10-K Filing

BLACK HILLS CORP /SD/ CIK: 1130464 FY 2016

Filing Information

Form Type	10-K
Accession Number	`0001130464-17-000010`
Period End Date	20161231
Filing Date	20170227
Fiscal Year	2016
Fiscal Period	FY
XBRL Instance	bkh-20161231.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 106 Income Statement 124 Cash Flow Statement 113 Stockholders Equity 64 Comprehensive Income 39

Balance Sheet 106 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
Treasury Stock, Shares	`TreasuryStockShares`	15,258.00	shares	Point-in-time
Treasury Stock, Shares	`TreasuryStockShares`	39,720.00	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$13.58M	USD	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	100.00M	shares	Point-in-time
Cash and cash equivalents	`CashAndCashEquivalentsAtCarryingValue`	$440.86M	USD	Point-in-time
Common Stock, Shares, Issued	`CommonStockSharesIssued`	51.23M	shares	Point-in-time
Restricted cash and equivalents	`RestrictedCashAndInvestmentsCurrent`	$2.27M	USD	Point-in-time
Restricted cash and equivalents	`RestrictedCashAndInvestmentsCurrent`	$1.70M	USD	Point-in-time
Common Stock, Shares, Issued	`CommonStockSharesIssued`	53.40M	shares	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$147.49M	USD	Point-in-time
Accounts receivable, net	`AccountsReceivableNetCurrent`	$263.29M	USD	Point-in-time
Materials, supplies and fuel	`InventoryNet`	$107.21M	USD	Point-in-time
Materials, supplies and fuel	`InventoryNet`	$86.94M	USD	Point-in-time
Derivative assets, current	`DerivativeAssetsCurrent`	$4.14M	USD	Point-in-time
Derivative assets, current	`DerivativeAssetsCurrent`	-	USD	Point-in-time
Income tax receivable, net	`IncomeTaxesReceivable`	-	USD	Point-in-time
Income tax receivable, net	`IncomeTaxesReceivable`	$368.00K	USD	Point-in-time
Regulatory assets, current	`RegulatoryAssetsCurrent`	$49.26M	USD	Point-in-time
Regulatory assets, current	`RegulatoryAssetsCurrent`	$57.36M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$27.06M	USD	Point-in-time
Other current assets	`OtherAssetsCurrent`	$71.76M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$466.81M	USD	Point-in-time
Total current assets	`AssetsCurrent`	$806.48M	USD	Point-in-time
Investments	`LongTermInvestments`	$12.56M	USD	Point-in-time
Investments	`LongTermInvestments`	$11.98M	USD	Point-in-time
Property, plant and equipment	`PropertyPlantAndEquipmentGross`	$6.41B	USD	Point-in-time
Property, plant and equipment	`PropertyPlantAndEquipmentGross`	$4.98B	USD	Point-in-time
Less accumulated depreciation and depletion	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$1.94B	USD	Point-in-time
Less accumulated depreciation and depletion	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$1.72B	USD	Point-in-time
Total property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$4.47B	USD	Point-in-time
Total property, plant and equipment, net	`PropertyPlantAndEquipmentNet`	$3.26B	USD	Point-in-time
Goodwill	`Goodwill`	$1.30B	USD	Point-in-time
Goodwill	`Goodwill`	$353.40M	USD	Point-in-time
Goodwill	`Goodwill`	$359.76M	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$8.39M	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$3.38M	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$3.40M	USD	Point-in-time
Intangible assets, net	`IntangibleAssetsNetExcludingGoodwill`	$3.18M	USD	Point-in-time
Derivative assets, non-current	`DerivativeAssetsNoncurrent`	$222.00K	USD	Point-in-time
Derivative assets, non-current	`DerivativeAssetsNoncurrent`	$3.44M	USD	Point-in-time
Regulatory assets, non-current	`RegulatoryAssetsNoncurrent`	$246.88M	USD	Point-in-time
Regulatory assets, non-current	`RegulatoryAssetsNoncurrent`	$175.12M	USD	Point-in-time
Other assets, non-current	`OtherAssetsNoncurrent`	$12.13M	USD	Point-in-time
Other assets, non-current	`OtherAssetsNoncurrent`	$7.38M	USD	Point-in-time
Total other assets, non-current	`AssetsNoncurrent`	$549.09M	USD	Point-in-time
Total other assets, non-current	`AssetsNoncurrent`	$1.57B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$4.63B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$6.52B	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$89.79M	USD	Point-in-time
Accounts payable	`AccountsPayableCurrent`	$153.48M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$232.06M	USD	Point-in-time
Accrued liabilities	`AccruedLiabilitiesCurrent`	$244.03M	USD	Point-in-time
Derivative liabilities, current	`DerivativeLiabilitiesCurrent`	$2.46M	USD	Point-in-time
Derivative liabilities, current	`DerivativeLiabilitiesCurrent`	$2.83M	USD	Point-in-time
Accrued income tax, net	`AccruedIncomeTaxesCurrent`	$12.55M	USD	Point-in-time
Accrued income tax, net	`AccruedIncomeTaxesCurrent`	-	USD	Point-in-time
Regulatory liabilities, current	`RegulatoryLiabilityCurrent`	$4.87M	USD	Point-in-time
Regulatory liabilities, current	`RegulatoryLiabilityCurrent`	$13.07M	USD	Point-in-time
Notes payable	`ShortTermBorrowings`	$76.80M	USD	Point-in-time
Notes payable	`ShortTermBorrowings`	$96.60M	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	-	USD	Point-in-time
Current maturities of long-term debt	`LongTermDebtCurrent`	$5.74M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$406.36M	USD	Point-in-time
Total current liabilities	`LiabilitiesCurrent`	$527.93M	USD	Point-in-time
Long-term debt, net of current maturities	`LongTermDebtNoncurrent`	$3.21B	USD	Point-in-time
Long-term debt, net of current maturities	`LongTermDebtNoncurrent`	$1.85B	USD	Point-in-time
Deferred income tax liabilities, net, non-current	`DeferredTaxLiabilitiesNoncurrent`	$450.58M	USD	Point-in-time
Deferred income tax liabilities, net, non-current	`DeferredTaxLiabilitiesNoncurrent`	$535.61M	USD	Point-in-time
Derivative liabilities, non-current	`DerivativeLiabilitiesNoncurrent`	$156.00K	USD	Point-in-time
Derivative liabilities, non-current	`DerivativeLiabilitiesNoncurrent`	$274.00K	USD	Point-in-time
Regulatory liabilities, non-current	`RegulatoryLiabilityNoncurrent`	$193.69M	USD	Point-in-time
Regulatory liabilities, non-current	`RegulatoryLiabilityNoncurrent`	$148.18M	USD	Point-in-time
Benefit plan liabilities	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$173.68M	USD	Point-in-time
Benefit plan liabilities	`PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent`	$146.46M	USD	Point-in-time
Other deferred credits and other liabilities	`OtherLiabilitiesNoncurrent`	$155.37M	USD	Point-in-time
Other deferred credits and other liabilities	`OtherLiabilitiesNoncurrent`	$138.64M	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesNoncurrent`	$1.04B	USD	Point-in-time
Total deferred credits and other liabilities	`LiabilitiesNoncurrent`	$900.74M	USD	Point-in-time
Commitments and contingencies (See Notes 6, 7, 8, 9, 14, 18, 19, and 20)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and contingencies (See Notes 6, 7, 8, 9, 14, 18, 19, and 20)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityOtherCarryingAmount`	$4.29M	USD	Point-in-time
Redeemable noncontrolling interest	`RedeemableNoncontrollingInterestEquityOtherCarryingAmount`	-	USD	Point-in-time
Common stock $1 par value; 100,000,000 shares authorized; issued: 53,397,467 and 51,231,861 shares, respectively	`CommonStockValue`	$53.40M	USD	Point-in-time
Common stock $1 par value; 100,000,000 shares authorized; issued: 53,397,467 and 51,231,861 shares, respectively	`CommonStockValue`	$51.23M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$953.04M	USD	Point-in-time
Additional paid-in capital	`AdditionalPaidInCapital`	$1.14B	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$472.53M	USD	Point-in-time
Retained earnings	`RetainedEarningsAccumulatedDeficit`	$457.93M	USD	Point-in-time
Treasury stock at cost - 15,258 and 39,720 shares, respectively	`TreasuryStockValue`	$1.89M	USD	Point-in-time
Treasury stock at cost - 15,258 and 39,720 shares, respectively	`TreasuryStockValue`	$791.00K	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-9.05M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-15.04M	USD	Point-in-time
Accumulated other comprehensive income (loss)	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-34.88M	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$1.61B	USD	Point-in-time
Total stockholders equity	`StockholdersEquity`	$1.47B	USD	Point-in-time
Noncontrolling interest	`NoncontrollingInterestInVariableInterestEntity`	-	USD	Point-in-time
Noncontrolling interest	`NoncontrollingInterestInVariableInterestEntity`	$115.50M	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.73B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.47B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.35B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.28B	USD	Point-in-time
TOTAL LIABILITIES, REDEEMABLE NONCONTROLLING INTEREST AND TOTAL EQUITY	`LiabilitiesAndStockholdersEquity`	$6.52B	USD	Point-in-time
TOTAL LIABILITIES, REDEEMABLE NONCONTROLLING INTEREST AND TOTAL EQUITY	`LiabilitiesAndStockholdersEquity`	$4.63B	USD	Point-in-time

Income Statement 124 line items

Line Item	Tag	Value	Unit	Period
Revenue	`SalesRevenueNet`	$449.96M	USD	1 Quarter
Revenue	`SalesRevenueNet`	$333.79M	USD	1 Quarter
Revenue	`SalesRevenueNet`	$1.39B	USD	Annual
Revenue	`SalesRevenueNet`	$325.44M	USD	1 Quarter
Revenue	`SalesRevenueNet`	$272.25M	USD	1 Quarter
Revenue	`SalesRevenueNet`	$1.30B	USD	Annual
Revenue	`SalesRevenueNet`	$272.11M	USD	1 Quarter
Revenue	`SalesRevenueNet`	$463.79M	USD	1 Quarter
Revenue	`SalesRevenueNet`	$1.57B	USD	Annual
Revenue	`SalesRevenueNet`	$441.99M	USD	1 Quarter
Revenue	`SalesRevenueNet`	$318.26M	USD	1 Quarter
Fuel, purchased power and cost of natural gas sold	`FuelPurchasedPowerAndCostOfGasSold`	$499.13M	USD	Annual
Fuel, purchased power and cost of natural gas sold	`FuelPurchasedPowerAndCostOfGasSold`	$581.78M	USD	Annual
Fuel, purchased power and cost of natural gas sold	`FuelPurchasedPowerAndCostOfGasSold`	$456.89M	USD	Annual
Operations and maintenance	`OperatingExpenseMaintenanceOperationsandOtherCostsandExpense`	$359.10M	USD	Annual
Operations and maintenance	`OperatingExpenseMaintenanceOperationsandOtherCostsandExpense`	$361.11M	USD	Annual
Operations and maintenance	`OperatingExpenseMaintenanceOperationsandOtherCostsandExpense`	$456.40M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$155.37M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$189.04M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$144.75M	USD	Annual
Impairment of long-lived assets	`ImpairmentOfLongLivedAssetsHeldForUse`	$106.96M	USD	Annual
Impairment of long-lived assets	`ImpairmentOfLongLivedAssetsHeldForUse`	$249.61M	USD	Annual
Impairment of long-lived assets	`ImpairmentOfLongLivedAssetsHeldForUse`	-	USD	Annual
Taxes - property, production and severance	`TaxesExcludingIncomeAndExciseTaxes`	$43.58M	USD	Annual
Taxes - property, production and severance	`TaxesExcludingIncomeAndExciseTaxes`	$44.35M	USD	Annual
Taxes - property, production and severance	`TaxesExcludingIncomeAndExciseTaxes`	$48.52M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$500.00K	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$50.34M	USD	Annual
Other operating expenses	`OtherCostAndExpenseOperating`	$7.48M	USD	Annual
Total operating expenses	`OperatingExpenses`	$1.27B	USD	Annual
Total operating expenses	`OperatingExpenses`	$1.35B	USD	Annual
Total operating expenses	`OperatingExpenses`	$1.13B	USD	Annual
Operating income	`OperatingIncomeLoss`	$-38.86M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$73.59M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$55.29M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$35.30M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$29.80M	USD	Annual
Operating income	`OperatingIncomeLoss`	$222.59M	USD	Annual
Operating income	`OperatingIncomeLoss`	$-2.04M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$197.00K	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$58.41M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$70.50M	USD	1 Quarter
Operating income	`OperatingIncomeLoss`	$263.87M	USD	Annual
Interest expense incurred (including amortization of debt issuance costs, premiums and discounts)	`InterestCostsIncurred`	$139.59M	USD	Annual
Interest expense incurred (including amortization of debt issuance costs, premiums and discounts)	`InterestCostsIncurred`	$86.28M	USD	Annual
Interest expense incurred (including amortization of debt issuance costs, premiums and discounts)	`InterestCostsIncurred`	$73.02M	USD	Annual
Allowance for funds used during construction - borrowed	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized`	$1.25M	USD	Annual
Allowance for funds used during construction - borrowed	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized`	$2.98M	USD	Annual
Allowance for funds used during construction - borrowed	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionBorrowedInterestCostsCapitalized`	$1.07M	USD	Annual
Capitalized interest	`CapitalizedInterest`	$1.31M	USD	Annual
Capitalized interest	`CapitalizedInterest`	$982.00K	USD	Annual
Capitalized interest	`CapitalizedInterest`	$1.20M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$1.93M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$1.62M	USD	Annual
Interest income	`InvestmentIncomeInterest`	$1.43M	USD	Annual
Allowance for funds used during construction - equity	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$994.00K	USD	Annual
Allowance for funds used during construction - equity	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$897.00K	USD	Annual
Allowance for funds used during construction - equity	`PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity`	$3.27M	USD	Annual
Other expense	`OtherNonoperatingExpense`	$609.00K	USD	Annual
Other expense	`OtherNonoperatingExpense`	$377.00K	USD	Annual
Other expense	`OtherNonoperatingExpense`	$372.00K	USD	Annual
Other income	`OtherNonoperatingIncome`	$2.26M	USD	Annual
Other income	`OtherNonoperatingIncome`	$2.06M	USD	Annual
Other income	`OtherNonoperatingIncome`	$1.84M	USD	Annual
Total other income (expense)	`TotalOtherIncomeExpense`	$-129.48M	USD	Annual
Total other income (expense)	`TotalOtherIncomeExpense`	$-79.32M	USD	Annual
Total other income (expense)	`TotalOtherIncomeExpense`	$-66.35M	USD	Annual
Income (loss) before earnings (loss) of unconsolidated subsidiaries and income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$-49.52M	USD	Annual
Income (loss) before earnings (loss) of unconsolidated subsidiaries and income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$93.11M	USD	Annual
Income (loss) before earnings (loss) of unconsolidated subsidiaries and income taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments`	$197.51M	USD	Annual
Equity in earnings (loss) of unconsolidated subsidiaries	`IncomeLossFromEquityMethodInvestments`	-	USD	Annual
Equity in earnings (loss) of unconsolidated subsidiaries	`IncomeLossFromEquityMethodInvestments`	$-344.00K	USD	Annual
Equity in earnings (loss) of unconsolidated subsidiaries	`IncomeLossFromEquityMethodInvestments`	$-1.00K	USD	Annual
Impairment of equity investments	`EquityMethodInvestmentOtherThanTemporaryImpairment`	$4.41M	USD	Annual
Impairment of equity investments	`EquityMethodInvestmentOtherThanTemporaryImpairment`	-	USD	Annual
Impairment of equity investments	`EquityMethodInvestmentOtherThanTemporaryImpairment`	-	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$66.62M	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$-22.16M	USD	Annual
Income tax benefit (expense)	`IncomeTaxExpenseBenefit`	$10.47M	USD	Annual
Net income (loss)	`ProfitLoss`	$82.63M	USD	Annual
Net income (loss)	`ProfitLoss`	$-32.11M	USD	Annual
Net income (loss)	`ProfitLoss`	$130.89M	USD	Annual
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$9.66M	USD	Annual
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$18.17M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-41.84M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$72.97M	USD	Annual
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$40.00M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$33.85M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$14.13M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-14.18M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$130.89M	USD	Annual
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$669.00K	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-9.94M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-32.11M	USD	Annual
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$0.27	USD	1 Quarter
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$2.95	USD	Annual
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$-0.30	USD	1 Quarter
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$-0.94	USD	1 Quarter
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$0.78	USD	1 Quarter
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$0.01	USD	1 Quarter
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$-0.22	USD	1 Quarter
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$1.41	USD	Annual
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$0.76	USD	1 Quarter
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$-0.71	USD	Annual
Earnings (loss) per share, Basic (usd per share)	`EarningsPerShareBasic`	$0.34	USD	1 Quarter
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$0.26	USD	1 Quarter
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$0.33	USD	1 Quarter
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$0.76	USD	1 Quarter
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$-0.22	USD	1 Quarter
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$-0.30	USD	1 Quarter
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$-0.94	USD	1 Quarter
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$-0.71	USD	Annual
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$2.93	USD	Annual
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$0.77	USD	1 Quarter
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$1.37	USD	Annual
Earnings (loss) per share, Diluted (usd per share)	`EarningsPerShareDiluted`	$0.01	USD	1 Quarter
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	45.29M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	51.92M	shares	Annual
Basic (in shares)	`WeightedAverageNumberOfSharesOutstandingBasic`	44.39M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	44.60M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	53.27M	shares	Annual
Diluted (in shares)	`WeightedAverageNumberOfDilutedSharesOutstanding`	45.29M	shares	Annual

Cash Flow Statement 113 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$82.63M	USD	Annual
Net income (loss)	`ProfitLoss`	$-32.11M	USD	Annual
Net income (loss)	`ProfitLoss`	$130.89M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$155.37M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$189.04M	USD	Annual
Depreciation, depletion and amortization	`DepreciationDepletionAndAmortization`	$144.75M	USD	Annual
Deferred financing cost amortization	`AmortizationOfFinancingCostsAndDiscounts`	$6.36M	USD	Annual
Deferred financing cost amortization	`AmortizationOfFinancingCostsAndDiscounts`	$2.13M	USD	Annual
Deferred financing cost amortization	`AmortizationOfFinancingCostsAndDiscounts`	$6.18M	USD	Annual
Impairment of long-lived assets and equity method investments	`ImpairmentOfOilAndGasProperties`	$254.01M	USD	Annual
Impairment of long-lived assets and equity method investments	`ImpairmentOfOilAndGasProperties`	$106.96M	USD	Annual
Impairment of long-lived assets and equity method investments	`ImpairmentOfOilAndGasProperties`	-	USD	Annual
Stock compensation	`ShareBasedCompensation`	$10.88M	USD	Annual
Stock compensation	`ShareBasedCompensation`	$9.33M	USD	Annual
Stock compensation	`ShareBasedCompensation`	$4.08M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$70.23M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$-26.03M	USD	Annual
Deferred income taxes	`DeferredIncomeTaxExpenseBenefit`	$36.22M	USD	Annual
Employee benefit plans	`PensionAndOtherPostretirementBenefitExpense`	$14.29M	USD	Annual
Employee benefit plans	`PensionAndOtherPostretirementBenefitExpense`	$14.81M	USD	Annual
Employee benefit plans	`PensionAndOtherPostretirementBenefitExpense`	$20.62M	USD	Annual
Other adjustments, net	`OtherNoncashIncomeExpense`	$-14.41M	USD	Annual
Other adjustments, net	`OtherNoncashIncomeExpense`	$4.87M	USD	Annual
Other adjustments, net	`OtherNoncashIncomeExpense`	$5.52M	USD	Annual
Materials, supplies and fuel	`IncreaseDecreaseInInventories`	$4.56M	USD	Annual
Materials, supplies and fuel	`IncreaseDecreaseInInventories`	$-1.10M	USD	Annual
Materials, supplies and fuel	`IncreaseDecreaseInInventories`	$-7.20M	USD	Annual
Accounts receivable, unbilled revenues and other current assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$18.68M	USD	Annual
Accounts receivable, unbilled revenues and other current assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$28.41M	USD	Annual
Accounts receivable, unbilled revenues and other current assets	`IncreaseDecreaseInAccountsReceivableAndOtherOperatingAssets`	$-40.12M	USD	Annual
Accounts payable and other current liabilities	`IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities`	$-40.20M	USD	Annual
Accounts payable and other current liabilities	`IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities`	$7.89M	USD	Annual
Accounts payable and other current liabilities	`IncreaseDecreaseInOtherAccountsPayableAndAccruedLiabilities`	$-4.78M	USD	Annual
Regulatory assets	`IncreaseDecreaseInOtherRegulatoryAssets`	$38.77M	USD	Annual
Regulatory assets	`IncreaseDecreaseInOtherRegulatoryAssets`	$-3.61M	USD	Annual
Regulatory assets	`IncreaseDecreaseInOtherRegulatoryAssets`	$-21.88M	USD	Annual
Regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$-7.63M	USD	Annual
Regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$-14.08M	USD	Annual
Regulatory liabilities	`IncreaseDecreaseInRegulatoryLiabilities`	$1.68M	USD	Annual
Contributions to defined benefit pension plans	`PensionContributions`	$14.20M	USD	Annual
Contributions to defined benefit pension plans	`PensionContributions`	$10.20M	USD	Annual
Contributions to defined benefit pension plans	`PensionContributions`	$10.20M	USD	Annual
Interest rate swap settlement	`GainLossOnSaleOfDerivatives`	$28.82M	USD	Annual
Interest rate swap settlement	`GainLossOnSaleOfDerivatives`	-	USD	Annual
Interest rate swap settlement	`GainLossOnSaleOfDerivatives`	-	USD	Annual
Other operating activities, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-733.00K	USD	Annual
Other operating activities, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$-775.00K	USD	Annual
Other operating activities, net	`IncreaseDecreaseInOtherOperatingCapitalNet`	$9.03M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$424.30M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$320.46M	USD	Annual
Net cash provided by operating activities	`NetCashProvidedByUsedInOperatingActivities`	$315.32M	USD	Annual
Property, plant and equipment additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$455.48M	USD	Annual
Property, plant and equipment additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$474.78M	USD	Annual
Property, plant and equipment additions	`PaymentsToAcquirePropertyPlantAndEquipment`	$398.49M	USD	Annual
Acquisition of net assets, net of long-term debt assumed	`BusinessCombinationConsiderationTransferredNetofLongTermDebtandCashAcquired`	$1.12B	USD	Annual
Acquisition of net assets, net of long-term debt assumed	`BusinessCombinationConsiderationTransferredNetofLongTermDebtandCashAcquired`	$21.97M	USD	Annual
Acquisition of net assets, net of long-term debt assumed	`BusinessCombinationConsiderationTransferredNetofLongTermDebtandCashAcquired`	-	USD	Annual
Acquisition of net assets, net of long-term debt assumed	`BusinessCombinationConsiderationTransferredNetofLongTermDebtandCashAcquired`	$-1.12B	USD	Point-in-time
Proceeds from sale of assets	`ProceedsFromSaleOfOtherAssetsInvestingActivities`	-	USD	Annual
Proceeds from sale of assets	`ProceedsFromSaleOfOtherAssetsInvestingActivities`	-	USD	Annual
Proceeds from sale of assets	`ProceedsFromSaleOfOtherAssetsInvestingActivities`	$11.42M	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$1.14M	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$-1.06M	USD	Annual
Other investing activities	`PaymentsForProceedsFromOtherInvestingActivities`	$2.65M	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-476.39M	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-401.15M	USD	Annual
Net cash provided by (used in) investing activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.59B	USD	Annual
Dividends paid on common stock	`PaymentsOfDividends`	$87.57M	USD	Annual
Dividends paid on common stock	`PaymentsOfDividends`	$69.64M	USD	Annual
Dividends paid on common stock	`PaymentsOfDividends`	$72.60M	USD	Annual
Common stock issued	`ProceedsFromIssuanceOfCommonStock`	$248.76M	USD	Annual
Common stock issued	`ProceedsFromIssuanceOfCommonStock`	$3.25M	USD	Annual
Common stock issued	`ProceedsFromIssuanceOfCommonStock`	$121.62M	USD	Annual
Short-term borrowings - issuances	`ProceedsFromLinesOfCredit`	$396.25M	USD	Annual
Short-term borrowings - issuances	`ProceedsFromLinesOfCredit`	$397.31M	USD	Annual
Short-term borrowings - issuances	`ProceedsFromLinesOfCredit`	$425.40M	USD	Annual
Short-term borrowings - repayments	`RepaymentsOfLinesOfCredit`	$395.51M	USD	Annual
Short-term borrowings - repayments	`RepaymentsOfLinesOfCredit`	$403.75M	USD	Annual
Short-term borrowings - repayments	`RepaymentsOfLinesOfCredit`	$405.60M	USD	Annual
Long-term debt - issuance	`ProceedsFromIssuanceOfLongTermDebt`	$1.77B	USD	Annual
Long-term debt - issuance	`ProceedsFromIssuanceOfLongTermDebt`	$160.00M	USD	Annual
Long-term debt - issuance	`ProceedsFromIssuanceOfLongTermDebt`	$546.00M	USD	Point-in-time
Long-term debt - issuance	`ProceedsFromIssuanceOfLongTermDebt`	$300.00M	USD	Annual
Long-term debt - repayments	`RepaymentsOfLongTermDebt`	$1.16B	USD	Annual
Long-term debt - repayments	`RepaymentsOfLongTermDebt`	$275.00M	USD	Annual
Long-term debt - repayments	`RepaymentsOfLongTermDebt`	$12.20M	USD	Annual
Sale of noncontrolling interest	`ProceedsFromMinorityShareholders`	-	USD	Annual
Sale of noncontrolling interest	`ProceedsFromMinorityShareholders`	-	USD	Annual
Sale of noncontrolling interest	`ProceedsFromMinorityShareholders`	$216.37M	USD	Annual
Distributions to noncontrolling interests	`PaymentsToMinorityShareholders`	-	USD	Annual
Distributions to noncontrolling interests	`PaymentsToMinorityShareholders`	$9.56M	USD	Annual
Distributions to noncontrolling interests	`PaymentsToMinorityShareholders`	-	USD	Annual
Equity units - issuance	`ProceedsFromSaleOfInterestInCorporateUnit`	$290.03M	USD	Annual
Equity units - issuance	`ProceedsFromSaleOfInterestInCorporateUnit`	-	USD	Annual
Equity units - issuance	`ProceedsFromSaleOfInterestInCorporateUnit`	-	USD	Annual
Equity units - issuance	`ProceedsFromSaleOfInterestInCorporateUnit`	$290.03M	USD	Point-in-time
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-9.28M	USD	Annual
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$17.15M	USD	Annual
Other financing activities	`ProceedsFromPaymentsForOtherFinancingActivities`	$-22.96M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$483.70M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$91.07M	USD	Annual
Net cash provided by (used in) financing activities	`NetCashProvidedByUsedInFinancingActivities`	$841.00M	USD	Annual
Net change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$5.24M	USD	Annual
Net change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$431.61M	USD	Annual
Net change in cash and cash equivalents	`CashAndCashEquivalentsPeriodIncreaseDecrease`	$-427.28M	USD	Annual
Cash and cash equivalents beginning of year	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$4.02M	USD	Point-in-time
Cash and cash equivalents beginning of year	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$9.25M	USD	Point-in-time
Cash and cash equivalents beginning of year	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$440.86M	USD	Point-in-time
Cash and cash equivalents beginning of year	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$13.58M	USD	Point-in-time
Cash and cash equivalents end of year	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$4.02M	USD	Point-in-time
Cash and cash equivalents end of year	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$9.25M	USD	Point-in-time
Cash and cash equivalents end of year	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$440.86M	USD	Point-in-time
Cash and cash equivalents end of year	`CashAndCashEquivalentsAtCarryingValueIncludingDiscontinuedOperations`	$13.58M	USD	Point-in-time

Stockholders Equity 64 line items

Line Item	Tag	Value	Unit	Period
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.73B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.47B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.35B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.28B	USD	Point-in-time
Treasury Stock, Shares	`TreasuryStockShares`	15,258.00	shares	Point-in-time
Treasury Stock, Shares	`TreasuryStockShares`	39,720.00	shares	Point-in-time
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$18.17M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-41.84M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$72.97M	USD	Annual
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$40.00M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$33.85M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$14.13M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-14.18M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$130.89M	USD	Annual
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$669.00K	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-9.94M	USD	1 Quarter
Net income (loss) available for common stock	`NetIncomeLossAvailableToCommonStockholdersBasic`	$-32.11M	USD	Annual
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net income attributable to noncontrolling interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$9.66M	USD	Annual
Net income (loss)	`ProfitLoss`	$82.63M	USD	Annual
Net income (loss)	`ProfitLoss`	$-32.11M	USD	Annual
Net income (loss)	`ProfitLoss`	$130.89M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$2.38M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$5.99M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-25.83M	USD	Annual
Dividends on common stock	`DividendsCommonStockCash`	$69.64M	USD	Annual
Dividends on common stock	`DividendsCommonStockCash`	$87.57M	USD	Annual
Dividends on common stock	`DividendsCommonStockCash`	$72.60M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$4.42M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$5.48M	USD	Annual
Share-based compensation	`StockIssuedDuringPeriodValueShareBasedCompensation`	$4.24M	USD	Annual
Tax effect of share-based compensation	`AdjustmentToAdditionalPaidInCapitalIncomeTaxEffectFromShareBasedCompensationNet`	$-499.00K	USD	Annual
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$254.58M	USD	Annual
Issuance of common stock	`StockIssuedDuringPeriodValueNewIssues`	$119.99M	USD	Annual
Issuance costs	`AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts`	$17.93M	USD	Annual
Issuance costs	`AdjustmentsToAdditionalPaidInCapitalStockIssuedIssuanceCosts`	$1.57M	USD	Annual
Premium on Equity Units	`PremiumonPubliclyTradedEquityUnitsKnownAsCorporateUnits`	$33.12M	USD	Annual
Premium on Equity Units	`PremiumonPubliclyTradedEquityUnitsKnownAsCorporateUnits`	$33.00M	USD	Point-in-time
Dividend reinvestment and stock purchase plan	`StockIssuedDuringPeriodValueDividendReinvestmentPlan`	$2.98M	USD	Annual
Dividend reinvestment and stock purchase plan	`StockIssuedDuringPeriodValueDividendReinvestmentPlan`	$2.88M	USD	Annual
Dividend reinvestment and stock purchase plan	`StockIssuedDuringPeriodValueDividendReinvestmentPlan`	$2.96M	USD	Annual
Other stock transactions	`StockholdersEquityOther`	$25.00K	USD	Annual
Other stock transactions	`StockholdersEquityOther`	$-476.00K	USD	Annual
Other stock transactions	`StockholdersEquityOther`	$41.00K	USD	Annual
Sale of noncontrolling interest	`NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest`	$177.23M	USD	Annual
Distributions to noncontrolling interest	`MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders`	$9.56M	USD	Annual
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.73B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.47B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.35B	USD	Point-in-time
Total equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.28B	USD	Point-in-time
Treasury Stock, Shares	`TreasuryStockShares`	15,258.00	shares	Point-in-time
Treasury Stock, Shares	`TreasuryStockShares`	39,720.00	shares	Point-in-time
Dividends per share paid (usd per share)	`CommonStockDividendsPerShareCashPaid`	$0.41	USD	1 Quarter
Dividends per share paid (usd per share)	`CommonStockDividendsPerShareCashPaid`	$0.41	USD	1 Quarter
Dividends per share paid (usd per share)	`CommonStockDividendsPerShareCashPaid`	$0.41	USD	1 Quarter
Dividends per share paid (usd per share)	`CommonStockDividendsPerShareCashPaid`	$0.42	USD	1 Quarter
Dividends per share paid (usd per share)	`CommonStockDividendsPerShareCashPaid`	$0.42	USD	1 Quarter
Dividends per share paid (usd per share)	`CommonStockDividendsPerShareCashPaid`	$1.62	USD	Annual
Dividends per share paid (usd per share)	`CommonStockDividendsPerShareCashPaid`	$0.42	USD	1 Quarter
Dividends per share paid (usd per share)	`CommonStockDividendsPerShareCashPaid`	$0.42	USD	1 Quarter
Dividends per share paid (usd per share)	`CommonStockDividendsPerShareCashPaid`	$1.56	USD	Annual
Dividends per share paid (usd per share)	`CommonStockDividendsPerShareCashPaid`	$1.68	USD	Annual
Dividends per share paid (usd per share)	`CommonStockDividendsPerShareCashPaid`	$0.41	USD	1 Quarter

Comprehensive Income 39 line items

Line Item	Tag	Value	Unit	Period
Net income (loss)	`ProfitLoss`	$82.63M	USD	Annual
Benefit plan liability adjustments - net gain (loss), Tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-5.00M	USD	Annual
Net income (loss)	`ProfitLoss`	$-32.11M	USD	Annual
Benefit plan liability adjustments - net gain (loss), Tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-757.00K	USD	Annual
Benefit plan liability adjustments - net gain (loss), Tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$1.38M	USD	Annual
Net income (loss)	`ProfitLoss`	$130.89M	USD	Annual
Benefit plan liability adjustments - prior service (costs), Tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect`	-	USD	Annual
Benefit plan liability adjustments - prior service (costs), Tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect`	$-17.00K	USD	Annual
Benefit plan liability adjustments - prior service (costs), Tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect`	$107.00K	USD	Annual
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-1.74M	USD	Annual
Reclassification adjustment of benefit plan liability - net gain (loss) tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-972.00K	USD	Annual
Reclassification adjustment of benefit plan liability - net gain (loss) tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-348.00K	USD	Annual
Reclassification adjustment of benefit plan liability - net gain (loss) tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-600.00K	USD	Annual
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$2.66M	USD	Annual
Other Comprehensive Income (Loss), Pension and Other Postretirement Benefit Plans, Net Unamortized Gain (Loss) Arising During Period, Net of Tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax`	$-10.59M	USD	Annual
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit) Arising During Period, Net of Tax	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	-	USD	Annual
Reclassification adjustment of benefit plan liability - prior service cost, tax	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	$-76.00K	USD	Annual
Reclassification adjustment of benefit plan liability - prior service cost, tax	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	$-67.00K	USD	Annual
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit) Arising During Period, Net of Tax	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$247.00K	USD	Annual
Reclassification adjustment of benefit plan liability - prior service cost, tax	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax`	$-88.00K	USD	Annual
Other Comprehensive (Income) Loss, Pension and Other Postretirement Benefit Plans, Net Prior Service Cost (Credit) Arising During Period, Net of Tax	`OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax`	$-237.00K	USD	Annual
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-646.00K	USD	Annual
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-1.85M	USD	Annual
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Gain (Loss), Net of Tax	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetGainLossNetOfTax`	$-1.38M	USD	Annual
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-154.00K	USD	Annual
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-141.00K	USD	Annual
Other Comprehensive (Income) Loss, Amortization Adjustment from AOCI, Pension and Other Postretirement Benefit Plans, for Net Prior Service Cost (Credit), Net of Tax	`OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax`	$-150.00K	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$2.38M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$5.99M	USD	Annual
Other comprehensive income (loss), net of tax	`OtherComprehensiveIncomeLossNetOfTax`	$-25.83M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$56.80M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-26.12M	USD	Annual
Comprehensive income (loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$133.27M	USD	Annual
Net Income (Loss) Attributable to Noncontrolling Interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net Income (Loss) Attributable to Noncontrolling Interest	`NetIncomeLossAttributableToNoncontrollingInterest`	-	USD	Annual
Net Income (Loss) Attributable to Noncontrolling Interest	`NetIncomeLossAttributableToNoncontrollingInterest`	$9.66M	USD	Annual
Comprehensive income (loss) available for common stock	`ComprehensiveIncomeNetOfTax`	$133.27M	USD	Annual
Comprehensive income (loss) available for common stock	`ComprehensiveIncomeNetOfTax`	$-26.12M	USD	Annual
Comprehensive income (loss) available for common stock	`ComprehensiveIncomeNetOfTax`	$47.14M	USD	Annual

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