8-K Filing

OGE ENERGY CORP. CIK: 1021635 FY 2017

Filing Information

Form Type	8-K
Accession Number	`0001021635-18-000067`
Period End Date	20171231
Filing Date	20180517
Fiscal Year	2017
Fiscal Period	FY
XBRL Instance	oge-20180517.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 99 Income Statement 115 Cash Flow Statement 112 Stockholders Equity 33 Comprehensive Income 74

Balance Sheet 99 line items

Line Item	Tag	Value	Unit	Period
Allowance for Doubtful Accounts Receivable	`AllowanceForDoubtfulAccountsReceivable`	$1.50M	USD	Point-in-time
Allowance for Doubtful Accounts Receivable	`AllowanceForDoubtfulAccountsReceivable`	$1.50M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$75.20M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$5.50M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$14.40M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$300.00K	USD	Point-in-time
Accounts receivable, less reserve of $1.5 and $1.5, respectively	`AccountsReceivableNetCurrent`	$188.70M	USD	Point-in-time
Accounts receivable, less reserve of $1.5 and $1.5, respectively	`AccountsReceivableNetCurrent`	$173.00M	USD	Point-in-time
Accounts receivable - unconsolidated affiliates	`AccountsReceivableRelatedPartiesCurrent`	$1.90M	USD	Point-in-time
Accounts receivable - unconsolidated affiliates	`AccountsReceivableRelatedPartiesCurrent`	$2.50M	USD	Point-in-time
Accrued unbilled revenues	`UnbilledReceivablesCurrent`	$59.70M	USD	Point-in-time
Accrued unbilled revenues	`UnbilledReceivablesCurrent`	$66.50M	USD	Point-in-time
Income taxes receivable	`IncomeTaxesReceivable`	$5.80M	USD	Point-in-time
Income taxes receivable	`IncomeTaxesReceivable`	$19.40M	USD	Point-in-time
Fuel inventories	`InventoryNet`	$84.30M	USD	Point-in-time
Fuel inventories	`InventoryNet`	$79.80M	USD	Point-in-time
Materials and supplies, at average cost	`OtherInventorySupplies`	$80.80M	USD	Point-in-time
Materials and supplies, at average cost	`OtherInventorySupplies`	$81.70M	USD	Point-in-time
Fuel clause under recoveries	`DeferredFuelCost`	-	USD	Point-in-time
Fuel clause under recoveries	`DeferredFuelCost`	$51.30M	USD	Point-in-time
Other	`OtherAssetsCurrent`	$54.60M	USD	Point-in-time
Other	`OtherAssetsCurrent`	$81.80M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$549.50M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$497.00M	USD	Point-in-time
Investment in unconsolidated affiliates	`EquityMethodInvestments`	$1.16B	USD	Point-in-time
Investment in unconsolidated affiliates	`EquityMethodInvestments`	$1.16B	USD	Point-in-time
Investment in unconsolidated affiliates	`EquityMethodInvestments`	$1.19B	USD	Point-in-time
Other	`OtherLongTermInvestments`	$73.60M	USD	Point-in-time
Other	`OtherLongTermInvestments`	$76.70M	USD	Point-in-time
Total other property and investments	`OtherInvestments`	$1.23B	USD	Point-in-time
Total other property and investments	`OtherInvestments`	$1.24B	USD	Point-in-time
In service	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$10.69B	USD	Point-in-time
In service	`PublicUtilitiesPropertyPlantAndEquipmentPlantInService`	$11.04B	USD	Point-in-time
Construction work in progress	`ConstructionInProgressGross`	$867.50M	USD	Point-in-time
Construction work in progress	`ConstructionInProgressGross`	$495.10M	USD	Point-in-time
Total property, plant and equipment	`PropertyPlantAndEquipmentGross`	$11.91B	USD	Point-in-time
Total property, plant and equipment	`PropertyPlantAndEquipmentGross`	$11.19B	USD	Point-in-time
Less accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$3.57B	USD	Point-in-time
Less accumulated depreciation	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$3.49B	USD	Point-in-time
Net property, plant and equipment	`PropertyPlantAndEquipmentNet`	$8.34B	USD	Point-in-time
Net property, plant and equipment	`PropertyPlantAndEquipmentNet`	$7.70B	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$283.00M	USD	Point-in-time
Regulatory assets	`RegulatoryAssetsNoncurrent`	$404.80M	USD	Point-in-time
Other	`OtherAssetsMiscellaneousNoncurrent`	$55.70M	USD	Point-in-time
Other	`OtherAssetsMiscellaneousNoncurrent`	$56.90M	USD	Point-in-time
Total deferred charges and other assets	`OtherAssetsNoncurrent`	$338.70M	USD	Point-in-time
Total deferred charges and other assets	`OtherAssetsNoncurrent`	$461.70M	USD	Point-in-time
TOTAL ASSETS	`Assets`	$9.94B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$10.41B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$9.58B	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$168.40M	USD	Point-in-time
Short-term debt	`ShortTermBorrowings`	$236.20M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$205.40M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$230.40M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$60.40M	USD	Point-in-time
Dividends payable	`DividendsPayableCurrent`	$66.40M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$80.70M	USD	Point-in-time
Customer deposits	`CustomerDepositsCurrent`	$77.70M	USD	Point-in-time
Accrued taxes	`TaxesPayableCurrent`	$44.50M	USD	Point-in-time
Accrued taxes	`TaxesPayableCurrent`	$41.30M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$40.40M	USD	Point-in-time
Accrued interest	`InterestPayableCurrent`	$44.00M	USD	Point-in-time
Accrued compensation	`EmployeeRelatedLiabilitiesCurrent`	$35.90M	USD	Point-in-time
Accrued compensation	`EmployeeRelatedLiabilitiesCurrent`	$45.10M	USD	Point-in-time
Long-term debt due within one year	`LongTermDebtCurrent`	$224.70M	USD	Point-in-time
Long-term debt due within one year	`LongTermDebtCurrent`	$249.80M	USD	Point-in-time
Fuel clause over recoveries	`CustomerRefundLiabilityCurrent`	$1.70M	USD	Point-in-time
Fuel clause over recoveries	`CustomerRefundLiabilityCurrent`	-	USD	Point-in-time
Other	`OtherLiabilitiesCurrent`	$28.70M	USD	Point-in-time
Other	`OtherLiabilitiesCurrent`	$96.00M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$950.50M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$1.03B	USD	Point-in-time
LONG-TERM DEBT	`LongTermDebtNoncurrent`	$2.75B	USD	Point-in-time
LONG-TERM DEBT	`LongTermDebtNoncurrent`	$2.41B	USD	Point-in-time
Accrued benefit obligations	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$192.70M	USD	Point-in-time
Accrued benefit obligations	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$274.80M	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesNoncurrent`	$1.23B	USD	Point-in-time
Deferred income taxes	`DeferredTaxLiabilitiesNoncurrent`	$2.33B	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$299.70M	USD	Point-in-time
Regulatory liabilities	`RegulatoryLiabilityNoncurrent`	$1.28B	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$153.80M	USD	Point-in-time
Other	`OtherLiabilitiesNoncurrent`	$157.60M	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesOtherThanLongtermDebtNoncurrent`	$2.86B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesOtherThanLongtermDebtNoncurrent`	$3.06B	USD	Point-in-time
Total liabilities	`Liabilities`	$6.50B	USD	Point-in-time
Total liabilities	`Liabilities`	$6.56B	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (NOTE 13)	`CommitmentsAndContingencies`	-	USD	Point-in-time
COMMITMENTS AND CONTINGENCIES (NOTE 13)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stockholders' equity	`CommonStocksIncludingAdditionalPaidInCapital`	$1.11B	USD	Point-in-time
Common stockholders' equity	`CommonStocksIncludingAdditionalPaidInCapital`	$1.11B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$2.37B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$2.76B	USD	Point-in-time
Accumulated other comprehensive loss, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-29.30M	USD	Point-in-time
Accumulated other comprehensive loss, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-35.10M	USD	Point-in-time
Accumulated other comprehensive loss, net of tax	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-23.20M	USD	Point-in-time
Total stockholders' equity	`StockholdersEquity`	$3.44B	USD	Point-in-time
Total stockholders' equity	`StockholdersEquity`	$3.85B	USD	Point-in-time
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	`LiabilitiesAndStockholdersEquity`	$9.94B	USD	Point-in-time
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	`LiabilitiesAndStockholdersEquity`	$10.41B	USD	Point-in-time

Income Statement 115 line items

Line Item	Tag	Value	Unit	Period
Total operating revenues	`Revenues`	$530.80M	USD	1 Quarter
Total operating revenues	`Revenues`	$433.10M	USD	1 Quarter
Total operating revenues	`Revenues`	$716.80M	USD	1 Quarter
Total operating revenues	`Revenues`	$2.26B	USD	Annual
Total operating revenues	`Revenues`	$743.90M	USD	1 Quarter
Total operating revenues	`Revenues`	$2.26B	USD	Annual
Total operating revenues	`Revenues`	$586.40M	USD	1 Quarter
Total operating revenues	`Revenues`	$456.00M	USD	1 Quarter
Total operating revenues	`Revenues`	$501.90M	USD	1 Quarter
Total operating revenues	`Revenues`	$551.40M	USD	1 Quarter
Total operating revenues	`Revenues`	$2.20B	USD	Annual
Total cost of sales	`CostOfGoodsAndServicesSold`	$880.10M	USD	Annual
Total cost of sales	`CostOfGoodsAndServicesSold`	$865.00M	USD	Annual
Total cost of sales	`CostOfGoodsAndServicesSold`	$897.60M	USD	Annual
Other operation and maintenance	`OtherCostAndExpenseOperating`	$455.90M	USD	Annual
Other operation and maintenance	`OtherCostAndExpenseOperating`	$426.70M	USD	Annual
Other operation and maintenance	`OtherCostAndExpenseOperating`	$459.60M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$283.50M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$307.90M	USD	Annual
Depreciation and amortization	`DepreciationAndAmortization`	$322.60M	USD	Annual
Taxes other than income	`TaxesExcludingIncomeAndExciseTaxes`	$87.60M	USD	Annual
Taxes other than income	`TaxesExcludingIncomeAndExciseTaxes`	$89.40M	USD	Annual
Taxes other than income	`TaxesExcludingIncomeAndExciseTaxes`	$91.20M	USD	Annual
Total operating expenses	`OperatingExpenses`	$825.80M	USD	Annual
Total operating expenses	`OperatingExpenses`	$866.10M	USD	Annual
Total operating expenses	`OperatingExpenses`	$832.50M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$81.30M	USD	1 Quarter
Operating income (loss)	`OperatingIncomeLoss`	$38.50M	USD	1 Quarter
Operating income (loss)	`OperatingIncomeLoss`	$135.20M	USD	1 Quarter
Operating income (loss)	`OperatingIncomeLoss`	$258.00M	USD	1 Quarter
Operating income (loss)	`OperatingIncomeLoss`	$45.70M	USD	1 Quarter
Operating income (loss)	`OperatingIncomeLoss`	$513.00M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$244.50M	USD	1 Quarter
Operating income (loss)	`OperatingIncomeLoss`	$531.00M	USD	Annual
Operating income (loss)	`OperatingIncomeLoss`	$145.80M	USD	1 Quarter
Operating income (loss)	`OperatingIncomeLoss`	$95.00M	USD	1 Quarter
Operating income (loss)	`OperatingIncomeLoss`	$506.10M	USD	Annual
Equity in earnings of unconsolidated affiliates	`IncomeLossFromEquityMethodInvestments`	$131.20M	USD	Annual
Equity in earnings of unconsolidated affiliates	`IncomeLossFromEquityMethodInvestments`	$101.80M	USD	Annual
Equity in earnings of unconsolidated affiliates	`IncomeLossFromEquityMethodInvestments`	$15.50M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$14.20M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$8.30M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$39.70M	USD	Annual
Pension and Other Postretirement Benefits Cost (Reversal of Cost)	`PensionAndOtherPostretirementBenefitExpense`	$20.70M	USD	Annual
Pension and Other Postretirement Benefits Cost (Reversal of Cost)	`PensionAndOtherPostretirementBenefitExpense`	$24.90M	USD	Annual
Pension and Other Postretirement Benefits Cost (Reversal of Cost)	`PensionAndOtherPostretirementBenefitExpense`	$9.70M	USD	Annual
Other income	`OtherNonoperatingIncome`	$46.40M	USD	Annual
Other income	`OtherNonoperatingIncome`	$27.00M	USD	Annual
Other income	`OtherNonoperatingIncome`	$26.00M	USD	Annual
Other expense	`OtherNonoperatingExpense`	$16.90M	USD	Annual
Other expense	`OtherNonoperatingExpense`	$14.10M	USD	Annual
Other expense	`OtherNonoperatingExpense`	$14.30M	USD	Annual
Net other income	`NonoperatingIncomeExpense`	$115.40M	USD	Annual
Net other income	`NonoperatingIncomeExpense`	$11.60M	USD	Annual
Net other income	`NonoperatingIncomeExpense`	$182.50M	USD	Annual
Interest on long-term debt	`InterestExpenseLongTermDebt`	$147.80M	USD	Annual
Interest on long-term debt	`InterestExpenseLongTermDebt`	$153.60M	USD	Annual
Interest on long-term debt	`InterestExpenseLongTermDebt`	$143.20M	USD	Annual
Allowance for borrowed funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$18.00M	USD	Annual
Allowance for borrowed funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$7.50M	USD	Annual
Allowance for borrowed funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionAdditions`	$4.20M	USD	Annual
Interest on short-term debt and other interest charges	`InterestExpenseShortTermBorrowings`	$6.40M	USD	Annual
Interest on short-term debt and other interest charges	`InterestExpenseShortTermBorrowings`	$5.40M	USD	Annual
Interest on short-term debt and other interest charges	`InterestExpenseShortTermBorrowings`	$8.20M	USD	Annual
Interest expense	`InterestExpense`	$149.00M	USD	Annual
Interest expense	`InterestExpense`	$143.80M	USD	Annual
Interest expense	`InterestExpense`	$142.10M	USD	Annual
INCOME BEFORE TAXES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$368.70M	USD	Annual
INCOME BEFORE TAXES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$486.30M	USD	Annual
INCOME BEFORE TAXES	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$569.70M	USD	Annual
INCOME TAX (BENEFIT) EXPENSE	`IncomeTaxExpenseBenefit`	$-49.30M	USD	Annual
INCOME TAX (BENEFIT) EXPENSE	`IncomeTaxExpenseBenefit`	$97.40M	USD	Annual
INCOME TAX (BENEFIT) EXPENSE	`IncomeTaxExpenseBenefit`	$148.10M	USD	Annual
NET INCOME	`ProfitLoss`	$36.00M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$104.80M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$338.20M	USD	Annual
NET INCOME	`ProfitLoss`	$294.80M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$71.50M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$57.90M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$619.00M	USD	Annual
NET INCOME	`ProfitLoss`	$183.60M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$271.30M	USD	Annual
NET INCOME	`ProfitLoss`	$183.40M	USD	1 Quarter
NET INCOME	`ProfitLoss`	$25.20M	USD	1 Quarter
BASIC AVERAGE COMMON SHARES OUTSTANDING	`WeightedAverageNumberOfSharesOutstandingBasic`	199.70M	shares	Annual
BASIC AVERAGE COMMON SHARES OUTSTANDING	`WeightedAverageNumberOfSharesOutstandingBasic`	199.60M	shares	Annual
BASIC AVERAGE COMMON SHARES OUTSTANDING	`WeightedAverageNumberOfSharesOutstandingBasic`	199.70M	shares	Annual
DILUTED AVERAGE COMMON SHARES OUTSTANDING	`WeightedAverageNumberOfDilutedSharesOutstanding`	199.60M	shares	Annual
DILUTED AVERAGE COMMON SHARES OUTSTANDING	`WeightedAverageNumberOfDilutedSharesOutstanding`	199.90M	shares	Annual
DILUTED AVERAGE COMMON SHARES OUTSTANDING	`WeightedAverageNumberOfDilutedSharesOutstanding`	200.00M	shares	Annual
BASIC EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareBasic`	$3.10	USD	Annual
BASIC EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareBasic`	$0.29	USD	1 Quarter
BASIC EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareBasic`	$0.52	USD	1 Quarter
BASIC EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareBasic`	$1.48	USD	1 Quarter
BASIC EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareBasic`	$1.69	USD	Annual
BASIC EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareBasic`	$0.92	USD	1 Quarter
BASIC EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareBasic`	$1.36	USD	Annual
BASIC EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareBasic`	$0.18	USD	1 Quarter
BASIC EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareBasic`	$0.92	USD	1 Quarter
BASIC EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareBasic`	$0.13	USD	1 Quarter
BASIC EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareBasic`	$0.35	USD	1 Quarter
DILUTED EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareDiluted`	$3.10	USD	Annual
DILUTED EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareDiluted`	$0.35	USD	1 Quarter
DILUTED EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareDiluted`	$0.92	USD	1 Quarter
DILUTED EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareDiluted`	$1.36	USD	Annual
DILUTED EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareDiluted`	$0.29	USD	1 Quarter
DILUTED EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareDiluted`	$0.13	USD	1 Quarter
DILUTED EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareDiluted`	$0.92	USD	1 Quarter
DILUTED EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareDiluted`	$1.69	USD	Annual
DILUTED EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareDiluted`	$1.48	USD	1 Quarter
DILUTED EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareDiluted`	$0.18	USD	1 Quarter
DILUTED EARNINGS PER AVERAGE COMMON SHARE	`EarningsPerShareDiluted`	$0.52	USD	1 Quarter
DIVIDENDS DECLARED PER COMMON SHARE	`CommonStockDividendsPerShareDeclared`	$1.27	USD	Annual
DIVIDENDS DECLARED PER COMMON SHARE	`CommonStockDividendsPerShareDeclared`	$1.05	USD	Annual
DIVIDENDS DECLARED PER COMMON SHARE	`CommonStockDividendsPerShareDeclared`	$1.16	USD	Annual

Cash Flow Statement 112 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$36.00M	USD	1 Quarter
Net income	`ProfitLoss`	$104.80M	USD	1 Quarter
Net income	`ProfitLoss`	$338.20M	USD	Annual
Net income	`ProfitLoss`	$294.80M	USD	1 Quarter
Net income	`ProfitLoss`	$71.50M	USD	1 Quarter
Net income	`ProfitLoss`	$57.90M	USD	1 Quarter
Net income	`ProfitLoss`	$619.00M	USD	Annual
Net income	`ProfitLoss`	$183.60M	USD	1 Quarter
Net income	`ProfitLoss`	$271.30M	USD	Annual
Net income	`ProfitLoss`	$183.40M	USD	1 Quarter
Net income	`ProfitLoss`	$25.20M	USD	1 Quarter
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$283.50M	USD	Annual
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$307.90M	USD	Annual
Depreciation and amortization	`DepreciationAmortizationAndAccretionNet`	$322.60M	USD	Annual
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndTaxCredits`	$-50.00M	USD	Annual
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndTaxCredits`	$153.80M	USD	Annual
Deferred income taxes and investment tax credits, net	`DeferredIncomeTaxesAndTaxCredits`	$102.60M	USD	Annual
Equity in earnings of unconsolidated affiliates	`IncomeLossFromEquityMethodInvestments`	$131.20M	USD	Annual
Equity in earnings of unconsolidated affiliates	`IncomeLossFromEquityMethodInvestments`	$101.80M	USD	Annual
Equity in earnings of unconsolidated affiliates	`IncomeLossFromEquityMethodInvestments`	$15.50M	USD	Annual
Distributions from unconsolidated affiliates	`Increasedecreaseindistributionsfromunconsolidatedaffiliates`	$94.10M	USD	Annual
Distributions from unconsolidated affiliates	`Increasedecreaseindistributionsfromunconsolidatedaffiliates`	$131.20M	USD	Annual
Distributions from unconsolidated affiliates	`Increasedecreaseindistributionsfromunconsolidatedaffiliates`	$102.30M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$14.20M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$8.30M	USD	Annual
Allowance for equity funds used during construction	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$39.70M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$9.10M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$4.70M	USD	Annual
Stock-based compensation	`ShareBasedCompensation`	$7.60M	USD	Annual
Regulatory assets	`IncreaseDecreaseInRegulatoryAssetsNoncurrent`	$-3.70M	USD	Annual
Regulatory assets	`IncreaseDecreaseInRegulatoryAssetsNoncurrent`	$21.40M	USD	Annual
Regulatory assets	`IncreaseDecreaseInRegulatoryAssetsNoncurrent`	$9.10M	USD	Annual
Regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilitiesNoncurrent`	$-11.80M	USD	Annual
Regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilitiesNoncurrent`	$-27.50M	USD	Annual
Regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilitiesNoncurrent`	$-3.70M	USD	Annual
Other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$-15.40M	USD	Annual
Other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$-10.40M	USD	Annual
Other assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$700.00K	USD	Annual
Other liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-18.90M	USD	Annual
Other liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$8.60M	USD	Annual
Other liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-65.50M	USD	Annual
Accounts receivable and accrued unbilled revenues, net	`IncreaseDecreaseInAccountsReceivable`	$21.80M	USD	Annual
Accounts receivable and accrued unbilled revenues, net	`IncreaseDecreaseInAccountsReceivable`	$-21.60M	USD	Annual
Accounts receivable and accrued unbilled revenues, net	`IncreaseDecreaseInAccountsReceivable`	$6.90M	USD	Annual
Income taxes receivable	`IncreaseDecreaseInIncomeTaxesReceivable`	$2.20M	USD	Annual
Income taxes receivable	`IncreaseDecreaseInIncomeTaxesReceivable`	$-13.60M	USD	Annual
Income taxes receivable	`IncreaseDecreaseInIncomeTaxesReceivable`	$1.20M	USD	Annual
Fuel, materials and supplies inventories	`IncreaseDecreaseInInventories`	$3.60M	USD	Annual
Fuel, materials and supplies inventories	`IncreaseDecreaseInInventories`	$56.50M	USD	Annual
Fuel, materials and supplies inventories	`IncreaseDecreaseInInventories`	$-32.40M	USD	Annual
Fuel recoveries	`IncreaseDecreaseInDeferredFuelCosts`	$-129.60M	USD	Annual
Fuel recoveries	`IncreaseDecreaseInDeferredFuelCosts`	$-53.00M	USD	Annual
Fuel recoveries	`IncreaseDecreaseInDeferredFuelCosts`	$112.60M	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$26.20M	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$17.20M	USD	Annual
Other current assets	`IncreaseDecreaseInOtherCurrentAssets`	$-27.20M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$30.90M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$27.10M	USD	Annual
Accounts payable	`IncreaseDecreaseInAccountsPayable`	$-45.10M	USD	Annual
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$17.80M	USD	Annual
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$36.40M	USD	Annual
Other current liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-66.70M	USD	Annual
Net cash provided from operating activities	`NetCashProvidedByUsedInOperatingActivities`	$784.50M	USD	Annual
Net cash provided from operating activities	`NetCashProvidedByUsedInOperatingActivities`	$867.10M	USD	Annual
Net cash provided from operating activities	`NetCashProvidedByUsedInOperatingActivities`	$644.70M	USD	Annual
Capital expenditures (less allowance for equity funds used during construction)	`PaymentsToAcquireProductiveAssets`	$824.10M	USD	Annual
Capital expenditures (less allowance for equity funds used during construction)	`PaymentsToAcquireProductiveAssets`	$547.80M	USD	Annual
Capital expenditures (less allowance for equity funds used during construction)	`PaymentsToAcquireProductiveAssets`	$660.10M	USD	Annual
Return of capital - equity method investments	`ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital`	$45.20M	USD	Annual
Return of capital - equity method investments	`ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital`	$10.00M	USD	Annual
Return of capital - equity method investments	`ProceedsFromEquityMethodInvestmentDividendsOrDistributionsReturnOfCapital`	$38.80M	USD	Annual
Proceeds from sale of assets	`ProceedsFromSaleOfProductiveAssets`	$700.00K	USD	Annual
Proceeds from sale of assets	`ProceedsFromSaleOfProductiveAssets`	$900.00K	USD	Annual
Proceeds from sale of assets	`ProceedsFromSaleOfProductiveAssets`	$2.50M	USD	Annual
Investment in unconsolidated affiliates	`InvestmentsInAndAdvancesToAffiliatesAtFairValuePeriodIncreaseDecrease`	-	USD	Annual
Investment in unconsolidated affiliates	`InvestmentsInAndAdvancesToAffiliatesAtFairValuePeriodIncreaseDecrease`	$-8.50M	USD	Annual
Investment in unconsolidated affiliates	`InvestmentsInAndAdvancesToAffiliatesAtFairValuePeriodIncreaseDecrease`	-	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-620.40M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-821.90M	USD	Annual
Net cash used in investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-500.10M	USD	Annual
Proceeds from long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	$592.10M	USD	Annual
Proceeds from long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	Annual
Proceeds from long-term debt	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	Annual
Issuance (expense) of common stock	`ProceedsFromIssuanceOfCommonStock`	$7.20M	USD	Annual
Issuance (expense) of common stock	`ProceedsFromIssuanceOfCommonStock`	$-100.00K	USD	Annual
Issuance (expense) of common stock	`ProceedsFromIssuanceOfCommonStock`	-	USD	Annual
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$204.60M	USD	Annual
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$225.10M	USD	Annual
Dividends paid on common stock	`PaymentsOfDividendsCommonStock`	$247.60M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-1.70M	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	-	USD	Annual
Other	`ProceedsFromPaymentsForOtherFinancingActivities`	$-100.00K	USD	Annual
Payment of long-term debt	`RepaymentsOfLongTermDebt`	$200.00K	USD	Annual
Payment of long-term debt	`RepaymentsOfLongTermDebt`	$225.10M	USD	Annual
Payment of long-term debt	`RepaymentsOfLongTermDebt`	$110.20M	USD	Annual
(Decrease) increase in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-98.00M	USD	Annual
(Decrease) increase in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-67.80M	USD	Annual
(Decrease) increase in short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$236.20M	USD	Annual
Net cash provided from (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-99.20M	USD	Annual
Net cash provided from (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-297.30M	USD	Annual
Net cash provided from (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$51.50M	USD	Annual
NET CHANGE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$14.10M	USD	Annual
NET CHANGE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-74.90M	USD	Annual
NET CHANGE IN CASH AND CASH EQUIVALENTS	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$69.70M	USD	Annual
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValue`	$75.20M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValue`	$5.50M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValue`	$14.40M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	`CashAndCashEquivalentsAtCarryingValue`	$300.00K	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValue`	$75.20M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValue`	$5.50M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValue`	$14.40M	USD	Point-in-time
CASH AND CASH EQUIVALENTS AT END OF PERIOD	`CashAndCashEquivalentsAtCarryingValue`	$300.00K	USD	Point-in-time

Stockholders Equity 33 line items

Line Item	Tag	Value	Unit	Period
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	199.70M	shares	Point-in-time
Common Stock, Shares, Outstanding	`CommonStockSharesOutstanding`	199.70M	shares	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.85B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.44B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.24B	USD	Point-in-time
Net income	`ProfitLoss`	$36.00M	USD	1 Quarter
Net income	`ProfitLoss`	$104.80M	USD	1 Quarter
Net income	`ProfitLoss`	$338.20M	USD	Annual
Net income	`ProfitLoss`	$294.80M	USD	1 Quarter
Net income	`ProfitLoss`	$71.50M	USD	1 Quarter
Net income	`ProfitLoss`	$57.90M	USD	1 Quarter
Net income	`ProfitLoss`	$619.00M	USD	Annual
Net income	`ProfitLoss`	$183.60M	USD	1 Quarter
Net income	`ProfitLoss`	$271.30M	USD	Annual
Net income	`ProfitLoss`	$183.40M	USD	1 Quarter
Net income	`ProfitLoss`	$25.20M	USD	1 Quarter
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification	`NewAccountingPronouncementOrChangeInAccountingPrincipleEffectOfAdoptionQuantification`	$22.30M	USD	Annual
Other comprehensive income, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$10.60M	USD	Annual
Other comprehensive income, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$5.80M	USD	Annual
Other comprehensive income, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$6.30M	USD	Annual
Dividends declared on common stock	`DividendsCommonStockCash`	$209.70M	USD	Annual
Dividends declared on common stock	`DividendsCommonStockCash`	$230.70M	USD	Annual
Dividends declared on common stock	`DividendsCommonStockCash`	$253.60M	USD	Annual
Expense of common stock	`StockIssuedDuringPeriodValueNewIssues`	$7.20M	USD	Annual
Expense of common stock	`StockIssuedDuringPeriodValueNewIssues`	$-100.00K	USD	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$6.50M	USD	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$4.50M	USD	Annual
Stock-based compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$9.10M	USD	Annual
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.85B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.44B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.33B	USD	Point-in-time
Balance	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$3.24B	USD	Point-in-time

Comprehensive Income 74 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$36.00M	USD	1 Quarter
Net income	`ProfitLoss`	$104.80M	USD	1 Quarter
Net income	`ProfitLoss`	$338.20M	USD	Annual
Net income	`ProfitLoss`	$294.80M	USD	1 Quarter
Net income	`ProfitLoss`	$71.50M	USD	1 Quarter
Net income	`ProfitLoss`	$57.90M	USD	1 Quarter
Net income	`ProfitLoss`	$619.00M	USD	Annual
Net income	`ProfitLoss`	$183.60M	USD	1 Quarter
Net income	`ProfitLoss`	$271.30M	USD	Annual
Net income	`ProfitLoss`	$183.40M	USD	1 Quarter
Net income	`ProfitLoss`	$25.20M	USD	1 Quarter
Amortization of deferred net loss, net of tax of $1.4, $1.7 and $2.2, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	$2.20M	USD	Annual
Amortization of deferred net loss, net of tax of $1.4, $1.7 and $2.2, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	$1.70M	USD	Annual
Amortization of deferred net loss, net of tax of $1.4, $1.7 and $2.2, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossTax`	$1.40M	USD	Annual
Net gain (loss) arising during the period, net of tax of $0.2, ($0.6) and ($5.8), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$200.00K	USD	Annual
Net gain (loss) arising during the period, net of tax of $0.2, ($0.6) and ($5.8), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-600.00K	USD	Annual
Net gain (loss) arising during the period, net of tax of $0.2, ($0.6) and ($5.8), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-5.80M	USD	Annual
Amortization of deferred net loss, net of tax of $1.4, $1.7 and $2.2, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-2.50M	USD	Annual
Amortization of deferred net loss, net of tax of $1.4, $1.7 and $2.2, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-2.50M	USD	Annual
Amortization of prior service cost, net of tax of $0.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeAmortizationOfDefinedBenefitPensionPlansNetPriorServiceCostRecognizedinNetPeriodicPensionCostTax`	-	USD	Annual
Amortization of prior service cost, net of tax of $0.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeAmortizationOfDefinedBenefitPensionPlansNetPriorServiceCostRecognizedinNetPeriodicPensionCostTax`	-	USD	Annual
Amortization of deferred net loss, net of tax of $1.4, $1.7 and $2.2, respectively	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-2.80M	USD	Annual
Amortization of prior service cost, net of tax of $0.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeAmortizationOfDefinedBenefitPensionPlansNetPriorServiceCostRecognizedinNetPeriodicPensionCostTax`	-	USD	Annual
Settlement cost, net of tax of $1.4, $3.2 and $2.9, respectively	`OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax`	$1.40M	USD	Annual
Settlement cost, net of tax of $1.4, $3.2 and $2.9, respectively	`OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax`	$3.20M	USD	Annual
Amortization of prior service cost, net of tax of $0.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeAmortizationofDefinedBenefitPensionPlanandRestorationNetPriorServiceCostRecognizedinNetPeriodicPensionCostNetofTax`	-	USD	Annual
Amortization of prior service cost, net of tax of $0.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeAmortizationofDefinedBenefitPensionPlanandRestorationNetPriorServiceCostRecognizedinNetPeriodicPensionCostNetofTax`	-	USD	Annual
Settlement cost, net of tax of $1.4, $3.2 and $2.9, respectively	`OtherComprehensiveIncomeFinalizationOfPensionAndNonPensionPostretirementPlanValuationTax`	$2.90M	USD	Annual
Amortization of prior service cost, net of tax of $0.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeAmortizationofDefinedBenefitPensionPlanandRestorationNetPriorServiceCostRecognizedinNetPeriodicPensionCostNetofTax`	$100.00K	USD	Annual
Net gain (loss) arising during the period, net of tax of $0.2, ($0.6) and ($5.8), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$400.00K	USD	Annual
Net gain (loss) arising during the period, net of tax of $0.2, ($0.6) and ($5.8), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-9.50M	USD	Annual
Net gain (loss) arising during the period, net of tax of $0.2, ($0.6) and ($5.8), respectively	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-700.00K	USD	Annual
Settlement cost, net of tax of $0.2, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeLossPriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicBenefitCostTaxEffect`	-	USD	Annual
Settlement cost, net of tax of $0.2, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeLossPriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicBenefitCostTaxEffect`	-	USD	Annual
Settlement cost, net of tax of $0.2, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeLossPriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicBenefitCostTaxEffect`	$200.00K	USD	Annual
Settlement cost, net of tax of $1.4, $3.2 and $2.9, respectively	`OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax`	$2.20M	USD	Annual
Settlement cost, net of tax of $1.4, $3.2 and $2.9, respectively	`OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax`	$5.00M	USD	Annual
Settlement cost, net of tax of $1.4, $3.2 and $2.9, respectively	`OtherComprehensiveIncomeLossFinalizationOfPensionAndNonPensionPostretirementPlanValuationNetOfTax`	$4.60M	USD	Annual
Prior service cost arising during the period, net of tax of $4.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	-	USD	Annual
Prior service cost arising during the period, net of tax of $4.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	$-4.00M	USD	Annual
Prior service cost arising during the period, net of tax of $4.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	-	USD	Annual
Amortization of deferred net loss, net of tax of $0.0, $0.0 and $0.8, respectively	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax`	-	USD	Annual
Amortization of deferred net loss, net of tax of $0.0, $0.0 and $0.8, respectively	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax`	$800.00K	USD	Annual
Amortization of prior service cost, net of tax of ($0.3), ($1.0) and ($1.1), respectively	`OtherComprehensiveIncomeAmortizationOfDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicPostretirementCostNetOfTax`	$-1.80M	USD	Annual
Amortization of prior service cost, net of tax of ($0.3), ($1.0) and ($1.1), respectively	`OtherComprehensiveIncomeAmortizationOfDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicPostretirementCostNetOfTax`	$-1.50M	USD	Annual
Amortization of prior service cost, net of tax of ($0.3), ($1.0) and ($1.1), respectively	`OtherComprehensiveIncomeAmortizationOfDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicPostretirementCostNetOfTax`	$-600.00K	USD	Annual
Amortization of deferred net loss, net of tax of $0.0, $0.0 and $0.8, respectively	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostTax`	-	USD	Annual
Amortization of deferred net loss, net of tax of $0.0, $0.0 and $0.8, respectively	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax`	-	USD	Annual
Amortization of deferred net loss, net of tax of $0.0, $0.0 and $0.8, respectively	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax`	$-1.20M	USD	Annual
Amortization of deferred net loss, net of tax of $0.0, $0.0 and $0.8, respectively	`OtherComprehensiveIncomeReclassificationOfDefinedBenefitPostretirementPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax`	-	USD	Annual
Net (loss) gain arising during the period, net of tax of ($0.2), $0.1 and $5.6, respectively	`OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$100.00K	USD	Annual
Net (loss) gain arising during the period, net of tax of ($0.2), $0.1 and $5.6, respectively	`OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$5.60M	USD	Annual
Net (loss) gain arising during the period, net of tax of ($0.2), $0.1 and $5.6, respectively	`OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-200.00K	USD	Annual
Prior service cost arising during the period, net of tax of $4.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$6.30M	USD	Annual
Prior service cost arising during the period, net of tax of $4.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	-	USD	Annual
Amortization of prior service cost, net of tax of ($0.3), ($1.0) and ($1.1), respectively	`OtherComprehensiveIncomeLossAmortizationDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostTaxEffect`	$-300.00K	USD	Annual
Prior service cost arising during the period, net of tax of $4.0, $0.0 and $0.0, respectively	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	-	USD	Annual
Amortization of prior service cost, net of tax of ($0.3), ($1.0) and ($1.1), respectively	`OtherComprehensiveIncomeLossAmortizationDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostTaxEffect`	$-1.00M	USD	Annual
Amortization of prior service cost, net of tax of ($0.3), ($1.0) and ($1.1), respectively	`OtherComprehensiveIncomeLossAmortizationDefinedBenefitPostretirementPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostTaxEffect`	$-1.10M	USD	Annual
Amortization of deferred interest rate swap hedging losses, net of tax of $0, $0 and $0.0, respectively	`OtherComprehensiveIncomeReclassificationAdjustmentOnInterestRateSwapsIncludedInNetIncomeTax`	-	USD	Annual
Amortization of deferred interest rate swap hedging losses, net of tax of $0, $0 and $0.0, respectively	`OtherComprehensiveIncomeReclassificationAdjustmentOnInterestRateSwapsIncludedInNetIncomeTax`	-	USD	Annual
Net (loss) gain arising during the period, net of tax of ($0.2), $0.1 and $5.6, respectively	`OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-600.00K	USD	Annual
Net (loss) gain arising during the period, net of tax of ($0.2), $0.1 and $5.6, respectively	`OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$9.30M	USD	Annual
Amortization of deferred interest rate swap hedging losses, net of tax of $0, $0 and $0.0, respectively	`OtherComprehensiveIncomeReclassificationAdjustmentOnInterestRateSwapsIncludedInNetIncomeTax`	-	USD	Annual
Net (loss) gain arising during the period, net of tax of ($0.2), $0.1 and $5.6, respectively	`OtherComprehensiveIncomePostretirementPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$200.00K	USD	Annual
Settlement cost, net of tax of $0.2, $0.0 and $0.0, respectively	`OtherComprehensiveIncomePriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicPostretirementCostNetOfTax`	-	USD	Annual
Settlement cost, net of tax of $0.2, $0.0 and $0.0, respectively	`OtherComprehensiveIncomePriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicPostretirementCostNetOfTax`	-	USD	Annual
Settlement cost, net of tax of $0.2, $0.0 and $0.0, respectively	`OtherComprehensiveIncomePriorServiceCreditArisingDuringPeriodRecognizedInNetPeriodicPostretirementCostNetOfTax`	$500.00K	USD	Annual
Other comprehensive income, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$10.60M	USD	Annual
Other comprehensive income, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$5.80M	USD	Annual
Other comprehensive income, net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$6.30M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$629.60M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$277.60M	USD	Annual
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$344.00M	USD	Annual

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