10-K Filing

PINNACLE WEST CAPITAL CORP CIK: 764622 FY 2017

Filing Information

Form Type	10-K
Accession Number	`0000764622-18-000018`
Period End Date	20171231
Filing Date	20180223
Fiscal Year	2017
Fiscal Period	FY
XBRL Instance	pnw-20171231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 144 Income Statement 136 Cash Flow Statement 154 Stockholders Equity 45 Comprehensive Income 41

Balance Sheet 144 line items

Line Item	Tag	Value	Unit	Period
Accumulated depreciation of Palo Verde sale leaseback	`SaleLeasebackTransactionAccumulatedDepreciation`	$237.53M	USD	Point-in-time
Accumulated depreciation of Palo Verde sale leaseback	`SaleLeasebackTransactionAccumulatedDepreciation`	$241.41M	USD	Point-in-time
Accumulated amortization on intangible assets	`FiniteLivedIntangibleAssetsAccumulatedAmortization`	$603.64M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$39.49M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$13.89M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$7.60M	USD	Point-in-time
Accumulated amortization on intangible assets	`FiniteLivedIntangibleAssetsAccumulatedAmortization`	$582.27M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$8.88M	USD	Point-in-time
Accumulated amortization on nuclear fuel	`AccumulatedAmortizationOnNuclearFuel`	$144.07M	USD	Point-in-time
Accumulated amortization on nuclear fuel	`AccumulatedAmortizationOnNuclearFuel`	$147.20M	USD	Point-in-time
Customer and other receivables	`AccountsReceivableGrossCurrent`	$305.15M	USD	Point-in-time
Customer and other receivables	`AccountsReceivableGrossCurrent`	$250.49M	USD	Point-in-time
Accrued unbilled revenues	`CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear`	$107.95M	USD	Point-in-time
Accrued unbilled revenues	`CostsInExcessOfBillingsOnUncompletedContractsOrProgramsExpectedToBeCollectedWithinOneYear`	$112.43M	USD	Point-in-time
Common stock, par value	`CommonStockNoParValue`	-	USD	Point-in-time
Allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$3.04M	USD	Point-in-time
Allowance for doubtful accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$2.51M	USD	Point-in-time
Common stock, par value	`CommonStockNoParValue`	-	USD	Point-in-time
Materials and supplies (at average cost)	`OtherInventorySupplies`	$264.01M	USD	Point-in-time
Common stock, authorized shares	`CommonStockSharesAuthorized`	150.00M	shares	Point-in-time
Materials and supplies (at average cost)	`OtherInventorySupplies`	$253.98M	USD	Point-in-time
Common stock, authorized shares	`CommonStockSharesAuthorized`	150.00M	shares	Point-in-time
Fossil fuel (at average cost)	`EnergyRelatedInventoryOtherFossilFuel`	$28.61M	USD	Point-in-time
Fossil fuel (at average cost)	`EnergyRelatedInventoryOtherFossilFuel`	$25.26M	USD	Point-in-time
Common stock, issued shares	`CommonStockSharesIssued`	111.39M	shares	Point-in-time
Common stock, issued shares	`CommonStockSharesIssued`	111.82M	shares	Point-in-time
Treasury stock at cost, shares	`TreasuryStockShares`	55,317.00	shares	Point-in-time
Treasury stock at cost, shares	`TreasuryStockShares`	64,463.00	shares	Point-in-time
Income tax receivable (Note 4)	`IncomeTaxesReceivable`	$3.75M	USD	Point-in-time
Income tax receivable (Note 4)	`IncomeTaxesReceivable`	-	USD	Point-in-time
Assets from risk management activities (Note 16)	`DerivativeInstrumentsAndHedges`	$1.93M	USD	Point-in-time
Assets from risk management activities (Note 16)	`DerivativeInstrumentsAndHedges`	$19.69M	USD	Point-in-time
Deferred fuel and purchased power regulatory asset (Note 3)	`DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent`	$12.46M	USD	Point-in-time
Deferred fuel and purchased power regulatory asset (Note 3)	`DeferredFuelAndPurchasedPowerRegulatoryAssetCurrent`	$75.64M	USD	Point-in-time
Other regulatory assets (Note 3)	`RegulatoryAssetsCurrent`	$172.45M	USD	Point-in-time
Other regulatory assets (Note 3)	`RegulatoryAssetsCurrent`	$94.41M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$48.04M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$45.03M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$822.22M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$1.02B	USD	Point-in-time
Assets from risk management activities (Note 16)	`DerivativeInstrumentsAndHedgesNoncurrent`	$1.00K	USD	Point-in-time
Assets from risk management activities (Note 16)	`DerivativeInstrumentsAndHedgesNoncurrent`	$51.00K	USD	Point-in-time
Nuclear decommissioning trust (Notes 13 and 19)	`DecommissioningTrustAssetsAmount`	$871.00M	USD	Point-in-time
Nuclear decommissioning trust (Notes 13 and 19)	`DecommissioningTrustAssetsAmount`	$779.59M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$84.53M	USD	Point-in-time
Other assets	`OtherAssetsNoncurrent`	$69.06M	USD	Point-in-time
Total investments and other assets	`TotalInvestmentsAndOtherAssets`	$955.58M	USD	Point-in-time
Total investments and other assets	`TotalInvestmentsAndOtherAssets`	$848.65M	USD	Point-in-time
Plant in service and held for future use	`PropertyPlantAndEquipmentGross`	$17.34B	USD	Point-in-time
Plant in service and held for future use	`PropertyPlantAndEquipmentGross`	$17.80B	USD	Point-in-time
Accumulated depreciation and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$6.13B	USD	Point-in-time
Accumulated depreciation and amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$5.97B	USD	Point-in-time
Net	`PropertyPlantAndEquipmentNet`	$11.67B	USD	Point-in-time
Net	`PropertyPlantAndEquipmentNet`	$11.37B	USD	Point-in-time
Construction work in progress	`ConstructionInProgressGross`	$1.29B	USD	Point-in-time
Construction work in progress	`ConstructionInProgressGross`	$1.02B	USD	Point-in-time
Palo Verde sale leaseback, net of accumulated depreciation of $241,405 and $237,535 (Note 18)	`VariableInterestEntityConsolidatedCarryingAmountAssets`	$113.52M	USD	Point-in-time
Palo Verde sale leaseback, net of accumulated depreciation of $241,405 and $237,535 (Note 18)	`VariableInterestEntityConsolidatedCarryingAmountAssets`	$109.64M	USD	Point-in-time
Intangible assets, net of accumulated amortization of $582,272 and $603,637	`IntangibleAssetsNetExcludingGoodwill`	$90.02M	USD	Point-in-time
Intangible assets, net of accumulated amortization of $582,272 and $603,637	`IntangibleAssetsNetExcludingGoodwill`	$257.19M	USD	Point-in-time
Nuclear fuel, net of accumulated amortization of $144,070 and $147,202	`NuclearFuelNetOfAmortization`	$117.41M	USD	Point-in-time
Nuclear fuel, net of accumulated amortization of $144,070 and $147,202	`NuclearFuelNetOfAmortization`	$119.00M	USD	Point-in-time
Total property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$12.71B	USD	Point-in-time
Total property, plant and equipment	`PublicUtilitiesPropertyPlantAndEquipmentNet`	$13.45B	USD	Point-in-time
Regulatory assets (Notes 1, 3 and 4)	`RegulatoryAssetsNoncurrent`	$1.31B	USD	Point-in-time
Regulatory assets (Notes 1, 3 and 4)	`RegulatoryAssetsNoncurrent`	$1.20B	USD	Point-in-time
Assets for other postretirement benefits (Note 7)	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$268.98M	USD	Point-in-time
Assets for other postretirement benefits (Note 7)	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$166.21M	USD	Point-in-time
Other	`OtherDeferredCostsNet`	$130.67M	USD	Point-in-time
Other	`OtherDeferredCostsNet`	$139.47M	USD	Point-in-time
Total deferred debits	`TotalDeferredDebits`	$1.62B	USD	Point-in-time
Total deferred debits	`TotalDeferredDebits`	$1.60B	USD	Point-in-time
Total Assets	`Assets`	$16.00B	USD	Point-in-time
Total Assets	`Assets`	$17.02B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$256.44M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$264.63M	USD	Point-in-time
Accrued taxes (Note 4)	`TaxesPayableCurrent`	$138.96M	USD	Point-in-time
Accrued taxes (Note 4)	`TaxesPayableCurrent`	$148.95M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$56.40M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$52.84M	USD	Point-in-time
Common dividends payable	`DividendsPayableCurrent`	$72.93M	USD	Point-in-time
Common dividends payable	`DividendsPayableCurrent`	$77.67M	USD	Point-in-time
Short-term borrowings (Note 5)	`ShortTermBorrowings`	$177.20M	USD	Point-in-time
Short-term borrowings (Note 5)	`ShortTermBorrowings`	$95.40M	USD	Point-in-time
Current maturities of long-term debt (Note 6)	`OtherLongTermDebtCurrent`	$125.00M	USD	Point-in-time
Current maturities of long-term debt (Note 6)	`OtherLongTermDebtCurrent`	$82.00M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$70.39M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$82.52M	USD	Point-in-time
Liabilities from risk management activities (Note 16)	`DerivativeInstrumentsAndHedgesLiabilities`	$59.25M	USD	Point-in-time
Liabilities from risk management activities (Note 16)	`DerivativeInstrumentsAndHedgesLiabilities`	$25.84M	USD	Point-in-time
Liabilities for asset retirements (Note 11)	`AssetRetirementObligationCurrent`	$9.13M	USD	Point-in-time
Liabilities for asset retirements (Note 11)	`AssetRetirementObligationCurrent`	$4.75M	USD	Point-in-time
Regulatory liabilities (Note 3)	`RegulatoryLiabilityCurrent`	$99.90M	USD	Point-in-time
Regulatory liabilities (Note 3)	`RegulatoryLiabilityCurrent`	$100.09M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$244.00M	USD	Point-in-time
Other current liabilities	`OtherLiabilitiesCurrent`	$246.53M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.20B	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.29B	USD	Point-in-time
LONG-TERM DEBT LESS CURRENT MATURITIES (Note 6)	`LongTermDebtNoncurrent`	$4.79B	USD	Point-in-time
LONG-TERM DEBT LESS CURRENT MATURITIES (Note 6)	`LongTermDebtNoncurrent`	$4.02B	USD	Point-in-time
Deferred income taxes (Note 4)	`DeferredIncomeTaxLiabilitiesNet`	$1.69B	USD	Point-in-time
Deferred income taxes (Note 4)	`DeferredIncomeTaxLiabilitiesNet`	$2.95B	USD	Point-in-time
Regulatory liabilities (Notes 1, 3, 4 and 7)	`RegulatoryLiabilityNoncurrent`	$2.45B	USD	Point-in-time
Regulatory liabilities (Notes 1, 3, 4 and 7)	`RegulatoryLiabilityNoncurrent`	$948.92M	USD	Point-in-time
Liabilities for asset retirements (Note 11)	`AssetRetirementObligationsNoncurrent`	$615.34M	USD	Point-in-time
Liabilities for asset retirements (Note 11)	`AssetRetirementObligationsNoncurrent`	$674.78M	USD	Point-in-time
Liabilities for pension benefits (Note 7)	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$327.30M	USD	Point-in-time
Liabilities for pension benefits (Note 7)	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$509.31M	USD	Point-in-time
Liabilities from risk management activities (Note 16)	`DerivativeLiabilitiesNoncurrent`	$37.17M	USD	Point-in-time
Liabilities from risk management activities (Note 16)	`DerivativeLiabilitiesNoncurrent`	$47.24M	USD	Point-in-time
Customer advances	`CustomerAdvancesForConstruction`	$88.67M	USD	Point-in-time
Customer advances	`CustomerAdvancesForConstruction`	$114.00M	USD	Point-in-time
Coal mine reclamation	`MineReclamationAndClosingLiabilityNoncurrent`	$231.60M	USD	Point-in-time
Coal mine reclamation	`MineReclamationAndClosingLiabilityNoncurrent`	$221.91M	USD	Point-in-time
Deferred investment tax credit	`AccumulatedDeferredInvestmentTaxCredit`	$210.16M	USD	Point-in-time
Deferred investment tax credit	`AccumulatedDeferredInvestmentTaxCredit`	$205.57M	USD	Point-in-time
Unrecognized tax benefits (Note 4)	`LiabilityForUncertainTaxPositionsNoncurrent`	$10.05M	USD	Point-in-time
Unrecognized tax benefits (Note 4)	`LiabilityForUncertainTaxPositionsNoncurrent`	$13.12M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$148.91M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$156.78M	USD	Point-in-time
Total deferred credits and other	`DeferredCreditsAndOtherLiabilities`	$5.75B	USD	Point-in-time
Total deferred credits and other	`DeferredCreditsAndOtherLiabilities`	$5.90B	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (SEE NOTES)	`CommitmentsAndContingencies`	-	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (SEE NOTES)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock, no par value; authorized 150,000,000 shares, 111,816,170 and 111,392,053 issued at respective dates	`CommonStockValue`	$2.61B	USD	Point-in-time
Common stock, no par value; authorized 150,000,000 shares, 111,816,170 and 111,392,053 issued at respective dates	`CommonStockValue`	$2.60B	USD	Point-in-time
Treasury stock at cost; 64,463 shares at end of 2017 and 55,317 shares at end of 2016	`TreasuryStockValue`	$4.13M	USD	Point-in-time
Treasury stock at cost; 64,463 shares at end of 2017 and 55,317 shares at end of 2016	`TreasuryStockValue`	$5.62M	USD	Point-in-time
Total common stock	`CommonStockValueOutstanding`	$2.61B	USD	Point-in-time
Total common stock	`CommonStockValueOutstanding`	$2.59B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$2.26B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$2.44B	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-45.00M	USD	Point-in-time
Accumulated other comprehensive loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-43.82M	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$5.01B	USD	Point-in-time
Total shareholders equity	`StockholdersEquity`	$4.80B	USD	Point-in-time
Noncontrolling interests (Note 18)	`MinorityInterest`	$132.29M	USD	Point-in-time
Noncontrolling interests (Note 18)	`MinorityInterest`	$129.04M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.94B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.72B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.52B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.14B	USD	Point-in-time
Total Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$17.02B	USD	Point-in-time
Total Liabilities and Equity	`LiabilitiesAndStockholdersEquity`	$16.00B	USD	Point-in-time

Income Statement 136 line items

Line Item	Tag	Value	Unit	Period
OPERATING REVENUES	`SalesRevenueNet`	$3.57B	USD	Annual
OPERATING REVENUES	`SalesRevenueNet`	$677.73M	USD	1 Quarter
OPERATING REVENUES	`SalesRevenueNet`	$3.50B	USD	Annual
OPERATING REVENUES	`SalesRevenueNet`	$3.50B	USD	Annual
OPERATING REVENUES	`SalesRevenueNet`	$677.17M	USD	1 Quarter
OPERATING REVENUES	`SalesRevenueNet`	$944.59M	USD	1 Quarter
OPERATING REVENUES	`SalesRevenueNet`	$1.17B	USD	1 Quarter
OPERATING REVENUES	`SalesRevenueNet`	$915.39M	USD	1 Quarter
OPERATING REVENUES	`SalesRevenueNet`	$759.66M	USD	1 Quarter
OPERATING REVENUES	`SalesRevenueNet`	$739.20M	USD	1 Quarter
OPERATING REVENUES	`SalesRevenueNet`	$1.18B	USD	1 Quarter
Fuel and purchased power	`CostOfGoodsSoldElectric`	$1.10B	USD	Annual
Fuel and purchased power	`CostOfGoodsSoldElectric`	$1.08B	USD	Annual
Fuel and purchased power	`CostOfGoodsSoldElectric`	$981.30M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$243.19M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$219.98M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$208.28M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$266.15M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$911.32M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$217.57M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$214.01M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$868.38M	USD	Annual
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$224.31M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$242.28M	USD	1 Quarter
Operations and maintenance	`UtilitiesOperatingExpenseMaintenanceAndOperations`	$924.44M	USD	Annual
Depreciation and amortization	`CostOfServicesDepreciationAndAmortization`	$494.42M	USD	Annual
Depreciation and amortization	`CostOfServicesDepreciationAndAmortization`	$534.12M	USD	Annual
Depreciation and amortization	`CostOfServicesDepreciationAndAmortization`	$485.83M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$166.50M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$171.81M	USD	Annual
Taxes other than income taxes	`TaxesExcludingIncomeAndExciseTaxes`	$184.35M	USD	Annual
Other expenses	`OtherCostAndExpenseOperating`	$6.66M	USD	Annual
Other expenses	`OtherCostAndExpenseOperating`	$4.93M	USD	Annual
Other expenses	`OtherCostAndExpenseOperating`	$3.54M	USD	Annual
Total	`CostsAndExpenses`	$2.63B	USD	Annual
Total	`CostsAndExpenses`	$2.64B	USD	Annual
Total	`CostsAndExpenses`	$2.64B	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$855.98M	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$466.08M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$73.51M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$231.75M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$122.82M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$90.61M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$934.43M	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$451.26M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$50.16M	USD	1 Quarter
OPERATING INCOME	`OperatingIncomeLoss`	$854.60M	USD	Annual
OPERATING INCOME	`OperatingIncomeLoss`	$304.23M	USD	1 Quarter
Allowance for equity funds used during construction (Note 1)	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$35.22M	USD	Annual
Allowance for equity funds used during construction (Note 1)	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$42.14M	USD	Annual
Allowance for equity funds used during construction (Note 1)	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$47.01M	USD	Annual
Other income (Note 17)	`OtherNonoperatingIncome`	$901.00K	USD	Annual
Other income (Note 17)	`OtherNonoperatingIncome`	$621.00K	USD	Annual
Other income (Note 17)	`OtherNonoperatingIncome`	$4.01M	USD	Annual
Other expense (Note 17)	`OtherNonoperatingExpense`	$17.82M	USD	Annual
Other expense (Note 17)	`OtherNonoperatingExpense`	$21.54M	USD	Annual
Other expense (Note 17)	`OtherNonoperatingExpense`	$15.34M	USD	Annual
Total	`NonoperatingIncomeExpense`	$29.48M	USD	Annual
Total	`NonoperatingIncomeExpense`	$18.01M	USD	Annual
Total	`NonoperatingIncomeExpense`	$27.70M	USD	Annual
Interest charges	`InterestCostsIncurred`	$205.72M	USD	Annual
Interest charges	`InterestCostsIncurred`	$219.80M	USD	Annual
Interest charges	`InterestCostsIncurred`	$194.96M	USD	Annual
Allowance for borrowed funds used during construction (Note 1)	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$19.97M	USD	Annual
Allowance for borrowed funds used during construction (Note 1)	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$22.11M	USD	Annual
Allowance for borrowed funds used during construction (Note 1)	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$16.26M	USD	Annual
Total	`InterestExpense`	$185.75M	USD	Annual
Total	`InterestExpense`	$197.68M	USD	Annual
Total	`InterestExpense`	$178.71M	USD	Annual
INCOME BEFORE INCOME TAXES	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$766.22M	USD	Annual
INCOME BEFORE INCOME TAXES	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$697.94M	USD	Annual
INCOME BEFORE INCOME TAXES	`IncomeLossIncludingPortionAttributableToNoncontrollingInterest`	$693.91M	USD	Annual
INCOME TAXES (Note 4)	`IncomeTaxExpenseBenefit`	$237.72M	USD	Annual
INCOME TAXES (Note 4)	`IncomeTaxExpenseBenefit`	$236.41M	USD	Annual
INCOME TAXES (Note 4)	`IncomeTaxExpenseBenefit`	$88.97M	USD	1 Quarter
INCOME TAXES (Note 4)	`IncomeTaxExpenseBenefit`	$258.27M	USD	Annual
INCOME TAXES (Note 4)	`IncomeTaxExpenseBenefit`	$141.45M	USD	1 Quarter
INCOME TAXES (Note 4)	`IncomeTaxExpenseBenefit`	$4.21M	USD	1 Quarter
INCOME TAXES (Note 4)	`IncomeTaxExpenseBenefit`	$65.74M	USD	1 Quarter
INCOME TAXES (Note 4)	`IncomeTaxExpenseBenefit`	$20.77M	USD	1 Quarter
INCOME TAXES (Note 4)	`IncomeTaxExpenseBenefit`	$1.91M	USD	1 Quarter
INCOME TAXES (Note 4)	`IncomeTaxExpenseBenefit`	$27.31M	USD	1 Quarter
INCOME TAXES (Note 4)	`IncomeTaxExpenseBenefit`	$144.32M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$280.94M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$9.33M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$456.19M	USD	Annual
NET INCOME	`ProfitLoss`	$58.12M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$28.18M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$126.18M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$172.32M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$26.50M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$461.53M	USD	Annual
NET INCOME	`ProfitLoss`	$267.90M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$507.95M	USD	Annual
Less: Net income attributable to noncontrolling interests (Note 18)	`NetIncomeLossAttributableToNoncontrollingInterest`	$19.49M	USD	Annual
Less: Net income attributable to noncontrolling interests (Note 18)	`NetIncomeLossAttributableToNoncontrollingInterest`	$19.49M	USD	Annual
Less: Net income attributable to noncontrolling interests (Note 18)	`NetIncomeLossAttributableToNoncontrollingInterest`	$18.93M	USD	Annual
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$21.63M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$23.31M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$488.46M	USD	Annual
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$121.31M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$263.03M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$437.26M	USD	Annual
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$442.03M	USD	Annual
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$53.25M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$167.44M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$276.07M	USD	1 Quarter
NET INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`NetIncomeLossAvailableToCommonStockholdersBasic`	$4.45M	USD	1 Quarter
Weighted Average common shares outstanding basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	111.41M	shares	Annual
Weighted Average common shares outstanding basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	111.03M	shares	Annual
Weighted Average common shares outstanding basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	111.84M	shares	Annual
Weighted Average common shares outstanding diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	112.37M	shares	Annual
Weighted Average common shares outstanding diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	112.05M	shares	Annual
Weighted Average common shares outstanding diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	111.55M	shares	Annual
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$0.04	USD	1 Quarter
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$0.21	USD	1 Quarter
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$0.48	USD	1 Quarter
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$2.36	USD	1 Quarter
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$3.97	USD	Annual
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$3.94	USD	Annual
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$1.50	USD	1 Quarter
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$2.47	USD	1 Quarter
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$1.09	USD	1 Quarter
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$0.19	USD	1 Quarter
Net income attributable to common shareholders - basic (in dollars per share)	`EarningsPerShareBasic`	$4.37	USD	Annual
Net income attributable to common shareholders diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.47	USD	1 Quarter
Net income attributable to common shareholders diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.49	USD	1 Quarter
Net income attributable to common shareholders diluted (in dollars per share)	`EarningsPerShareDiluted`	$4.35	USD	Annual
Net income attributable to common shareholders diluted (in dollars per share)	`EarningsPerShareDiluted`	$1.08	USD	1 Quarter
Net income attributable to common shareholders diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.21	USD	1 Quarter
Net income attributable to common shareholders diluted (in dollars per share)	`EarningsPerShareDiluted`	$2.35	USD	1 Quarter
Net income attributable to common shareholders diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.19	USD	1 Quarter
Net income attributable to common shareholders diluted (in dollars per share)	`EarningsPerShareDiluted`	$2.46	USD	1 Quarter
Net income attributable to common shareholders diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.92	USD	Annual
Net income attributable to common shareholders diluted (in dollars per share)	`EarningsPerShareDiluted`	$3.95	USD	Annual
Net income attributable to common shareholders diluted (in dollars per share)	`EarningsPerShareDiluted`	$0.04	USD	1 Quarter

Cash Flow Statement 154 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$280.94M	USD	1 Quarter
Net income	`ProfitLoss`	$9.33M	USD	1 Quarter
Net income	`ProfitLoss`	$456.19M	USD	Annual
Net income	`ProfitLoss`	$58.12M	USD	1 Quarter
Net income	`ProfitLoss`	$28.18M	USD	1 Quarter
Net income	`ProfitLoss`	$126.18M	USD	1 Quarter
Net income	`ProfitLoss`	$172.32M	USD	1 Quarter
Net income	`ProfitLoss`	$26.50M	USD	1 Quarter
Net income	`ProfitLoss`	$461.53M	USD	Annual
Net income	`ProfitLoss`	$267.90M	USD	1 Quarter
Net income	`ProfitLoss`	$507.95M	USD	Annual
Depreciation and amortization including nuclear fuel	`DepreciationDepletionAndAmortization`	$571.66M	USD	Annual
Depreciation and amortization including nuclear fuel	`DepreciationDepletionAndAmortization`	$565.01M	USD	Annual
Depreciation and amortization including nuclear fuel	`DepreciationDepletionAndAmortization`	$610.63M	USD	Annual
Deferred fuel and purchased power	`IncreaseDecreaseInRegulatoryClauseRevenue`	$-48.41M	USD	Annual
Deferred fuel and purchased power	`IncreaseDecreaseInRegulatoryClauseRevenue`	$-60.30M	USD	Annual
Deferred fuel and purchased power	`IncreaseDecreaseInRegulatoryClauseRevenue`	$15.00M	USD	Annual
Deferred fuel and purchased power amortization	`IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization`	$38.15M	USD	Annual
Deferred fuel and purchased power amortization	`IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization`	$1.62M	USD	Annual
Deferred fuel and purchased power amortization	`IncreaseDecreaseDeferredFuelAndPurchasedPowerAmortization`	$-14.77M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$35.22M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$42.14M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$47.01M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$206.87M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$236.82M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$248.16M	USD	Annual
Deferred investment tax credit	`DeferredInvestmentTaxCreditExpense`	$-4.59M	USD	Annual
Deferred investment tax credit	`DeferredInvestmentTaxCreditExpense`	$8.47M	USD	Annual
Deferred investment tax credit	`DeferredInvestmentTaxCreditExpense`	$23.08M	USD	Annual
Change in derivative instruments fair value	`UnrealizedGainLossOnDerivatives`	$373.00K	USD	Annual
Change in derivative instruments fair value	`UnrealizedGainLossOnDerivatives`	$403.00K	USD	Annual
Change in derivative instruments fair value	`UnrealizedGainLossOnDerivatives`	$381.00K	USD	Annual
Stock compensation	`ShareBasedCompensation`	$18.88M	USD	Annual
Stock compensation	`ShareBasedCompensation`	$20.50M	USD	Annual
Stock compensation	`ShareBasedCompensation`	$18.76M	USD	Annual
Customer and other receivables	`IncreaseDecreaseInReceivables`	$2.49M	USD	Annual
Customer and other receivables	`IncreaseDecreaseInReceivables`	$93.80M	USD	Annual
Customer and other receivables	`IncreaseDecreaseInReceivables`	$22.22M	USD	Annual
Accrued unbilled revenues	`IncreaseDecreaseInUnbilledReceivables`	$4.49M	USD	Annual
Accrued unbilled revenues	`IncreaseDecreaseInUnbilledReceivables`	$11.71M	USD	Annual
Accrued unbilled revenues	`IncreaseDecreaseInUnbilledReceivables`	$-4.29M	USD	Annual
Materials, supplies and fossil fuel	`IncreaseDecreaseInInventories`	$23.95M	USD	Annual
Materials, supplies and fossil fuel	`IncreaseDecreaseInInventories`	$6.68M	USD	Annual
Materials, supplies and fossil fuel	`IncreaseDecreaseInInventories`	$1.49M	USD	Annual
Income tax receivable	`IncreaseDecreaseInIncomeTaxesReceivable`	$3.16M	USD	Annual
Income tax receivable	`IncreaseDecreaseInIncomeTaxesReceivable`	$-3.75M	USD	Annual
Income tax receivable	`IncreaseDecreaseInIncomeTaxesReceivable`	$-2.51M	USD	Annual
Other current assets	`IncreaseDecreaseInPrepaidExpense`	$10.58M	USD	Annual
Other current assets	`IncreaseDecreaseInPrepaidExpense`	$-3.15M	USD	Annual
Other current assets	`IncreaseDecreaseInPrepaidExpense`	$23.32M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-23.77M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-34.27M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-66.92M	USD	Annual
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$-2.01M	USD	Annual
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$447.00K	USD	Annual
Accrued taxes	`IncreaseDecreaseInAccruedTaxesPayable`	$9.98M	USD	Annual
Other current liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$603.00K	USD	Annual
Other current liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$29.59M	USD	Annual
Other current liabilities	`IncreaseDecreaseInOtherAccruedLiabilities`	$19.15M	USD	Annual
Change in margin and collateral accounts assets	`IncreaseDecreaseInDepositOtherAssets`	$-673.00K	USD	Annual
Change in margin and collateral accounts assets	`IncreaseDecreaseInDepositOtherAssets`	$324.00K	USD	Annual
Change in margin and collateral accounts assets	`IncreaseDecreaseInDepositOtherAssets`	$300.00K	USD	Annual
Change in margin and collateral accounts liabilities	`ChangeInMarginAndCollateralAccountsLiabilities`	$-533.00K	USD	Annual
Change in margin and collateral accounts liabilities	`ChangeInMarginAndCollateralAccountsLiabilities`	$17.73M	USD	Annual
Change in margin and collateral accounts liabilities	`ChangeInMarginAndCollateralAccountsLiabilities`	$22.78M	USD	Annual
Change in unrecognized tax benefits	`UnrecognizedTaxBenefitsPeriodIncreaseDecrease`	$1.63M	USD	Annual
Change in unrecognized tax benefits	`UnrecognizedTaxBenefitsPeriodIncreaseDecrease`	$-10.33M	USD	Annual
Change in unrecognized tax benefits	`UnrecognizedTaxBenefitsPeriodIncreaseDecrease`	$5.89M	USD	Annual
Change in long-term regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$14.68M	USD	Annual
Change in long-term regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$45.76M	USD	Annual
Change in long-term regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$-20.54M	USD	Annual
Change in other long-term assets	`IncreaseDecreaseInOtherOperatingAssets`	$-2.43M	USD	Annual
Change in other long-term assets	`IncreaseDecreaseInOtherOperatingAssets`	$68.48M	USD	Annual
Change in other long-term assets	`IncreaseDecreaseInOtherOperatingAssets`	$60.16M	USD	Annual
Change in other long-term liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$-100.72M	USD	Annual
Change in other long-term liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$-82.79M	USD	Annual
Change in other long-term liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$-29.98M	USD	Annual
Net cash flow provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.02B	USD	Annual
Net cash flow provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.09B	USD	Annual
Net cash flow provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$1.12B	USD	Annual
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$1.28B	USD	Annual
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$1.08B	USD	Annual
Capital expenditures	`PaymentsToAcquireProductiveAssets`	$1.41B	USD	Annual
Contributions in aid of construction	`ProceedsFromContributionInAidOfConstruction`	$23.71M	USD	Annual
Contributions in aid of construction	`ProceedsFromContributionInAidOfConstruction`	$64.30M	USD	Annual
Contributions in aid of construction	`ProceedsFromContributionInAidOfConstruction`	$46.55M	USD	Annual
Allowance for borrowed funds used during construction	`AllowanceForFundsUsedDuringConstructionInvestingActivities`	$-16.26M	USD	Annual
Allowance for borrowed funds used during construction	`AllowanceForFundsUsedDuringConstructionInvestingActivities`	$-19.97M	USD	Annual
Allowance for borrowed funds used during construction	`AllowanceForFundsUsedDuringConstructionInvestingActivities`	$-22.11M	USD	Annual
Proceeds from nuclear decommissioning trust sales	`ProceedsFromDecommissioningFund`	$478.81M	USD	Annual
Proceeds from nuclear decommissioning trust sales	`ProceedsFromDecommissioningFund`	$542.25M	USD	Annual
Proceeds from nuclear decommissioning trust sales	`ProceedsFromDecommissioningFund`	$633.41M	USD	Annual
Investment in nuclear decommissioning trust	`PaymentsToInvestInDecommissioningFund`	$635.69M	USD	Annual
Investment in nuclear decommissioning trust	`PaymentsToInvestInDecommissioningFund`	$496.06M	USD	Annual
Investment in nuclear decommissioning trust	`PaymentsToInvestInDecommissioningFund`	$544.53M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$19.08M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$3.18M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$18.65M	USD	Annual
Net cash flow used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.25B	USD	Annual
Net cash flow used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.43B	USD	Annual
Net cash flow used for investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.07B	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$848.24M	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$842.41M	USD	Annual
Issuance of long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$693.15M	USD	Annual
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$415.57M	USD	Annual
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$370.43M	USD	Annual
Repayment of long-term debt	`RepaymentsOfLongTermDebt`	$125.00M	USD	Annual
Short-term borrowings and (repayments) net	`ProceedsFromRepaymentsOfShortTermDebt`	$-147.40M	USD	Annual
Short-term borrowings and (repayments) net	`ProceedsFromRepaymentsOfShortTermDebt`	$-107.80M	USD	Annual
Short-term borrowings and (repayments) net	`ProceedsFromRepaymentsOfShortTermDebt`	$137.20M	USD	Annual
Short-term debt borrowings under revolving credit facility	`ProceedsFromLinesOfCredit`	$58.00M	USD	Annual
Short-term debt borrowings under revolving credit facility	`ProceedsFromLinesOfCredit`	$40.00M	USD	Annual
Short-term debt borrowings under revolving credit facility	`ProceedsFromLinesOfCredit`	-	USD	Annual
Short-term debt repayments under revolving credit facility	`RepaymentsOfLinesOfCredit`	-	USD	Annual
Short-term debt repayments under revolving credit facility	`RepaymentsOfLinesOfCredit`	$32.00M	USD	Annual
Short-term debt repayments under revolving credit facility	`RepaymentsOfLinesOfCredit`	-	USD	Annual
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$260.03M	USD	Annual
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$274.23M	USD	Annual
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$289.79M	USD	Annual
Common stock equity issuance and purchases - net	`ProceedsFromIssuanceOfCommonStock`	$-4.87M	USD	Annual
Common stock equity issuance and purchases - net	`ProceedsFromIssuanceOfCommonStock`	$19.37M	USD	Annual
Common stock equity issuance and purchases - net	`ProceedsFromIssuanceOfCommonStock`	$-13.39M	USD	Annual
Distributions to noncontrolling interests	`PaymentsToMinorityShareholders`	$35.00M	USD	Annual
Distributions to noncontrolling interests	`PaymentsToMinorityShareholders`	$22.74M	USD	Annual
Distributions to noncontrolling interests	`PaymentsToMinorityShareholders`	$22.74M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$1.00K	USD	Annual
Net cash flow provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$315.51M	USD	Annual
Net cash flow provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$3.79M	USD	Annual
Net cash flow provided by financing activities	`NetCashProvidedByUsedInFinancingActivities`	$198.08M	USD	Annual
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$5.01M	USD	Annual
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-30.61M	USD	Annual
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$31.88M	USD	Annual
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$39.49M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$13.89M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$7.60M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$8.88M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$39.49M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$13.89M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$7.60M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF YEAR	`CashAndCashEquivalentsAtCarryingValue`	$8.88M	USD	Point-in-time
Income taxes, net of refunds	`IncomeTaxesPaidNet`	$6.55M	USD	Annual
Income taxes, net of refunds	`IncomeTaxesPaidNet`	$2.19M	USD	Annual
Income taxes, net of refunds	`IncomeTaxesPaidNet`	$9.96M	USD	Annual
Interest, net of amounts capitalized	`InterestPaidNet`	$170.21M	USD	Annual
Interest, net of amounts capitalized	`InterestPaidNet`	$189.29M	USD	Annual
Interest, net of amounts capitalized	`InterestPaidNet`	$184.46M	USD	Annual
Accrued capital expenditures	`CapitalExpendituresIncurredButNotYetPaid`	$114.86M	USD	Annual
Accrued capital expenditures	`CapitalExpendituresIncurredButNotYetPaid`	$130.40M	USD	Annual
Accrued capital expenditures	`CapitalExpendituresIncurredButNotYetPaid`	$83.80M	USD	Annual
Dividends declared but not paid	`DividendsPayableCurrentAndNoncurrent`	$77.67M	USD	Point-in-time
Dividends declared but not paid	`DividendsPayableCurrentAndNoncurrent`	$72.93M	USD	Point-in-time
Dividends declared but not paid	`DividendsPayableCurrentAndNoncurrent`	$69.36M	USD	Point-in-time

Stockholders Equity 45 line items

Line Item	Tag	Value	Unit	Period
Common stock dividends declared (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$2.70	USD	Annual
Common stock dividends declared (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$2.44	USD	Annual
Common stock dividends declared (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$2.56	USD	Annual
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.94B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.72B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.52B	USD	Point-in-time
Beginning balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.14B	USD	Point-in-time
Beginning Balance (in shares)	`CommonStockSharesIssued`	111.39M	shares	Point-in-time
Beginning Balance (in shares)	`CommonStockSharesIssued`	111.82M	shares	Point-in-time
Net income	`ProfitLoss`	$280.94M	USD	1 Quarter
Net income	`ProfitLoss`	$9.33M	USD	1 Quarter
Net income	`ProfitLoss`	$456.19M	USD	Annual
Net income	`ProfitLoss`	$58.12M	USD	1 Quarter
Net income	`ProfitLoss`	$28.18M	USD	1 Quarter
Net income	`ProfitLoss`	$126.18M	USD	1 Quarter
Net income	`ProfitLoss`	$172.32M	USD	1 Quarter
Net income	`ProfitLoss`	$26.50M	USD	1 Quarter
Net income	`ProfitLoss`	$461.53M	USD	Annual
Net income	`ProfitLoss`	$267.90M	USD	1 Quarter
Net income	`ProfitLoss`	$507.95M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$23.39M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$-1.18M	USD	Annual
Other comprehensive income	`OtherComprehensiveIncomeLossNetOfTax`	$926.00K	USD	Annual
Dividends on common stock	`DividendsCommonStock`	$284.76M	USD	Annual
Dividends on common stock	`DividendsCommonStock`	$270.52M	USD	Annual
Dividends on common stock	`DividendsCommonStock`	$301.49M	USD	Annual
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$13.98M	USD	Annual
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$28.70M	USD	Annual
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$18.77M	USD	Annual
Purchase of treasury stock	`TreasuryStockValueAcquiredCostMethod`	$10.14M	USD	Annual
Purchase of treasury stock	`TreasuryStockValueAcquiredCostMethod`	$17.75M	USD	Annual
Purchase of treasury stock	`TreasuryStockValueAcquiredCostMethod`	$9.09M	USD	Annual
Reissuance of treasury stock for stock-based compensation and other	`StockIssuedDuringPeriodValueTreasuryStockReissued`	$7.73M	USD	Annual
Reissuance of treasury stock for stock-based compensation and other	`StockIssuedDuringPeriodValueTreasuryStockReissued`	$16.26M	USD	Annual
Reissuance of treasury stock for stock-based compensation and other	`StockIssuedDuringPeriodValueTreasuryStockReissued`	$10.76M	USD	Annual
Stock compensation cumulative effect adjustments	`CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption`	$45.85M	USD	Point-in-time
Net capital activities by noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$35.00M	USD	Annual
Net capital activities by noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$22.74M	USD	Annual
Net capital activities by noncontrolling interests	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$22.74M	USD	Annual
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.94B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.72B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$4.52B	USD	Point-in-time
Ending balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$5.14B	USD	Point-in-time
Ending Balance (in shares)	`CommonStockSharesIssued`	111.39M	shares	Point-in-time
Ending Balance (in shares)	`CommonStockSharesIssued`	111.82M	shares	Point-in-time

Comprehensive Income 41 line items

Line Item	Tag	Value	Unit	Period
NET INCOME	`ProfitLoss`	$280.94M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$9.33M	USD	1 Quarter
Net unrealized loss, tax (expense)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax`	$585.00K	USD	Annual
NET INCOME	`ProfitLoss`	$456.19M	USD	Annual
NET INCOME	`ProfitLoss`	$58.12M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$28.18M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$126.18M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$172.32M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$26.50M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$461.53M	USD	Annual
Net unrealized loss, tax (expense)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax`	$-24.00K	USD	Annual
NET INCOME	`ProfitLoss`	$267.90M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$507.95M	USD	Annual
Net unrealized loss, tax (expense)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax`	$342.00K	USD	Annual
Reclassification of net realized loss, tax benefit	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-985.00K	USD	Annual
Reclassification of net realized loss, tax benefit	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-1.80M	USD	Annual
Reclassification of net realized loss, tax benefit	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-1.29M	USD	Annual
Pension and other postretirement benefits activity, tax benefit (expense)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$633.00K	USD	Annual
Pension and other postretirement benefits activity, tax benefit (expense)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-13.30M	USD	Annual
Pension and other postretirement benefits activity, tax benefit (expense)	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$693.00K	USD	Annual
Net unrealized loss, net of tax benefit (expense)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-538.00K	USD	Annual
Net unrealized loss, net of tax benefit (expense)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-957.00K	USD	Annual
Net unrealized loss, net of tax benefit (expense)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax`	$-35.00K	USD	Annual
Reclassification of net realized loss, net of tax benefit	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-4.19M	USD	Annual
Reclassification of net realized loss, net of tax benefit	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.94M	USD	Annual
Reclassification of net realized loss, net of tax benefit	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax`	$-2.23M	USD	Annual
Pension and other postretirement benefits activity, net of tax (expense) benefit	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$3.37M	USD	Annual
Pension and other postretirement benefits activity, net of tax (expense) benefit	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-20.16M	USD	Annual
Pension and other postretirement benefits activity, net of tax (expense) benefit	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$1.48M	USD	Annual
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$23.39M	USD	Annual
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-1.18M	USD	Annual
Total other comprehensive income (loss)	`OtherComprehensiveIncomeLossNetOfTax`	$926.00K	USD	Annual
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$506.77M	USD	Annual
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$462.45M	USD	Annual
COMPREHENSIVE INCOME	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$479.58M	USD	Annual
Less: Comprehensive income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$19.49M	USD	Annual
Less: Comprehensive income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$19.49M	USD	Annual
Less: Comprehensive income attributable to noncontrolling interests	`NetIncomeLossAttributableToNoncontrollingInterest`	$18.93M	USD	Annual
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`ComprehensiveIncomeNetOfTax`	$487.28M	USD	Annual
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`ComprehensiveIncomeNetOfTax`	$442.96M	USD	Annual
COMPREHENSIVE INCOME ATTRIBUTABLE TO COMMON SHAREHOLDERS	`ComprehensiveIncomeNetOfTax`	$460.65M	USD	Annual

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