M	USD	Point-in-time
Accumulated other comprehensive loss (Note 13)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-33.14M	USD	Point-in-time
Accumulated other comprehensive loss (Note 13)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-33.14M	USD	Point-in-time
Total shareholder equity	`StockholdersEquity`	$6.18B	USD	Point-in-time
Total shareholder equity	`StockholdersEquity`	$6.18B	USD	Point-in-time
Total shareholder equity	`StockholdersEquity`	$6.62B	USD	Point-in-time
Total shareholder equity	`StockholdersEquity`	$6.62B	USD	Point-in-time
Noncontrolling interests (Note 6)	`MinorityInterest`	$109.49M	USD	Point-in-time
Noncontrolling interests (Note 6)	`MinorityInterest`	$109.49M	USD	Point-in-time
Noncontrolling interests (Note 6)	`MinorityInterest`	$107.20M	USD	Point-in-time
Noncontrolling interests (Note 6)	`MinorityInterest`	$107.20M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.16B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.16B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.49B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.49B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.28B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.28B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.32B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.32B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.73B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.73B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$24.66B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$24.66B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$26.31B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$26.31B	USD	Point-in-time

Income Statement 200 line items

Line Item	Tag	Value	Unit	Period
OPERATING REVENUES (Note 2)	`Revenues`	$4.03B	USD	3 Qtrs
OPERATING REVENUES (Note 2)	`Revenues`	$4.03B	USD	3 Qtrs
OPERATING REVENUES (Note 2)	`Revenues`	$1.77B	USD	1 Quarter
OPERATING REVENUES (Note 2)	`Revenues`	$1.77B	USD	1 Quarter
OPERATING REVENUES (Note 2)	`Revenues`	$1.64B	USD	1 Quarter
OPERATING REVENUES (Note 2)	`Revenues`	$1.64B	USD	1 Quarter
OPERATING REVENUES (Note 2)	`Revenues`	$3.70B	USD	3 Qtrs
OPERATING REVENUES (Note 2)	`Revenues`	$3.70B	USD	3 Qtrs
Fuel and purchased power	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$1.42B	USD	3 Qtrs
Fuel and purchased power	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$1.42B	USD	3 Qtrs
Fuel and purchased power	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$631.38M	USD	1 Quarter
Fuel and purchased power	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$631.38M	USD	1 Quarter
Fuel and purchased power	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$614.52M	USD	1 Quarter
Fuel and purchased power	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$614.52M	USD	1 Quarter
Fuel and purchased power	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$1.43B	USD	3 Qtrs
Fuel and purchased power	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$1.43B	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$250.02M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$250.02M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$777.34M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$777.34M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$308.06M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$308.06M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$837.90M	USD	3 Qtrs
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$837.90M	USD	3 Qtrs
Depreciation and amortization	`CostOfGoodsAndServicesSoldDepreciationAndAmortization`	$664.76M	USD	3 Qtrs
Depreciation and amortization	`CostOfGoodsAndServicesSoldDepreciationAndAmortization`	$664.76M	USD	3 Qtrs
Depreciation and amortization	`CostOfGoodsAndServicesSoldDepreciationAndAmortization`	$229.45M	USD	1 Quarter
Depreciation and amortization	`CostOfGoodsAndServicesSoldDepreciationAndAmortization`	$229.45M	USD	1 Quarter
Depreciation and amortization	`CostOfGoodsAndServicesSoldDepreciationAndAmortization`	$590.45M	USD	3 Qtrs
Depreciation and amortization	`CostOfGoodsAndServicesSoldDepreciationAndAmortization`	$590.45M	USD	3 Qtrs
Depreciation and amortization	`CostOfGoodsAndServicesSoldDepreciationAndAmortization`	$203.44M	USD	1 Quarter
Depreciation and amortization	`CostOfGoodsAndServicesSoldDepreciationAndAmortization`	$203.44M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$52.78M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$52.78M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$167.95M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$167.95M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$170.59M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$170.59M	USD	3 Qtrs
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$53.17M	USD	1 Quarter
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$53.17M	USD	1 Quarter
Other expense	`OtherCostAndExpenseOperating`	$2.31M	USD	3 Qtrs
Other expense	`OtherCostAndExpenseOperating`	$2.31M	USD	3 Qtrs
Other expense	`OtherCostAndExpenseOperating`	$145.00K	USD	1 Quarter
Other expense	`OtherCostAndExpenseOperating`	$145.00K	USD	1 Quarter
Other expense	`OtherCostAndExpenseOperating`	$350.00K	USD	1 Quarter
Other expense	`OtherCostAndExpenseOperating`	$350.00K	USD	1 Quarter
Other expense	`OtherCostAndExpenseOperating`	$1.65M	USD	3 Qtrs
Other expense	`OtherCostAndExpenseOperating`	$1.65M	USD	3 Qtrs
Total	`CostsAndExpenses`	$1.22B	USD	1 Quarter
Total	`CostsAndExpenses`	$1.22B	USD	1 Quarter
Total	`CostsAndExpenses`	$1.12B	USD	1 Quarter
Total	`CostsAndExpenses`	$1.12B	USD	1 Quarter
Total	`CostsAndExpenses`	$3.10B	USD	3 Qtrs
Total	`CostsAndExpenses`	$3.10B	USD	3 Qtrs
Total	`CostsAndExpenses`	$2.95B	USD	3 Qtrs
Total	`CostsAndExpenses`	$2.95B	USD	3 Qtrs
OPERATING INCOME	`OperatingIncomeLoss`	$750.26M	USD	3 Qtrs
OPERATING INCOME	`OperatingIncomeLoss`	$750.26M	USD	3 Qtrs
OPERATING INCOME	`OperatingIncomeLoss`	$927.52M	USD	3 Qtrs
OPERATING INCOME	`OperatingIncomeLoss`	$927.52M	USD	3 Qtrs
OPERATING INCOME	`OperatingIncomeLoss`	$546.99M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$546.99M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$516.26M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$516.26M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$9.59M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$9.59M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$11.98M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$11.98M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$40.07M	USD	3 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$40.07M	USD	3 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$28.79M	USD	3 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$28.79M	USD	3 Qtrs
Pension and other postretirement non-service credits - net (Note 5)	`PensionAndOtherPostretirementBenefitExpense`	$-36.63M	USD	3 Qtrs
Pension and other postretirement non-service credits - net (Note 5)	`PensionAndOtherPostretirementBenefitExpense`	$-36.63M	USD	3 Qtrs
Pension and other postretirement non-service credits - net (Note 5)	`PensionAndOtherPostretirementBenefitExpense`	$-30.51M	USD	3 Qtrs
Pension and other postretirement non-service credits - net (Note 5)	`PensionAndOtherPostretirementBenefitExpense`	$-30.51M	USD	3 Qtrs
Pension and other postretirement non-service credits - net (Note 5)	`PensionAndOtherPostretirementBenefitExpense`	$-12.19M	USD	1 Quarter
Pension and other postretirement non-service credits - net (Note 5)	`PensionAndOtherPostretirementBenefitExpense`	$-12.19M	USD	1 Quarter
Pension and other postretirement non-service credits - net (Note 5)	`PensionAndOtherPostretirementBenefitExpense`	$-10.17M	USD	1 Quarter
Pension and other postretirement non-service credits - net (Note 5)	`PensionAndOtherPostretirementBenefitExpense`	$-10.17M	USD	1 Quarter
Other income (Note 9)	`OtherNonoperatingIncome`	$15.94M	USD	1 Quarter
Other income (Note 9)	`OtherNonoperatingIncome`	$15.94M	USD	1 Quarter
Other income (Note 9)	`OtherNonoperatingIncome`	$43.23M	USD	3 Qtrs
Other income (Note 9)	`OtherNonoperatingIncome`	$43.23M	USD	3 Qtrs
Other income (Note 9)	`OtherNonoperatingIncome`	$28.42M	USD	3 Qtrs
Other income (Note 9)	`OtherNonoperatingIncome`	$28.42M	USD	3 Qtrs
Other income (Note 9)	`OtherNonoperatingIncome`	$6.77M	USD	1 Quarter
Other income (Note 9)	`OtherNonoperatingIncome`	$6.77M	USD	1 Quarter
Other expense (Note 9)	`OtherNonoperatingExpense`	$4.01M	USD	1 Quarter
Other expense (Note 9)	`OtherNonoperatingExpense`	$4.01M	USD	1 Quarter
Other expense (Note 9)	`OtherNonoperatingExpense`	$14.58M	USD	3 Qtrs
Other expense (Note 9)	`OtherNonoperatingExpense`	$14.58M	USD	3 Qtrs
Other expense (Note 9)	`OtherNonoperatingExpense`	$6.97M	USD	1 Quarter
Other expense (Note 9)	`OtherNonoperatingExpense`	$6.97M	USD	1 Quarter
Other expense (Note 9)	`OtherNonoperatingExpense`	$15.92M	USD	3 Qtrs
Other expense (Note 9)	`OtherNonoperatingExpense`	$15.92M	USD	3 Qtrs
Total	`NonoperatingIncomeExpense`	$94.08M	USD	3 Qtrs
Total	`NonoperatingIncomeExpense`	$94.08M	USD	3 Qtrs
Total	`NonoperatingIncomeExpense`	$31.12M	USD	1 Quarter
Total	`NonoperatingIncomeExpense`	$31.12M	USD	1 Quarter
Total	`NonoperatingIncomeExpense`	$24.54M	USD	1 Quarter
Total	`NonoperatingIncomeExpense`	$24.54M	USD	1 Quarter
Total	`NonoperatingIncomeExpense`	$83.09M	USD	3 Qtrs
Total	`NonoperatingIncomeExpense`	$83.09M	USD	3 Qtrs
Interest charges	`InterestCostsIncurred`	$96.91M	USD	1 Quarter
Interest charges	`InterestCostsIncurred`	$96.91M	USD	1 Quarter
Interest charges	`InterestCostsIncurred`	$109.92M	USD	1 Quarter
Interest charges	`InterestCostsIncurred`	$109.92M	USD	1 Quarter
Interest charges	`InterestCostsIncurred`	$318.59M	USD	3 Qtrs
Interest charges	`InterestCostsIncurred`	$318.59M	USD	3 Qtrs
Interest charges	`InterestCostsIncurred`	$278.86M	USD	3 Qtrs
Interest charges	`InterestCostsIncurred`	$278.86M	USD	3 Qtrs
Allowance for borrowed funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$11.90M	USD	1 Quarter
Allowance for borrowed funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$11.90M	USD	1 Quarter
Allowance for borrowed funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$36.08M	USD	3 Qtrs
Allowance for borrowed funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$36.08M	USD	3 Qtrs
Allowance for borrowed funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$9.09M	USD	1 Quarter
Allowance for borrowed funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$9.09M	USD	1 Quarter
Allowance for borrowed funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$34.13M	USD	3 Qtrs
Allowance for borrowed funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$34.13M	USD	3 Qtrs
Total	`InterestExpenseNonoperating`	$282.51M	USD	3 Qtrs
Total	`InterestExpenseNonoperating`	$282.51M	USD	3 Qtrs
Total	`InterestExpenseNonoperating`	$98.02M	USD	1 Quarter
Total	`InterestExpenseNonoperating`	$98.02M	USD	1 Quarter
Total	`InterestExpenseNonoperating`	$244.73M	USD	3 Qtrs
Total	`InterestExpenseNonoperating`	$244.73M	USD	3 Qtrs
Total	`InterestExpenseNonoperating`	$87.82M	USD	1 Quarter
Total	`InterestExpenseNonoperating`	$87.82M	USD	1 Quarter
Income Before Income Taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$588.62M	USD	3 Qtrs
Income Before Income Taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$588.62M	USD	3 Qtrs
Income Before Income Taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$473.50M	USD	1 Quarter
Income Before Income Taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$473.50M	USD	1 Quarter
Income Before Income Taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$459.56M	USD	1 Quarter
Income Before Income Taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$459.56M	USD	1 Quarter
Income Before Income Taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$739.09M	USD	3 Qtrs
Income Before Income Taxes	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$739.09M	USD	3 Qtrs
Income Taxes	`IncomeTaxExpenseBenefit`	$57.05M	USD	1 Quarter
Income Taxes	`IncomeTaxExpenseBenefit`	$57.05M	USD	1 Quarter
Income Taxes	`IncomeTaxExpenseBenefit`	$110.54M	USD	3 Qtrs
Income Taxes	`IncomeTaxExpenseBenefit`	$110.54M	USD	3 Qtrs
Income Taxes	`IncomeTaxExpenseBenefit`	$74.23M	USD	1 Quarter
Income Taxes	`IncomeTaxExpenseBenefit`	$74.23M	USD	1 Quarter
Income Taxes	`IncomeTaxExpenseBenefit`	$74.12M	USD	3 Qtrs
Income Taxes	`IncomeTaxExpenseBenefit`	$74.12M	USD	3 Qtrs
Net Income	`ProfitLoss`	$399.27M	USD	1 Quarter
Net Income	`ProfitLoss`	$399.27M	USD	1 Quarter
Net Income	`ProfitLoss`	$628.55M	USD	3 Qtrs
Net Income	`ProfitLoss`	$628.55M	USD	3 Qtrs
Net Income	`ProfitLoss`	$514.50M	USD	3 Qtrs
Net Income	`ProfitLoss`	$514.50M	USD	3 Qtrs
Net Income	`ProfitLoss`	$402.52M	USD	1 Quarter
Net Income	`ProfitLoss`	$402.52M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests (Note 6)	`NetIncomeLossAttributableToNoncontrollingInterest`	$4.31M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests (Note 6)	`NetIncomeLossAttributableToNoncontrollingInterest`	$4.31M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests (Note 6)	`NetIncomeLossAttributableToNoncontrollingInterest`	$12.92M	USD	3 Qtrs
Less: Net income attributable to noncontrolling interests (Note 6)	`NetIncomeLossAttributableToNoncontrollingInterest`	$12.92M	USD	3 Qtrs
Less: Net income attributable to noncontrolling interests (Note 6)	`NetIncomeLossAttributableToNoncontrollingInterest`	$12.92M	USD	3 Qtrs
Less: Net income attributable to noncontrolling interests (Note 6)	`NetIncomeLossAttributableToNoncontrollingInterest`	$12.92M	USD	3 Qtrs
Less: Net income attributable to noncontrolling interests (Note 6)	`NetIncomeLossAttributableToNoncontrollingInterest`	$4.31M	USD	1 Quarter
Less: Net income attributable to noncontrolling interests (Note 6)	`NetIncomeLossAttributableToNoncontrollingInterest`	$4.31M	USD	1 Quarter
Net Income Attributable to Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$501.58M	USD	3 Qtrs
Net Income Attributable to Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$501.58M	USD	3 Qtrs
Net Income Attributable to Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$615.63M	USD	3 Qtrs
Net Income Attributable to Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$615.63M	USD	3 Qtrs
Net Income Attributable to Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$394.97M	USD	1 Quarter
Net Income Attributable to Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$394.97M	USD	1 Quarter
Net Income Attributable to Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$398.21M	USD	1 Quarter
Net Income Attributable to Common Shareholders	`NetIncomeLossAvailableToCommonStockholdersBasic`	$398.21M	USD	1 Quarter
Weighted-average common shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	113.68M	shares	3 Qtrs
Weighted-average common shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	113.68M	shares	3 Qtrs
Weighted-average common shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	113.46M	shares	1 Quarter
Weighted-average common shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	113.46M	shares	1 Quarter
Weighted-average common shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	113.73M	shares	1 Quarter
Weighted-average common shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	113.73M	shares	1 Quarter
Weighted-average common shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	113.41M	shares	3 Qtrs
Weighted-average common shares outstanding - basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	113.41M	shares	3 Qtrs
Weighted-average common shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	113.84M	shares	1 Quarter
Weighted-average common shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	113.84M	shares	1 Quarter
Weighted-average common shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	117.12M	shares	1 Quarter
Weighted-average common shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	117.12M	shares	1 Quarter
Weighted-average common shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	115.72M	shares	3 Qtrs
Weighted-average common shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	115.72M	shares	3 Qtrs
Weighted-average common shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	113.72M	shares	3 Qtrs
Weighted-average common shares outstanding - diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	113.72M	shares	3 Qtrs
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$5.42	USD	3 Qtrs
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$5.42	USD	3 Qtrs
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$4.42	USD	3 Qtrs
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$4.42	USD	3 Qtrs
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$3.47	USD	1 Quarter
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$3.47	USD	1 Quarter
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$3.51	USD	1 Quarter
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$3.51	USD	1 Quarter
Net income attributable to common shareholders - diluted (in dollars per share)	`EarningsPerShareDiluted`	$4.41	USD	3 Qtrs
Net income attributable to common shareholders - diluted (in dollars per share)	`EarningsPerShareDiluted`	$4.41	USD	3 Qtrs
Net income attributable to common shareholders - diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.37	USD	1 Quarter
Net income attributable to common shareholders - diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.37	USD	1 Quarter
Net income attributable to common shareholders - diluted (in dollars per share)	`EarningsPerShareDiluted`	$5.32	USD	3 Qtrs
Net income attributable to common shareholders - diluted (in dollars per share)	`EarningsPerShareDiluted`	$5.32	USD	3 Qtrs
Net income attributable to common shareholders - diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.50	USD	1 Quarter
Net income attributable to common shareholders - diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.50	USD	1 Quarter

Cash Flow Statement 196 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$399.27M	USD	1 Quarter
Net income	`ProfitLoss`	$399.27M	USD	1 Quarter
Net income	`ProfitLoss`	$628.55M	USD	3 Qtrs
Net income	`ProfitLoss`	$628.55M	USD	3 Qtrs
Net income	`ProfitLoss`	$514.50M	USD	3 Qtrs
Net income	`ProfitLoss`	$514.50M	USD	3 Qtrs
Net income	`ProfitLoss`	$402.52M	USD	1 Quarter
Net income	`ProfitLoss`	$402.52M	USD	1 Quarter
Gain on sale relating to BCE	`DisposalGroupNotDiscontinuedOperationGainLossOnDisposal`	$22.99M	USD	3 Qtrs
Gain on sale relating to BCE	`DisposalGroupNotDiscontinuedOperationGainLossOnDisposal`	$22.99M	USD	3 Qtrs
Gain on sale relating to BCE	`DisposalGroupNotDiscontinuedOperationGainLossOnDisposal`	$6.42M	USD	3 Qtrs
Gain on sale relating to BCE	`DisposalGroupNotDiscontinuedOperationGainLossOnDisposal`	$6.42M	USD	3 Qtrs
Depreciation and amortization including nuclear fuel	`DepreciationDepletionAndAmortization`	$711.59M	USD	3 Qtrs
Depreciation and amortization including nuclear fuel	`DepreciationDepletionAndAmortization`	$711.59M	USD	3 Qtrs
Depreciation and amortization including nuclear fuel	`DepreciationDepletionAndAmortization`	$636.22M	USD	3 Qtrs
Depreciation and amortization including nuclear fuel	`DepreciationDepletionAndAmortization`	$636.22M	USD	3 Qtrs
Deferred fuel and purchased power	`IncreaseDecreaseInRegulatoryClauseRevenue`	$-244.11M	USD	3 Qtrs
Deferred fuel and purchased power	`IncreaseDecreaseInRegulatoryClauseRevenue`	$-244.11M	USD	3 Qtrs
Deferred fuel and purchased power	`IncreaseDecreaseInRegulatoryClauseRevenue`	$-486.38M	USD	3 Qtrs
Deferred fuel and purchased power	`IncreaseDecreaseInRegulatoryClauseRevenue`	$-486.38M	USD	3 Qtrs
Deferred fuel and purchased power amortization	`IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization`	$420.28M	USD	3 Qtrs
Deferred fuel and purchased power amortization	`IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization`	$420.28M	USD	3 Qtrs
Deferred fuel and purchased power amortization	`IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization`	$340.03M	USD	3 Qtrs
Deferred fuel and purchased power amortization	`IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization`	$340.03M	USD	3 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$9.59M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$9.59M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$11.98M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$11.98M	USD	1 Quarter
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$40.07M	USD	3 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$40.07M	USD	3 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$28.79M	USD	3 Qtrs
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$28.79M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-13.35M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-13.35M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-35.26M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-35.26M	USD	3 Qtrs
Deferred investment tax credit	`DeferredInvestmentTaxCreditExpense`	$-10.29M	USD	3 Qtrs
Deferred investment tax credit	`DeferredInvestmentTaxCreditExpense`	$-10.29M	USD	3 Qtrs
Deferred investment tax credit	`DeferredInvestmentTaxCreditExpense`	$73.00M	USD	3 Qtrs
Deferred investment tax credit	`DeferredInvestmentTaxCreditExpense`	$73.00M	USD	3 Qtrs
Change in derivative instruments fair value	`UnrealizedGainLossOnDerivatives`	$778.00K	USD	3 Qtrs
Change in derivative instruments fair value	`UnrealizedGainLossOnDerivatives`	$778.00K	USD	3 Qtrs
Change in derivative instruments fair value	`UnrealizedGainLossOnDerivatives`	-	USD	3 Qtrs
Change in derivative instruments fair value	`UnrealizedGainLossOnDerivatives`	-	USD	3 Qtrs
Stock compensation	`ShareBasedCompensation`	$16.94M	USD	3 Qtrs
Stock compensation	`ShareBasedCompensation`	$16.94M	USD	3 Qtrs
Stock compensation	`ShareBasedCompensation`	$12.30M	USD	3 Qtrs
Stock compensation	`ShareBasedCompensation`	$12.30M	USD	3 Qtrs
Customer and other receivables	`IncreaseDecreaseInAccountsAndNotesReceivable`	$330.87M	USD	3 Qtrs
Customer and other receivables	`IncreaseDecreaseInAccountsAndNotesReceivable`	$330.87M	USD	3 Qtrs
Customer and other receivables	`IncreaseDecreaseInAccountsAndNotesReceivable`	$214.29M	USD	3 Qtrs
Customer and other receivables	`IncreaseDecreaseInAccountsAndNotesReceivable`	$214.29M	USD	3 Qtrs
Accrued unbilled revenues	`IncreaseDecreaseInContractWithCustomerAsset`	$62.23M	USD	3 Qtrs
Accrued unbilled revenues	`IncreaseDecreaseInContractWithCustomerAsset`	$62.23M	USD	3 Qtrs
Accrued unbilled revenues	`IncreaseDecreaseInContractWithCustomerAsset`	$94.29M	USD	3 Qtrs
Accrued unbilled revenues	`IncreaseDecreaseInContractWithCustomerAsset`	$94.29M	USD	3 Qtrs
Materials, supplies and fossil fuel	`IncreaseDecreaseInInventories`	$34.49M	USD	3 Qtrs
Materials, supplies and fossil fuel	`IncreaseDecreaseInInventories`	$34.49M	USD	3 Qtrs
Materials, supplies and fossil fuel	`IncreaseDecreaseInInventories`	$43.19M	USD	3 Qtrs
Materials, supplies and fossil fuel	`IncreaseDecreaseInInventories`	$43.19M	USD	3 Qtrs
Income tax receivable	`IncreaseDecreaseInIncomeTaxesReceivable`	$-14.09M	USD	3 Qtrs
Income tax receivable	`IncreaseDecreaseInIncomeTaxesReceivable`	$-14.09M	USD	3 Qtrs
Income tax receivable	`IncreaseDecreaseInIncomeTaxesReceivable`	$-332.00K	USD	3 Qtrs
Income tax receivable	`IncreaseDecreaseInIncomeTaxesReceivable`	$-332.00K	USD	3 Qtrs
Other current assets	`IncreaseDecreaseInPrepaidExpense`	$12.00M	USD	3 Qtrs
Other current assets	`IncreaseDecreaseInPrepaidExpense`	$12.00M	USD	3 Qtrs
Other current assets	`IncreaseDecreaseInPrepaidExpense`	$26.06M	USD	3 Qtrs
Other current assets	`IncreaseDecreaseInPrepaidExpense`	$26.06M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$24.96M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$24.96M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-79.60M	USD	3 Qtrs
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-79.60M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$174.81M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$174.81M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$101.02M	USD	3 Qtrs
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$101.02M	USD	3 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$74.18M	USD	3 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$74.18M	USD	3 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$19.75M	USD	3 Qtrs
Other current liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$19.75M	USD	3 Qtrs
Change in long-term regulatory assets	`IncreaseDecreaseInOtherRegulatoryAssets`	$-32.13M	USD	3 Qtrs
Change in long-term regulatory assets	`IncreaseDecreaseInOtherRegulatoryAssets`	$-32.13M	USD	3 Qtrs
Change in long-term regulatory assets	`IncreaseDecreaseInOtherRegulatoryAssets`	$-36.02M	USD	3 Qtrs
Change in long-term regulatory assets	`IncreaseDecreaseInOtherRegulatoryAssets`	$-36.02M	USD	3 Qtrs
Change in long-term regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$43.45M	USD	3 Qtrs
Change in long-term regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$43.45M	USD	3 Qtrs
Change in long-term regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$-27.30M	USD	3 Qtrs
Change in long-term regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$-27.30M	USD	3 Qtrs
Change in other long-term assets	`IncreaseDecreaseInOtherOperatingAssets`	$126.38M	USD	3 Qtrs
Change in other long-term assets	`IncreaseDecreaseInOtherOperatingAssets`	$126.38M	USD	3 Qtrs
Change in other long-term assets	`IncreaseDecreaseInOtherOperatingAssets`	$107.92M	USD	3 Qtrs
Change in other long-term assets	`IncreaseDecreaseInOtherOperatingAssets`	$107.92M	USD	3 Qtrs
Change in operating lease assets	`IncreaseDecreaseInOperatingLeaseRightOfUseAsset`	$-94.77M	USD	3 Qtrs
Change in operating lease assets	`IncreaseDecreaseInOperatingLeaseRightOfUseAsset`	$-94.77M	USD	3 Qtrs
Change in operating lease assets	`IncreaseDecreaseInOperatingLeaseRightOfUseAsset`	$-89.84M	USD	3 Qtrs
Change in operating lease assets	`IncreaseDecreaseInOperatingLeaseRightOfUseAsset`	$-89.84M	USD	3 Qtrs
Change in other long-term liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$101.17M	USD	3 Qtrs
Change in other long-term liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$101.17M	USD	3 Qtrs
Change in other long-term liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$49.69M	USD	3 Qtrs
Change in other long-term liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$49.69M	USD	3 Qtrs
Change in operating lease liabilities	`IncreaseDecreaseInOperatingLeaseLiability`	$-68.83M	USD	3 Qtrs
Change in operating lease liabilities	`IncreaseDecreaseInOperatingLeaseLiability`	$-68.83M	USD	3 Qtrs
Change in operating lease liabilities	`IncreaseDecreaseInOperatingLeaseLiability`	$-89.48M	USD	3 Qtrs
Change in operating lease liabilities	`IncreaseDecreaseInOperatingLeaseLiability`	$-89.48M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$833.90M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$833.90M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.17B	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.17B	USD	3 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$1.72B	USD	3 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$1.72B	USD	3 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$1.31B	USD	3 Qtrs
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$1.31B	USD	3 Qtrs
Contributions in aid of construction	`ProceedsFromContributionInAidOfConstruction`	$112.76M	USD	3 Qtrs
Contributions in aid of construction	`ProceedsFromContributionInAidOfConstruction`	$112.76M	USD	3 Qtrs
Contributions in aid of construction	`ProceedsFromContributionInAidOfConstruction`	$235.86M	USD	3 Qtrs
Contributions in aid of construction	`ProceedsFromContributionInAidOfConstruction`	$235.86M	USD	3 Qtrs
Proceeds from sale relating to BCE	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$17.50M	USD	3 Qtrs
Proceeds from sale relating to BCE	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$17.50M	USD	3 Qtrs
Proceeds from sale relating to BCE	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$64.32M	USD	3 Qtrs
Proceeds from sale relating to BCE	`ProceedsFromDivestitureOfBusinessesNetOfCashDivested`	$64.32M	USD	3 Qtrs
Allowance for borrowed funds used during construction	`AllowanceForFundsUsedDuringConstructionInvestingActivities`	$-36.08M	USD	3 Qtrs
Allowance for borrowed funds used during construction	`AllowanceForFundsUsedDuringConstructionInvestingActivities`	$-36.08M	USD	3 Qtrs
Allowance for borrowed funds used during construction	`AllowanceForFundsUsedDuringConstructionInvestingActivities`	$-34.13M	USD	3 Qtrs
Allowance for borrowed funds used during construction	`AllowanceForFundsUsedDuringConstructionInvestingActivities`	$-34.13M	USD	3 Qtrs
Proceeds from nuclear decommissioning trusts sales and other special use funds	`ProceedsFromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds`	$1.14B	USD	3 Qtrs
Proceeds from nuclear decommissioning trusts sales and other special use funds	`ProceedsFromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds`	$1.14B	USD	3 Qtrs
Proceeds from nuclear decommissioning trusts sales and other special use funds	`ProceedsFromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds`	$1.17B	USD	3 Qtrs
Proceeds from nuclear decommissioning trusts sales and other special use funds	`ProceedsFromDecommissioningTrustFundAssetsAndOtherSpecialUseFunds`	$1.17B	USD	3 Qtrs
Investment in nuclear decommissioning trusts and other special use funds	`PaymentsToAcquireInvestmentsToBeHeldInDecommissioningTrustFundAndOtherSpecialUseFunds`	$1.18B	USD	3 Qtrs
Investment in nuclear decommissioning trusts and other special use funds	`PaymentsToAcquireInvestmentsToBeHeldInDecommissioningTrustFundAndOtherSpecialUseFunds`	$1.18B	USD	3 Qtrs
Investment in nuclear decommissioning trusts and other special use funds	`PaymentsToAcquireInvestmentsToBeHeldInDecommissioningTrustFundAndOtherSpecialUseFunds`	$1.15B	USD	3 Qtrs
Investment in nuclear decommissioning trusts and other special use funds	`PaymentsToAcquireInvestmentsToBeHeldInDecommissioningTrustFundAndOtherSpecialUseFunds`	$1.15B	USD	3 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$5.69M	USD	3 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$5.69M	USD	3 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$1.79M	USD	3 Qtrs
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$1.79M	USD	3 Qtrs
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.24B	USD	3 Qtrs
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.24B	USD	3 Qtrs
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.47B	USD	3 Qtrs
Net cash used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.47B	USD	3 Qtrs
Issuance of long-term debt	`ProceedsFromIssuanceOfOtherLongTermDebt`	$1.31B	USD	3 Qtrs
Issuance of long-term debt	`ProceedsFromIssuanceOfOtherLongTermDebt`	$1.31B	USD	3 Qtrs
Issuance of long-term debt	`ProceedsFromIssuanceOfOtherLongTermDebt`	$689.35M	USD	3 Qtrs
Issuance of long-term debt	`ProceedsFromIssuanceOfOtherLongTermDebt`	$689.35M	USD	3 Qtrs
Repayment of long-term debt	`RepaymentsOfOtherLongTermDebt`	$32.74M	USD	3 Qtrs
Repayment of long-term debt	`RepaymentsOfOtherLongTermDebt`	$32.74M	USD	3 Qtrs
Repayment of long-term debt	`RepaymentsOfOtherLongTermDebt`	$675.00M	USD	3 Qtrs
Repayment of long-term debt	`RepaymentsOfOtherLongTermDebt`	$675.00M	USD	3 Qtrs
Short-term borrowing and (repayments) - net	`ProceedsFromRepaymentsOfShortTermDebtNet`	$14.00M	USD	3 Qtrs
Short-term borrowing and (repayments) - net	`ProceedsFromRepaymentsOfShortTermDebtNet`	$14.00M	USD	3 Qtrs
Short-term borrowing and (repayments) - net	`ProceedsFromRepaymentsOfShortTermDebtNet`	$56.40M	USD	3 Qtrs
Short-term borrowing and (repayments) - net	`ProceedsFromRepaymentsOfShortTermDebtNet`	$56.40M	USD	3 Qtrs
Short-term debt borrowings under term loan facility	`ProceedsFromIssuanceOfSecuredDebt`	-	USD	3 Qtrs
Short-term debt borrowings under term loan facility	`ProceedsFromIssuanceOfSecuredDebt`	-	USD	3 Qtrs
Short-term debt borrowings under term loan facility	`ProceedsFromIssuanceOfSecuredDebt`	$350.00M	USD	3 Qtrs
Short-term debt borrowings under term loan facility	`ProceedsFromIssuanceOfSecuredDebt`	$350.00M	USD	3 Qtrs
Short-term debt repayments under term loan facility	`RepaymentsOfSecuredDebt`	-	USD	3 Qtrs
Short-term debt repayments under term loan facility	`RepaymentsOfSecuredDebt`	-	USD	3 Qtrs
Short-term debt repayments under term loan facility	`RepaymentsOfSecuredDebt`	$350.00M	USD	3 Qtrs
Short-term debt repayments under term loan facility	`RepaymentsOfSecuredDebt`	$350.00M	USD	3 Qtrs
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$294.59M	USD	3 Qtrs
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$294.59M	USD	3 Qtrs
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$288.46M	USD	3 Qtrs
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$288.46M	USD	3 Qtrs
Common stock equity issuance and (purchases) - net	`PaymentsForRepurchaseOfCommonStock`	$1.64M	USD	3 Qtrs
Common stock equity issuance and (purchases) - net	`PaymentsForRepurchaseOfCommonStock`	$1.64M	USD	3 Qtrs
Common stock equity issuance and (purchases) - net	`PaymentsForRepurchaseOfCommonStock`	$3.80M	USD	3 Qtrs
Common stock equity issuance and (purchases) - net	`PaymentsForRepurchaseOfCommonStock`	$3.80M	USD	3 Qtrs
Distributions to noncontrolling interests for capital activities	`PaymentsToMinorityShareholders`	$10.63M	USD	3 Qtrs
Distributions to noncontrolling interests for capital activities	`PaymentsToMinorityShareholders`	$10.63M	USD	3 Qtrs
Distributions to noncontrolling interests for capital activities	`PaymentsToMinorityShareholders`	$10.63M	USD	3 Qtrs
Distributions to noncontrolling interests for capital activities	`PaymentsToMinorityShareholders`	$10.63M	USD	3 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$412.28M	USD	3 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$412.28M	USD	3 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$343.21M	USD	3 Qtrs
Net cash provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$343.21M	USD	3 Qtrs
NET INCREASE IN CASH AND CASH EQUIVALENTS	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$44.22M	USD	3 Qtrs
NET INCREASE IN CASH AND CASH EQUIVALENTS	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$44.22M	USD	3 Qtrs
NET INCREASE IN CASH AND CASH EQUIVALENTS	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$10.28M	USD	3 Qtrs
NET INCREASE IN CASH AND CASH EQUIVALENTS	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$10.28M	USD	3 Qtrs
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$15.11M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$15.11M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.96M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.96M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$49.17M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$49.17M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.83M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.83M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$15.11M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$15.11M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.96M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.96M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$49.17M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$49.17M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.83M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$4.83M	USD	Point-in-time

Stockholders Equity 92 line items

Line Item	Tag	Value	Unit	Period
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.73	USD	3 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.73	USD	3 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.76	USD	3 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$1.76	USD	3 Qtrs
Beginning balance (in shares)	`CommonStockSharesIssued`	113.54M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesIssued`	113.54M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesIssued`	113.74M	shares	Point-in-time
Beginning balance (in shares)	`CommonStockSharesIssued`	113.74M	shares	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.16B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.16B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.49B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.49B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.28B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.28B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.32B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.32B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.73B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.73B	USD	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	101,641.00	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	101,641.00	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	113,272.00	shares	Point-in-time
Beginning balance (in shares)	`TreasuryStockCommonShares`	113,272.00	shares	Point-in-time
Net income	`ProfitLoss`	$399.27M	USD	1 Quarter
Net income	`ProfitLoss`	$399.27M	USD	1 Quarter
Net income	`ProfitLoss`	$628.55M	USD	3 Qtrs
Net income	`ProfitLoss`	$628.55M	USD	3 Qtrs
Net income	`ProfitLoss`	$514.50M	USD	3 Qtrs
Net income	`ProfitLoss`	$514.50M	USD	3 Qtrs
Net income	`ProfitLoss`	$402.52M	USD	1 Quarter
Net income	`ProfitLoss`	$402.52M	USD	1 Quarter
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.16M	USD	1 Quarter
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.16M	USD	1 Quarter
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.00M	USD	3 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.00M	USD	3 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$330.00K	USD	3 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$330.00K	USD	3 Qtrs
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$480.00K	USD	1 Quarter
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$480.00K	USD	1 Quarter
Dividends on common stock	`DividendsCommonStockNet`	$195.98M	USD	3 Qtrs
Dividends on common stock	`DividendsCommonStockNet`	$195.98M	USD	3 Qtrs
Dividends on common stock	`DividendsCommonStockNet`	$199.87M	USD	3 Qtrs
Dividends on common stock	`DividendsCommonStockNet`	$199.87M	USD	3 Qtrs
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$8.39M	USD	1 Quarter
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$8.39M	USD	1 Quarter
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$21.83M	USD	3 Qtrs
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$21.83M	USD	3 Qtrs
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$9.99M	USD	1 Quarter
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$9.99M	USD	1 Quarter
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$19.76M	USD	3 Qtrs
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$19.76M	USD	3 Qtrs
Purchase of treasury stock	`TreasuryStockValueAcquiredCostMethod`	$2.61M	USD	3 Qtrs
Purchase of treasury stock	`TreasuryStockValueAcquiredCostMethod`	$2.61M	USD	3 Qtrs
Purchase of treasury stock	`TreasuryStockValueAcquiredCostMethod`	$4.91M	USD	3 Qtrs
Purchase of treasury stock	`TreasuryStockValueAcquiredCostMethod`	$4.91M	USD	3 Qtrs
Reissuance of treasury stock for stock-based compensation and other	`StockIssuedDuringPeriodValueTreasuryStockReissued`	$5.90M	USD	3 Qtrs
Reissuance of treasury stock for stock-based compensation and other	`StockIssuedDuringPeriodValueTreasuryStockReissued`	$5.90M	USD	3 Qtrs
Reissuance of treasury stock for stock-based compensation and other	`StockIssuedDuringPeriodValueTreasuryStockReissued`	$2.29M	USD	3 Qtrs
Reissuance of treasury stock for stock-based compensation and other	`StockIssuedDuringPeriodValueTreasuryStockReissued`	$2.29M	USD	3 Qtrs
Capital activities by noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$10.63M	USD	3 Qtrs
Capital activities by noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$10.63M	USD	3 Qtrs
Capital activities by noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$10.63M	USD	3 Qtrs
Capital activities by noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$10.63M	USD	3 Qtrs
Other	`StockholdersEquityOther`	$-2.00K	USD	1 Quarter
Other	`StockholdersEquityOther`	$-2.00K	USD	1 Quarter
Other	`StockholdersEquityOther`	$-1.00K	USD	3 Qtrs
Other	`StockholdersEquityOther`	$-1.00K	USD	3 Qtrs
Other	`StockholdersEquityOther`	$-1.00K	USD	3 Qtrs
Other	`StockholdersEquityOther`	$-1.00K	USD	3 Qtrs
Other	`StockholdersEquityOther`	$-2.00K	USD	1 Quarter
Other	`StockholdersEquityOther`	$-2.00K	USD	1 Quarter
Ending balance (in shares)	`CommonStockSharesIssued`	113.54M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesIssued`	113.54M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesIssued`	113.74M	shares	Point-in-time
Ending balance (in shares)	`CommonStockSharesIssued`	113.74M	shares	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.16B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.16B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.49B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.49B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.08B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.28B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.28B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.32B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.32B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.73B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$6.73B	USD	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	101,641.00	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	101,641.00	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	113,272.00	shares	Point-in-time
Ending balance (in shares)	`TreasuryStockCommonShares`	113,272.00	shares	Point-in-time

Comprehensive Income 72 line items

Line Item	Tag	Value	Unit	Period
Derivative instruments net unrealized gain (loss), net of tax benefit (expense)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	$-142.00K	USD	3 Qtrs
Derivative instruments net unrealized gain (loss), net of tax benefit (expense)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	$-142.00K	USD	3 Qtrs
NET INCOME	`ProfitLoss`	$399.27M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$399.27M	USD	1 Quarter
Derivative instruments net unrealized gain (loss), net of tax benefit (expense)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	$-11.00K	USD	1 Quarter
Derivative instruments net unrealized gain (loss), net of tax benefit (expense)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	$-11.00K	USD	1 Quarter
NET INCOME	`ProfitLoss`	$628.55M	USD	3 Qtrs
NET INCOME	`ProfitLoss`	$628.55M	USD	3 Qtrs
Derivative instruments net unrealized gain (loss), net of tax benefit (expense)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	$217.00K	USD	1 Quarter
Derivative instruments net unrealized gain (loss), net of tax benefit (expense)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	$217.00K	USD	1 Quarter
Derivative instruments net unrealized gain (loss), net of tax benefit (expense)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	$161.00K	USD	3 Qtrs
Derivative instruments net unrealized gain (loss), net of tax benefit (expense)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	$161.00K	USD	3 Qtrs
NET INCOME	`ProfitLoss`	$514.50M	USD	3 Qtrs
NET INCOME	`ProfitLoss`	$514.50M	USD	3 Qtrs
NET INCOME	`ProfitLoss`	$402.52M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$402.52M	USD	1 Quarter
Pension and other postretirement benefit activity, net of tax benefit (expense)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-168.00K	USD	3 Qtrs
Pension and other postretirement benefit activity, net of tax benefit (expense)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-168.00K	USD	3 Qtrs
Pension and other postretirement benefit activity, net of tax benefit (expense)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-169.00K	USD	1 Quarter
Pension and other postretirement benefit activity, net of tax benefit (expense)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-169.00K	USD	1 Quarter
Pension and other postretirement benefit activity, net of tax benefit (expense)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-251.00K	USD	3 Qtrs
Pension and other postretirement benefit activity, net of tax benefit (expense)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-251.00K	USD	3 Qtrs
Pension and other postretirement benefit activity, net of tax benefit (expense)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-164.00K	USD	1 Quarter
Pension and other postretirement benefit activity, net of tax benefit (expense)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-164.00K	USD	1 Quarter
Derivative instruments net unrealized gain (loss), net of tax benefit (expense) of $11, $(217), $142 and $(161)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$-33.00K	USD	1 Quarter
Derivative instruments net unrealized gain (loss), net of tax benefit (expense) of $11, $(217), $142 and $(161)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$-33.00K	USD	1 Quarter
Derivative instruments net unrealized gain (loss), net of tax benefit (expense) of $11, $(217), $142 and $(161)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$489.00K	USD	3 Qtrs
Derivative instruments net unrealized gain (loss), net of tax benefit (expense) of $11, $(217), $142 and $(161)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$489.00K	USD	3 Qtrs
Derivative instruments net unrealized gain (loss), net of tax benefit (expense) of $11, $(217), $142 and $(161)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$-432.00K	USD	3 Qtrs
Derivative instruments net unrealized gain (loss), net of tax benefit (expense) of $11, $(217), $142 and $(161)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$-432.00K	USD	3 Qtrs
Derivative instruments net unrealized gain (loss), net of tax benefit (expense) of $11, $(217), $142 and $(161)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$659.00K	USD	1 Quarter
Derivative instruments net unrealized gain (loss), net of tax benefit (expense) of $11, $(217), $142 and $(161)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAfterTax`	$659.00K	USD	1 Quarter
Pension and other postretirement benefit activity, net of tax expense of $(169), $(164), $(251) and $(168)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-762.00K	USD	3 Qtrs
Pension and other postretirement benefit activity, net of tax expense of $(169), $(164), $(251) and $(168)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-762.00K	USD	3 Qtrs
Pension and other postretirement benefit activity, net of tax expense of $(169), $(164), $(251) and $(168)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-512.00K	USD	3 Qtrs
Pension and other postretirement benefit activity, net of tax expense of $(169), $(164), $(251) and $(168)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-512.00K	USD	3 Qtrs
Pension and other postretirement benefit activity, net of tax expense of $(169), $(164), $(251) and $(168)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-513.00K	USD	1 Quarter
Pension and other postretirement benefit activity, net of tax expense of $(169), $(164), $(251) and $(168)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-513.00K	USD	1 Quarter
Pension and other postretirement benefit activity, net of tax expense of $(169), $(164), $(251) and $(168)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-498.00K	USD	1 Quarter
Pension and other postretirement benefit activity, net of tax expense of $(169), $(164), $(251) and $(168)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-498.00K	USD	1 Quarter
Total other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.16M	USD	1 Quarter
Total other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.16M	USD	1 Quarter
Total other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.00M	USD	3 Qtrs
Total other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$1.00M	USD	3 Qtrs
Total other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$330.00K	USD	3 Qtrs
Total other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$330.00K	USD	3 Qtrs
Total other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$480.00K	USD	1 Quarter
Total other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$480.00K	USD	1 Quarter
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$399.75M	USD	1 Quarter
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$399.75M	USD	1 Quarter
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$515.50M	USD	3 Qtrs
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$515.50M	USD	3 Qtrs
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$628.88M	USD	3 Qtrs
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$628.88M	USD	3 Qtrs
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$403.68M	USD	1 Quarter
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$403.68M	USD	1 Quarter
Less: Comprehensive income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$4.31M	USD	1 Quarter
Less: Comprehensive income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$4.31M	USD	1 Quarter
Less: Comprehensive income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$12.92M	USD	3 Qtrs
Less: Comprehensive income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$12.92M	USD	3 Qtrs
Less: Comprehensive income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$12.92M	USD	3 Qtrs
Less: Comprehensive income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$12.92M	USD	3 Qtrs
Less: Comprehensive income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$4.31M	USD	1 Quarter
Less: Comprehensive income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$4.31M	USD	1 Quarter
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`ComprehensiveIncomeNetOfTax`	$395.45M	USD	1 Quarter
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`ComprehensiveIncomeNetOfTax`	$395.45M	USD	1 Quarter
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`ComprehensiveIncomeNetOfTax`	$399.37M	USD	1 Quarter
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`ComprehensiveIncomeNetOfTax`	$399.37M	USD	1 Quarter
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`ComprehensiveIncomeNetOfTax`	$615.96M	USD	3 Qtrs
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`ComprehensiveIncomeNetOfTax`	$615.96M	USD	3 Qtrs
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`ComprehensiveIncomeNetOfTax`	$502.58M	USD	3 Qtrs
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`ComprehensiveIncomeNetOfTax`	$502.58M	USD	3 Qtrs

Data is extracted from SEC EDGAR XBRL filings. Values shown are as reported in the filing.