10-Q Filing

BLACK HILLS CORP /SD/ CIK: 1130464 Q3 2018

Filing Information

Form Type	10-Q
Accession Number	`0001130464-18-000053`
Period End Date	20180930
Filing Date	20181106
Fiscal Year	2018
Fiscal Period	Q3
XBRL Instance	bkh-20180930.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 155 Income Statement 128 Cash Flow Statement 84 Comprehensive Income 36

Balance Sheet 155 line items

Line Item	Tag	Value	Unit	Period
Common Stock, Par Value (usd per share)	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common Stock, Par Value (usd per share)	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common Stock, Par Value (usd per share)	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common Stock, Shares Issued	`CommonStockSharesIssued`	53.58M	shares	Point-in-time
Common Stock, Shares Issued	`CommonStockSharesIssued`	53.66M	shares	Point-in-time
Common Stock, Shares Issued	`CommonStockSharesIssued`	53.52M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$13.45M	USD	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$15.42M	USD	Point-in-time
Treasury Stock, Shares	`TreasuryStockShares`	72,915.00	shares	Point-in-time
Treasury Stock, Shares	`TreasuryStockShares`	41,457.00	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$10.00M	USD	Point-in-time
Treasury Stock, Shares	`TreasuryStockShares`	39,064.00	shares	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Restricted cash	`RestrictedCashAndInvestmentsCurrent`	$2.68M	USD	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Restricted cash	`RestrictedCashAndInvestmentsCurrent`	$2.82M	USD	Point-in-time
Restricted cash	`RestrictedCashAndInvestmentsCurrent`	$3.24M	USD	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$150.32M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$248.33M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$152.80M	USD	Point-in-time
Materials, supplies and fuel	`InventoryNet`	$113.28M	USD	Point-in-time
Materials, supplies and fuel	`InventoryNet`	$122.62M	USD	Point-in-time
Materials, supplies and fuel	`InventoryNet`	$122.87M	USD	Point-in-time
Derivative assets, current	`DerivativeAssetsCurrent`	$433.00K	USD	Point-in-time
Derivative assets, current	`DerivativeAssetsCurrent`	$304.00K	USD	Point-in-time
Derivative assets, current	`DerivativeAssetsCurrent`	$1.39M	USD	Point-in-time
Income tax receivable, net	`IncomeTaxesReceivable`	-	USD	Point-in-time
Income tax receivable, net	`IncomeTaxesReceivable`	-	USD	Point-in-time
Income tax receivable, net	`IncomeTaxesReceivable`	$11.03M	USD	Point-in-time
Regulatory assets, current	`RegulatoryAssetsCurrent`	$81.02M	USD	Point-in-time
Regulatory assets, current	`RegulatoryAssetsCurrent`	$61.02M	USD	Point-in-time
Regulatory assets, current	`RegulatoryAssetsCurrent`	$48.30M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$25.59M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$25.37M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$32.69M	USD	Point-in-time
Current assets held for sale	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$84.24M	USD	Point-in-time
Current assets held for sale	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$2.85M	USD	Point-in-time
Current assets held for sale	`AssetsOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$8.65M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$570.78M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$385.02M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$384.92M	USD	Point-in-time
Investments	`LongTermInvestments`	$13.09M	USD	Point-in-time
Investments	`LongTermInvestments`	$12.95M	USD	Point-in-time
Investments	`LongTermInvestments`	$41.20M	USD	Point-in-time
Property, plant and equipment	`PropertyPlantAndEquipmentGross`	$5.50B	USD	Point-in-time
Property, plant and equipment	`PropertyPlantAndEquipmentGross`	$5.57B	USD	Point-in-time
Property, plant and equipment	`PropertyPlantAndEquipmentGross`	$5.82B	USD	Point-in-time
Less: accumulated depreciation and depletion	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$1.12B	USD	Point-in-time
Less: accumulated depreciation and depletion	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$1.00B	USD	Point-in-time
Less: accumulated depreciation and depletion	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$1.03B	USD	Point-in-time
Total property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$4.54B	USD	Point-in-time
Total property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$4.70B	USD	Point-in-time
Total property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$4.50B	USD	Point-in-time
Goodwill	`Goodwill`	$1.30B	USD	Point-in-time
Goodwill	`Goodwill`	$1.30B	USD	Point-in-time
Goodwill	`Goodwill`	$1.30B	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$6.95M	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$7.56M	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$7.76M	USD	Point-in-time
Regulatory assets, non-current	`RegulatoryAssetsNoncurrent`	$212.05M	USD	Point-in-time
Regulatory assets, non-current	`RegulatoryAssetsNoncurrent`	$216.44M	USD	Point-in-time
Regulatory assets, non-current	`RegulatoryAssetsNoncurrent`	$239.57M	USD	Point-in-time
Other assets, non-current	`OtherAssetsNoncurrent`	$17.14M	USD	Point-in-time
Other assets, non-current	`OtherAssetsNoncurrent`	$11.63M	USD	Point-in-time
Other assets, non-current	`OtherAssetsNoncurrent`	$10.15M	USD	Point-in-time
Noncurrent assets held for sale	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	-	USD	Point-in-time
Noncurrent assets held for sale	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	-	USD	Point-in-time
Noncurrent assets held for sale	`DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent`	$108.69M	USD	Point-in-time
Total other assets, non-current	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.67B	USD	Point-in-time
Total other assets, non-current	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.54B	USD	Point-in-time
Total other assets, non-current	`AssetsNoncurrentOtherThanNoncurrentInvestmentsAndPropertyPlantAndEquipment`	$1.53B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$6.66B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$6.66B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$6.56B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$94.79M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$160.89M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$115.90M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$206.78M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$219.46M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$201.35M	USD	Point-in-time
Derivative liabilities, current	`DerivativeLiabilitiesCurrent`	$1.15M	USD	Point-in-time
Derivative liabilities, current	`DerivativeLiabilitiesCurrent`	$1.46M	USD	Point-in-time
Derivative liabilities, current	`DerivativeLiabilitiesCurrent`	$2.08M	USD	Point-in-time
Accrued income taxes, net	`AccruedIncomeTaxes`	$5.59M	USD	Point-in-time
Accrued income taxes, net	`AccruedIncomeTaxes`	$1.02M	USD	Point-in-time
Accrued income taxes, net	`AccruedIncomeTaxes`	-	USD	Point-in-time
Regulatory liabilities, current	`RegulatoryLiabilityCurrent`	$6.83M	USD	Point-in-time
Regulatory liabilities, current	`RegulatoryLiabilityCurrent`	$41.44M	USD	Point-in-time
Regulatory liabilities, current	`RegulatoryLiabilityCurrent`	$7.04M	USD	Point-in-time
Notes payable	`ShortTermBorrowings`	$211.30M	USD	Point-in-time
Notes payable	`ShortTermBorrowings`	$225.17M	USD	Point-in-time
Notes payable	`ShortTermBorrowings`	$112.10M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$255.74M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$5.74M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$5.74M	USD	Point-in-time
Current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$41.77M	USD	Point-in-time
Current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$2.54M	USD	Point-in-time
Current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent`	$7.70M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$649.10M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$554.27M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$730.23M	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$2.95B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$3.11B	USD	Point-in-time
Long-term debt	`LongTermDebtNoncurrent`	$3.11B	USD	Point-in-time
Deferred income tax liabilities, net	`DeferredTaxLiabilitiesNoncurrent`	$618.32M	USD	Point-in-time
Deferred income tax liabilities, net	`DeferredTaxLiabilitiesNoncurrent`	$292.75M	USD	Point-in-time
Deferred income tax liabilities, net	`DeferredTaxLiabilitiesNoncurrent`	$336.52M	USD	Point-in-time
Regulatory liabilities, non-current	`RegulatoryLiabilityNoncurrent`	$198.19M	USD	Point-in-time
Regulatory liabilities, non-current	`RegulatoryLiabilityNoncurrent`	$478.29M	USD	Point-in-time
Regulatory liabilities, non-current	`RegulatoryLiabilityNoncurrent`	$508.85M	USD	Point-in-time
Benefit plan liabilities	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$159.65M	USD	Point-in-time
Benefit plan liabilities	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$149.80M	USD	Point-in-time
Benefit plan liabilities	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$151.61M	USD	Point-in-time
Other deferred credits and other liabilities	`OtherLiabilitiesNoncurrent`	$105.73M	USD	Point-in-time
Other deferred credits and other liabilities	`OtherLiabilitiesNoncurrent`	$105.93M	USD	Point-in-time
Other deferred credits and other liabilities	`OtherLiabilitiesNoncurrent`	$114.00M	USD	Point-in-time
Non-current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	-	USD	Point-in-time
Non-current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	$23.33M	USD	Point-in-time
Non-current liabilities held for sale	`LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent`	-	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesNoncurrent`	$1.10B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesNoncurrent`	$1.06B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesNoncurrent`	$1.08B	USD	Point-in-time
Commitments and contingencies (See Notes 9, 11, 16, 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (See Notes 9, 11, 16, 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (See Notes 9, 11, 16, 17)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Common stock $1 par value; 100,000,000 shares authorized; issued 53,661,863; 53,579,986; and 53,524,529 shares, respectively	`CommonStockValue`	$53.52M	USD	Point-in-time
Common stock $1 par value; 100,000,000 shares authorized; issued 53,661,863; 53,579,986; and 53,524,529 shares, respectively	`CommonStockValue`	$53.58M	USD	Point-in-time
Common stock $1 par value; 100,000,000 shares authorized; issued 53,661,863; 53,579,986; and 53,524,529 shares, respectively	`CommonStockValue`	$53.66M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$1.16B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$1.15B	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$1.15B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$516.37M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$548.62M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$644.15M	USD	Point-in-time
Treasury stock, at cost 72,915; 39,064; and 41,457 shares, respectively	`TreasuryStockValue`	$2.31M	USD	Point-in-time
Treasury stock, at cost 72,915; 39,064; and 41,457 shares, respectively	`TreasuryStockValue`	$2.45M	USD	Point-in-time
Treasury stock, at cost 72,915; 39,064; and 41,457 shares, respectively	`TreasuryStockValue`	$4.07M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-37.70M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-34.88M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-32.57M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-41.20M	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$1.81B	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$1.68B	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$1.71B	USD	Point-in-time
Noncontrolling interest	`NoncontrollingInterestInVariableInterestEntity`	$113.18M	USD	Point-in-time
Noncontrolling interest	`NoncontrollingInterestInVariableInterestEntity`	$107.92M	USD	Point-in-time
Noncontrolling interest	`NoncontrollingInterestInVariableInterestEntity`	$111.23M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.73B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.80B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.92B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.82B	USD	Point-in-time
TOTAL LIABILITIES AND TOTAL EQUITY	`LiabilitiesAndStockholdersEquity`	$6.56B	USD	Point-in-time
TOTAL LIABILITIES AND TOTAL EQUITY	`LiabilitiesAndStockholdersEquity`	$6.66B	USD	Point-in-time
TOTAL LIABILITIES AND TOTAL EQUITY	`LiabilitiesAndStockholdersEquity`	$6.66B	USD	Point-in-time

Income Statement 128 line items

Line Item	Tag	Value	Unit	Period
Revenue	`Revenues`	$1.22B	USD	3 Qtrs
Revenue	`Revenues`	$321.98M	USD	1 Quarter
Revenue	`Revenues`	$335.61M	USD	1 Quarter
Revenue	`Revenues`	$1.25B	USD	3 Qtrs
Fuel, purchased power and cost of natural gas sold	`FuelPurchasedPowerAndCostOfGasSold`	$86.28M	USD	1 Quarter
Fuel, purchased power and cost of natural gas sold	`FuelPurchasedPowerAndCostOfGasSold`	$404.22M	USD	3 Qtrs
Fuel, purchased power and cost of natural gas sold	`FuelPurchasedPowerAndCostOfGasSold`	$80.24M	USD	1 Quarter
Fuel, purchased power and cost of natural gas sold	`FuelPurchasedPowerAndCostOfGasSold`	$432.54M	USD	3 Qtrs
Operations and maintenance	`OperatingExpenseMaintenanceOperationsandOtherCostsandExpense`	$109.26M	USD	1 Quarter
Operations and maintenance	`OperatingExpenseMaintenanceOperationsandOtherCostsandExpense`	$115.48M	USD	1 Quarter
Operations and maintenance	`OperatingExpenseMaintenanceOperationsandOtherCostsandExpense`	$335.71M	USD	3 Qtrs
Operations and maintenance	`OperatingExpenseMaintenanceOperationsandOtherCostsandExpense`	$350.10M	USD	3 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$140.64M	USD	3 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$146.34M	USD	3 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$49.05M	USD	1 Quarter
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$47.11M	USD	1 Quarter
Taxes - property, production and severance	`TaxesExcludingIncomeAndExciseTaxes`	$12.41M	USD	1 Quarter
Taxes - property, production and severance	`TaxesExcludingIncomeAndExciseTaxes`	$39.18M	USD	3 Qtrs
Taxes - property, production and severance	`TaxesExcludingIncomeAndExciseTaxes`	$38.87M	USD	3 Qtrs
Taxes - property, production and severance	`TaxesExcludingIncomeAndExciseTaxes`	$11.90M	USD	1 Quarter
Other operating expenses	`OtherCostAndExpenseOperating`	$1.99M	USD	3 Qtrs
Other operating expenses	`OtherCostAndExpenseOperating`	$6.00M	USD	3 Qtrs
Other operating expenses	`OtherCostAndExpenseOperating`	$996.00K	USD	1 Quarter
Other operating expenses	`OtherCostAndExpenseOperating`	$222.00K	USD	1 Quarter
Total operating expenses	`OperatingExpenses`	$256.05M	USD	1 Quarter
Total operating expenses	`OperatingExpenses`	$970.16M	USD	3 Qtrs
Total operating expenses	`OperatingExpenses`	$925.43M	USD	3 Qtrs
Total operating expenses	`OperatingExpenses`	$256.89M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$282.91M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$65.08M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$299.54M	USD	3 Qtrs
Operating income	`OperatingIncomeLoss`	$79.56M	USD	1 Quarter
Interest expense incurred (including amortization of debt issuance costs, premiums and discounts)	`InterestCostsIncurred`	$105.42M	USD	3 Qtrs
Interest expense incurred (including amortization of debt issuance costs, premiums and discounts)	`InterestCostsIncurred`	$35.29M	USD	1 Quarter
Interest expense incurred (including amortization of debt issuance costs, premiums and discounts)	`InterestCostsIncurred`	$36.48M	USD	1 Quarter
Interest expense incurred (including amortization of debt issuance costs, premiums and discounts)	`InterestCostsIncurred`	$107.36M	USD	3 Qtrs
Allowance for funds used during construction - borrowed	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized`	$753.00K	USD	1 Quarter
Allowance for funds used during construction - borrowed	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized`	$701.00K	USD	1 Quarter
Allowance for funds used during construction - borrowed	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized`	$2.06M	USD	3 Qtrs
Allowance for funds used during construction - borrowed	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized`	$1.34M	USD	3 Qtrs
Capitalized interest	`InterestCostsCapitalizedAdjustment`	$64.00K	USD	1 Quarter
Capitalized interest	`InterestCostsCapitalizedAdjustment`	$197.00K	USD	3 Qtrs
Capitalized interest	`InterestCostsCapitalizedAdjustment`	$100.00K	USD	1 Quarter
Capitalized interest	`InterestCostsCapitalizedAdjustment`	$177.00K	USD	3 Qtrs
Interest income	`InvestmentIncomeInterest`	$1.01M	USD	3 Qtrs
Interest income	`InvestmentIncomeInterest`	$700.00K	USD	3 Qtrs
Interest income	`InvestmentIncomeInterest`	$382.00K	USD	1 Quarter
Interest income	`InvestmentIncomeInterest`	$402.00K	USD	1 Quarter
Allowance for funds used during construction - equity	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$503.00K	USD	3 Qtrs
Allowance for funds used during construction - equity	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$1.98M	USD	3 Qtrs
Allowance for funds used during construction - equity	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$193.00K	USD	1 Quarter
Allowance for funds used during construction - equity	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$696.00K	USD	1 Quarter
Other income (expense), net	`OtherNonoperatingIncomeExpense`	$-2.43M	USD	3 Qtrs
Other income (expense), net	`OtherNonoperatingIncomeExpense`	$-703.00K	USD	1 Quarter
Other income (expense), net	`OtherNonoperatingIncomeExpense`	$189.00K	USD	1 Quarter
Other income (expense), net	`OtherNonoperatingIncomeExpense`	$-6.00K	USD	3 Qtrs
Total other income (expense), net	`NonoperatingIncomeExpense`	$-33.18M	USD	1 Quarter
Total other income (expense), net	`NonoperatingIncomeExpense`	$-35.81M	USD	1 Quarter
Total other income (expense), net	`NonoperatingIncomeExpense`	$-106.75M	USD	3 Qtrs
Total other income (expense), net	`NonoperatingIncomeExpense`	$-100.48M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$46.38M	USD	1 Quarter
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$176.16M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$199.06M	USD	3 Qtrs
Income before income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$29.28M	USD	1 Quarter
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$-11.78M	USD	3 Qtrs
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$58.52M	USD	3 Qtrs
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$13.48M	USD	1 Quarter
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$7.48M	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$187.94M	USD	3 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$32.90M	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$140.54M	USD	3 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$21.80M	USD	1 Quarter
Net (loss) from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-3.48M	USD	3 Qtrs
Net (loss) from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-857.00K	USD	1 Quarter
Net (loss) from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-1.30M	USD	1 Quarter
Net (loss) from discontinued operations	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-5.63M	USD	3 Qtrs
Net income	`ProfitLoss`	$31.60M	USD	1 Quarter
Net income	`ProfitLoss`	$20.94M	USD	1 Quarter
Net income	`ProfitLoss`	$137.06M	USD	3 Qtrs
Net income	`ProfitLoss`	$182.32M	USD	3 Qtrs
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$10.67M	USD	3 Qtrs
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$10.45M	USD	3 Qtrs
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$3.94M	USD	1 Quarter
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$3.99M	USD	1 Quarter
Net income from continuing operations	`IncomeLossFromContinuingOperations`	$129.87M	USD	3 Qtrs
Net income from continuing operations	`IncomeLossFromContinuingOperations`	$177.50M	USD	3 Qtrs
Net income from continuing operations	`IncomeLossFromContinuingOperations`	$17.81M	USD	1 Quarter
Net income from continuing operations	`IncomeLossFromContinuingOperations`	$28.96M	USD	1 Quarter
Net income available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$126.38M	USD	3 Qtrs
Net income available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$171.87M	USD	3 Qtrs
Net income available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$27.66M	USD	1 Quarter
Net income available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$16.95M	USD	1 Quarter
Income from continuing operations, Basic (usd per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.54	USD	1 Quarter
Income from continuing operations, Basic (usd per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$2.44	USD	3 Qtrs
Income from continuing operations, Basic (usd per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$0.33	USD	1 Quarter
Income from continuing operations, Basic (usd per share)	`IncomeLossFromContinuingOperationsPerBasicShare`	$3.33	USD	3 Qtrs
(Loss) from discontinued operations, Basic (usd per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-0.02	USD	1 Quarter
(Loss) from discontinued operations, Basic (usd per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-0.02	USD	1 Quarter
(Loss) from discontinued operations, Basic (usd per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-0.06	USD	3 Qtrs
(Loss) from discontinued operations, Basic (usd per share)	`DiscontinuedOperationIncomeLossFromDiscontinuedOperationNetOfTaxPerBasicShare`	$-0.10	USD	3 Qtrs
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$0.52	USD	1 Quarter
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$3.22	USD	3 Qtrs
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$2.38	USD	3 Qtrs
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$0.32	USD	1 Quarter
Income from continuing operations, Diluted (usd per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.52	USD	1 Quarter
Income from continuing operations, Diluted (usd per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$0.32	USD	1 Quarter
Income from continuing operations, Diluted (usd per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$3.26	USD	3 Qtrs
Income from continuing operations, Diluted (usd per share)	`IncomeLossFromContinuingOperationsPerDilutedShare`	$2.35	USD	3 Qtrs
(Loss) from discontinued operations, Diluted (usd per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.02	USD	1 Quarter
(Loss) from discontinued operations, Diluted (usd per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.02	USD	1 Quarter
(Loss) from discontinued operations, Diluted (usd per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.06	USD	3 Qtrs
(Loss) from discontinued operations, Diluted (usd per share)	`IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare`	$-0.10	USD	3 Qtrs
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$0.50	USD	1 Quarter
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$2.29	USD	3 Qtrs
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$0.31	USD	1 Quarter
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$3.15	USD	3 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	53.35M	shares	3 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	53.24M	shares	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	53.21M	shares	3 Qtrs
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	53.36M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	55.25M	shares	3 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	54.51M	shares	3 Qtrs
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	54.82M	shares	1 Quarter
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	55.43M	shares	1 Quarter
Dividends declared per share of common stock (usd per share)	`CommonStockDividendsPerShareDeclared`	$0.45	USD	1 Quarter
Dividends declared per share of common stock (usd per share)	`CommonStockDividendsPerShareDeclared`	$1.33	USD	3 Qtrs
Dividends declared per share of common stock (usd per share)	`CommonStockDividendsPerShareDeclared`	$0.47	USD	1 Quarter
Dividends declared per share of common stock (usd per share)	`CommonStockDividendsPerShareDeclared`	$1.43	USD	3 Qtrs

Cash Flow Statement 84 line items

Line Item	Tag	Value	Unit	Period
Net income	`ProfitLoss`	$31.60M	USD	1 Quarter
Net income	`ProfitLoss`	$20.94M	USD	1 Quarter
Net income	`ProfitLoss`	$137.06M	USD	3 Qtrs
Net income	`ProfitLoss`	$182.32M	USD	3 Qtrs
Loss from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-3.48M	USD	3 Qtrs
Loss from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-857.00K	USD	1 Quarter
Loss from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-1.30M	USD	1 Quarter
Loss from discontinued operations, net of tax	`IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity`	$-5.63M	USD	3 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$187.94M	USD	3 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$32.90M	USD	1 Quarter
Income from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$140.54M	USD	3 Qtrs
Income from continuing operations	`IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest`	$21.80M	USD	1 Quarter
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$140.64M	USD	3 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$146.34M	USD	3 Qtrs
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$49.05M	USD	1 Quarter
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$47.11M	USD	1 Quarter
Deferred financing cost amortization	`AmortizationOfFinancingCostsAndDiscounts`	$6.21M	USD	3 Qtrs
Deferred financing cost amortization	`AmortizationOfFinancingCostsAndDiscounts`	$5.68M	USD	3 Qtrs
Stock compensation	`ShareBasedCompensation`	$7.59M	USD	3 Qtrs
Stock compensation	`ShareBasedCompensation`	$7.54M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-14.40M	USD	3 Qtrs
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$65.54M	USD	3 Qtrs
Employee benefit plans	`PensionAndOtherPostretirementBenefitExpense`	$8.47M	USD	3 Qtrs
Employee benefit plans	`PensionAndOtherPostretirementBenefitExpense`	$10.64M	USD	3 Qtrs
Other adjustments, net	`OtherNoncashIncomeExpense`	$3.55M	USD	3 Qtrs
Other adjustments, net	`OtherNoncashIncomeExpense`	$-7.67M	USD	3 Qtrs
Materials, supplies and fuel	`IncreaseDecreaseInInventories`	$19.51M	USD	3 Qtrs
Materials, supplies and fuel	`IncreaseDecreaseInInventories`	$8.38M	USD	3 Qtrs
Accounts receivable, unbilled revenues and other operating assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$-103.96M	USD	3 Qtrs
Accounts receivable, unbilled revenues and other operating assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$-72.06M	USD	3 Qtrs
Accounts payable and other operating liabilities	`IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities`	$-86.60M	USD	3 Qtrs
Accounts payable and other operating liabilities	`IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities`	$-112.29M	USD	3 Qtrs
Regulatory assets - current	`IncreaseDecreaseInOtherRegulatoryAssets`	$-41.66M	USD	3 Qtrs
Regulatory assets - current	`IncreaseDecreaseInOtherRegulatoryAssets`	$-1.29M	USD	3 Qtrs
Regulatory liabilities - current	`IncreaseDecreaseInRegulatoryLiabilities`	$-4.33M	USD	3 Qtrs
Regulatory liabilities - current	`IncreaseDecreaseInRegulatoryLiabilities`	$21.42M	USD	3 Qtrs
Contributions to defined benefit pension plans	`PensionContributions`	$27.70M	USD	3 Qtrs
Contributions to defined benefit pension plans	`PensionContributions`	$12.70M	USD	3 Qtrs
Other operating activities, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$1.41M	USD	3 Qtrs
Other operating activities, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-2.01M	USD	3 Qtrs
Net cash provided by operating activities of continuing operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$305.45M	USD	3 Qtrs
Net cash provided by operating activities of continuing operations	`NetCashProvidedByUsedInOperatingActivitiesContinuingOperations`	$380.88M	USD	3 Qtrs
Net cash provided by (used in) operating activities of discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$-2.16M	USD	3 Qtrs
Net cash provided by (used in) operating activities of discontinued operations	`CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations`	$13.98M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$378.72M	USD	3 Qtrs
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$319.43M	USD	3 Qtrs
Property, plant and equipment additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$238.84M	USD	3 Qtrs
Property, plant and equipment additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$278.13M	USD	3 Qtrs
Purchase of investment	`PaymentsToAcquireOtherInvestments`	-	USD	3 Qtrs
Purchase of investment	`PaymentsToAcquireOtherInvestments`	$24.43M	USD	3 Qtrs
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-160.00K	USD	3 Qtrs
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-2.77M	USD	3 Qtrs
Net cash provided by (used in) investing activities of continuing operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-238.68M	USD	3 Qtrs
Net cash provided by (used in) investing activities of continuing operations	`NetCashProvidedByUsedInInvestingActivitiesContinuingOperations`	$-299.80M	USD	3 Qtrs
Net cash provided by (used in) investing activities of discontinued operations	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$18.02M	USD	3 Qtrs
Net cash provided by (used in) investing activities of discontinued operations	`CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations`	$-17.30M	USD	3 Qtrs
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-281.77M	USD	3 Qtrs
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-255.98M	USD	3 Qtrs
Dividends paid on common stock	`PaymentsOfDividends`	$71.33M	USD	3 Qtrs
Dividends paid on common stock	`PaymentsOfDividends`	$76.31M	USD	3 Qtrs
Common stock issued	`ProceedsFromIssuanceOfCommonStock`	$3.56M	USD	3 Qtrs
Common stock issued	`ProceedsFromIssuanceOfCommonStock`	$1.08M	USD	3 Qtrs
Net (payments) borrowings of short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$128.57M	USD	3 Qtrs
Net (payments) borrowings of short-term debt	`ProceedsFromRepaymentsOfShortTermDebt`	$-99.20M	USD	3 Qtrs
Proceeds from Issuance of Long-term Debt	`ProceedsFromIssuanceOfLongTermDebt`	$700.00M	USD	3 Qtrs
Proceeds from Issuance of Long-term Debt	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	3 Qtrs
Long-term debt - repayments	`RepaymentsOfLongTermDebt`	$603.31M	USD	3 Qtrs
Long-term debt - repayments	`RepaymentsOfLongTermDebt`	$104.31M	USD	3 Qtrs
Distributions to noncontrolling interest	`PaymentsToMinorityShareholders`	$12.88M	USD	3 Qtrs
Distributions to noncontrolling interest	`PaymentsToMinorityShareholders`	$13.76M	USD	3 Qtrs
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-10.46M	USD	3 Qtrs
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-6.72M	USD	3 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-63.11M	USD	3 Qtrs
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$-101.95M	USD	3 Qtrs
Net change in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$-5.00M	USD	3 Qtrs
Net change in cash, cash equivalents and restricted cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$340.00K	USD	3 Qtrs
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$15.79M	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$18.24M	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$13.24M	USD	Point-in-time
Cash, cash equivalents and restricted cash at beginning of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$16.13M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$15.79M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$18.24M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$13.24M	USD	Point-in-time
Cash, cash equivalents and restricted cash at end of period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$16.13M	USD	Point-in-time

Comprehensive Income 36 line items

Line Item	Tag	Value	Unit	Period
Reclassification adjustment of benefit plan - prior service cost, (tax) benefit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	$-10.00K	USD	1 Quarter
Net income	`ProfitLoss`	$31.60M	USD	1 Quarter
Net income	`ProfitLoss`	$20.94M	USD	1 Quarter
Reclassification adjustment of benefit plan - prior service cost, (tax) benefit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	$-17.00K	USD	1 Quarter
Reclassification adjustment of benefit plan - prior service cost, (tax) benefit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	$-52.00K	USD	3 Qtrs
Net income	`ProfitLoss`	$137.06M	USD	3 Qtrs
Reclassification adjustment of benefit plan - prior service cost, (tax) benefit	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	$-29.00K	USD	3 Qtrs
Net income	`ProfitLoss`	$182.32M	USD	3 Qtrs
Reclassification adjustment of benefit plan liabilities, (tax) benefit	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$138.00K	USD	1 Quarter
Reclassification adjustment of benefit plan liabilities, (tax) benefit	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$145.00K	USD	1 Quarter
Reclassification adjustment of benefit plan liabilities, (tax) benefit	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$445.00K	USD	3 Qtrs
Reclassification adjustment of benefit plan liabilities, (tax) benefit	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$409.00K	USD	3 Qtrs
Reclassification adjustments of benefit plan liability - prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-104.00K	USD	3 Qtrs
Reclassification adjustments of benefit plan liability - prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-94.00K	USD	3 Qtrs
Reclassification adjustments of benefit plan liability - prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-34.00K	USD	1 Quarter
Reclassification adjustments of benefit plan liability - prior service cost	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-32.00K	USD	1 Quarter
Reclassification adjustments of benefit plan liability - net gain (loss)	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-1.46M	USD	3 Qtrs
Reclassification adjustments of benefit plan liability - net gain (loss)	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-269.00K	USD	1 Quarter
Reclassification adjustments of benefit plan liability - net gain (loss)	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-483.00K	USD	1 Quarter
Reclassification adjustments of benefit plan liability - net gain (loss)	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-797.00K	USD	3 Qtrs
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$3.48M	USD	3 Qtrs
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$1.06M	USD	1 Quarter
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$2.32M	USD	3 Qtrs
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$375.00K	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$22.00M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$139.37M	USD	3 Qtrs
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$31.97M	USD	1 Quarter
Comprehensive income	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$185.80M	USD	3 Qtrs
Less: comprehensive income attributable to noncontrolling interest	`NetIncomeLossAttributableToRedeemableNoncontrollingInterest`	$3.94M	USD	1 Quarter
Less: comprehensive income attributable to noncontrolling interest	`NetIncomeLossAttributableToRedeemableNoncontrollingInterest`	$10.67M	USD	3 Qtrs
Less: comprehensive income attributable to noncontrolling interest	`NetIncomeLossAttributableToRedeemableNoncontrollingInterest`	$10.45M	USD	3 Qtrs
Less: comprehensive income attributable to noncontrolling interest	`NetIncomeLossAttributableToRedeemableNoncontrollingInterest`	$3.99M	USD	1 Quarter
Comprehensive income available for common stock	`ComprehensiveIncomeNetOfTax`	$128.70M	USD	3 Qtrs
Comprehensive income available for common stock	`ComprehensiveIncomeNetOfTax`	$175.35M	USD	3 Qtrs
Comprehensive income available for common stock	`ComprehensiveIncomeNetOfTax`	$18.01M	USD	1 Quarter
Comprehensive income available for common stock	`ComprehensiveIncomeNetOfTax`	$28.04M	USD	1 Quarter

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