10-K Filing

NATIONAL FUEL GAS CO CIK: 70145 FY 2020

Filing Information

Form Type	10-K
Accession Number	`0000070145-20-000032`
Period End Date	20200930
Filing Date	20201120
Fiscal Year	2020
Fiscal Period	FY
XBRL Instance	nfg-20200930_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 122 Income Statement 108 Cash Flow Statement 118 Comprehensive Income 74

Balance Sheet 122 line items

Line Item	Tag	Value	Unit	Period
Receivables, Allowance for Uncollectible Accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$22.81M	USD	Point-in-time
Receivables, Allowance for Uncollectible Accounts	`AllowanceForDoubtfulAccountsReceivableCurrent`	$25.79M	USD	Point-in-time
Common Stock, Par Value	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Common Stock, Par Value	`CommonStockParOrStatedValuePerShare`	$1.00	USD	Point-in-time
Property, Plant and Equipment	`PropertyPlantAndEquipmentGross`	$12.35B	USD	Point-in-time
Property, Plant and Equipment	`PropertyPlantAndEquipmentGross`	$11.20B	USD	Point-in-time
Less - Accumulated Depreciation, Depletion and Amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$5.70B	USD	Point-in-time
Less - Accumulated Depreciation, Depletion and Amortization	`AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment`	$6.35B	USD	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	200.00M	shares	Point-in-time
Common Stock, Shares Authorized	`CommonStockSharesAuthorized`	200.00M	shares	Point-in-time
Common Stock, Shares Issued	`CommonStockSharesIssued`	90.95M	shares	Point-in-time
Property, Plant and Equipment, Net, Total	`PropertyPlantAndEquipmentNet`	$5.51B	USD	Point-in-time
Property, Plant and Equipment, Net, Total	`PropertyPlantAndEquipmentNet`	$6.00B	USD	Point-in-time
Common Stock, Shares Issued	`CommonStockSharesIssued`	86.32M	shares	Point-in-time
Common Stock, Shares Outstanding	`CommonStockSharesOutstanding`	90.95M	shares	Point-in-time
Assets Held for Sale, Net	`AssetsHeldForSaleNotPartOfDisposalGroup`	-	USD	Point-in-time
Assets Held for Sale, Net	`AssetsHeldForSaleNotPartOfDisposalGroup`	$53.42M	USD	Point-in-time
Common Stock, Shares Outstanding	`CommonStockSharesOutstanding`	86.32M	shares	Point-in-time
Cash and Temporary Cash Investments	`CashAndCashEquivalentsAtCarryingValue`	$20.54M	USD	Point-in-time
Cash and Temporary Cash Investments	`CashAndCashEquivalentsAtCarryingValue`	$555.53M	USD	Point-in-time
Cash and Temporary Cash Investments	`CashAndCashEquivalentsAtCarryingValue`	$20.43M	USD	Point-in-time
Cash and Temporary Cash Investments	`CashAndCashEquivalentsAtCarryingValue`	$229.61M	USD	Point-in-time
Hedging Collateral Deposits	`MarginDepositAssets`	-	USD	Point-in-time
Hedging Collateral Deposits	`MarginDepositAssets`	$1.74M	USD	Point-in-time
Hedging Collateral Deposits	`MarginDepositAssets`	$3.44M	USD	Point-in-time
Hedging Collateral Deposits	`MarginDepositAssets`	$6.83M	USD	Point-in-time
Receivables - Net of Allowance for Uncollectible Accounts of $22,810 and $25,788, Respectively	`AccountsAndOtherReceivablesNetCurrent`	$143.58M	USD	Point-in-time
Receivables - Net of Allowance for Uncollectible Accounts of $22,810 and $25,788, Respectively	`AccountsAndOtherReceivablesNetCurrent`	$139.96M	USD	Point-in-time
Unbilled Revenue	`UnbilledReceivablesCurrent`	$17.30M	USD	Point-in-time
Unbilled Revenue	`UnbilledReceivablesCurrent`	$18.76M	USD	Point-in-time
Gas Stored Underground	`EnergyRelatedInventoryGasStoredUnderground`	$33.34M	USD	Point-in-time
Gas Stored Underground	`EnergyRelatedInventoryGasStoredUnderground`	$36.63M	USD	Point-in-time
Materials, Supplies and Emission Allowances	`InventoryRawMaterialsAndSupplies`	$51.88M	USD	Point-in-time
Materials, Supplies and Emission Allowances	`InventoryRawMaterialsAndSupplies`	$40.72M	USD	Point-in-time
Unrecovered Purchased Gas Costs	`UnrecoveredCostsForPurchasedGasAmount`	$2.25M	USD	Point-in-time
Unrecovered Purchased Gas Costs	`UnrecoveredCostsForPurchasedGasAmount`	-	USD	Point-in-time
Other Current Assets	`OtherAssetsCurrent`	$47.56M	USD	Point-in-time
Other Current Assets	`OtherAssetsCurrent`	$97.05M	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$362.62M	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$314.20M	USD	Point-in-time
Recoverable Future Taxes	`RecoverableFutureTaxes`	$115.20M	USD	Point-in-time
Recoverable Future Taxes	`RecoverableFutureTaxes`	$118.31M	USD	Point-in-time
Unamortized Debt Expense	`UnamortizedLossReacquiredDebtNoncurrent`	$12.30M	USD	Point-in-time
Unamortized Debt Expense	`UnamortizedLossReacquiredDebtNoncurrent`	$14.01M	USD	Point-in-time
Other Regulatory Assets	`RegulatoryAssetsNoncurrent`	$167.32M	USD	Point-in-time
Other Regulatory Assets	`RegulatoryAssetsNoncurrent`	$156.11M	USD	Point-in-time
Deferred Charges	`DeferredCosts`	$67.13M	USD	Point-in-time
Deferred Charges	`DeferredCosts`	$33.84M	USD	Point-in-time
Other Investments	`OtherInvestments`	$144.92M	USD	Point-in-time
Other Investments	`OtherInvestments`	$154.50M	USD	Point-in-time
Goodwill	`Goodwill`	$5.48M	USD	Point-in-time
Goodwill	`Goodwill`	$5.48M	USD	Point-in-time
Prepaid Post-Retirement Benefit Costs	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$60.52M	USD	Point-in-time
Prepaid Post-Retirement Benefit Costs	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$76.03M	USD	Point-in-time
Fair Value of Derivative Financial Instruments	`DerivativeInstrumentsAndHedgesNoncurrent`	$9.31M	USD	Point-in-time
Fair Value of Derivative Financial Instruments	`DerivativeInstrumentsAndHedgesNoncurrent`	$48.67M	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$80.00K	USD	Point-in-time
Other	`OtherAssetsNoncurrent`	$81.00K	USD	Point-in-time
Total Other Assets	`TotalOtherAssets`	$599.25M	USD	Point-in-time
Total Other Assets	`TotalOtherAssets`	$590.02M	USD	Point-in-time
Total Assets	`Assets`	$6.04B	USD	Point-in-time
Total Assets	`Assets`	$6.46B	USD	Point-in-time
Total Assets	`Assets`	$6.96B	USD	Point-in-time
Common Stock, $1 Par Value Authorized - 200,000,000 Shares; Issued and Outstanding - 90,954,696 Shares and 86,315,287 Shares, Respectively	`CommonStockValue`	$90.95M	USD	Point-in-time
Common Stock, $1 Par Value Authorized - 200,000,000 Shares; Issued and Outstanding - 90,954,696 Shares and 86,315,287 Shares, Respectively	`CommonStockValue`	$86.31M	USD	Point-in-time
Paid In Capital	`AdditionalPaidInCapital`	$832.26M	USD	Point-in-time
Paid In Capital	`AdditionalPaidInCapital`	$1.00B	USD	Point-in-time
Earnings Reinvested in the Business	`RetainedEarningsAccumulatedDeficit`	$991.63M	USD	Point-in-time
Earnings Reinvested in the Business	`RetainedEarningsAccumulatedDeficit`	$1.27B	USD	Point-in-time
Earnings Reinvested in the Business	`RetainedEarningsAccumulatedDeficit`	$1.10B	USD	Point-in-time
Earnings Reinvested in the Business	`RetainedEarningsAccumulatedDeficit`	$851.67M	USD	Point-in-time
Accumulated Other Comprehensive Loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-52.16M	USD	Point-in-time
Accumulated Other Comprehensive Loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-67.75M	USD	Point-in-time
Accumulated Other Comprehensive Loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-114.76M	USD	Point-in-time
Total Comprehensive Shareholders' Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$1.97B	USD	Point-in-time
Total Comprehensive Shareholders' Equity	`StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest`	$2.14B	USD	Point-in-time
Long-term Debt, Net of Current Portion and Unamortized Discount and Debt Issuance Costs	`LongTermDebtNoncurrent`	$2.13B	USD	Point-in-time
Long-term Debt, Net of Current Portion and Unamortized Discount and Debt Issuance Costs	`LongTermDebtNoncurrent`	$2.63B	USD	Point-in-time
Total Capitalization	`CapitalizationLongtermDebtAndEquity`	$4.27B	USD	Point-in-time
Total Capitalization	`CapitalizationLongtermDebtAndEquity`	$4.60B	USD	Point-in-time
Notes Payable to Banks and Commercial Paper	`ShortTermBorrowings`	$55.20M	USD	Point-in-time
Notes Payable to Banks and Commercial Paper	`ShortTermBorrowings`	$30.00M	USD	Point-in-time
Current Portion of Long-Term Debt	`LongTermDebtCurrent`	-	USD	Point-in-time
Current Portion of Long-Term Debt	`LongTermDebtCurrent`	-	USD	Point-in-time
Accounts Payable	`AccountsPayableCurrent`	$134.13M	USD	Point-in-time
Accounts Payable	`AccountsPayableCurrent`	$132.21M	USD	Point-in-time
Amounts Payable to Customers	`RefundableGasCosts`	$4.02M	USD	Point-in-time
Amounts Payable to Customers	`RefundableGasCosts`	$10.79M	USD	Point-in-time
Dividends Payable	`DividendsPayableCurrent`	$40.48M	USD	Point-in-time
Dividends Payable	`DividendsPayableCurrent`	$37.55M	USD	Point-in-time
Interest Payable on Long-Term Debt	`InterestPayableOnLongTermDebt`	$27.52M	USD	Point-in-time
Interest Payable on Long-Term Debt	`InterestPayableOnLongTermDebt`	$18.51M	USD	Point-in-time
Customer Advances	`CustomerAdvances`	$13.04M	USD	Point-in-time
Customer Advances	`CustomerAdvances`	$15.32M	USD	Point-in-time
Customer Security Deposits	`SecurityDepositLiability`	$16.21M	USD	Point-in-time
Customer Security Deposits	`SecurityDepositLiability`	$17.20M	USD	Point-in-time
Other Accruals and Current Liabilities	`AccruedLiabilitiesCurrent`	$140.18M	USD	Point-in-time
Other Accruals and Current Liabilities	`AccruedLiabilitiesCurrent`	$139.60M	USD	Point-in-time
Fair Value of Derivative Financial Instruments	`DerivativeInstrumentsAndHedgesLiabilities`	$43.97M	USD	Point-in-time
Fair Value of Derivative Financial Instruments	`DerivativeInstrumentsAndHedgesLiabilities`	$5.57M	USD	Point-in-time
Total Current and Accrued Liabilities	`LiabilitiesCurrent`	$459.57M	USD	Point-in-time
Total Current and Accrued Liabilities	`LiabilitiesCurrent`	$421.91M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$696.05M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$653.38M	USD	Point-in-time
Taxes Refundable to Customers	`TaxesRefundableToCustomers`	$366.50M	USD	Point-in-time
Taxes Refundable to Customers	`TaxesRefundableToCustomers`	$357.51M	USD	Point-in-time
Cost of Removal Regulatory Liability	`CostOfRemovalRegulatoryLiability`	$221.70M	USD	Point-in-time
Cost of Removal Regulatory Liability	`CostOfRemovalRegulatoryLiability`	$230.08M	USD	Point-in-time
Other Regulatory Liabilities	`RegulatoryLiabilityNoncurrent`	$161.57M	USD	Point-in-time
Other Regulatory Liabilities	`RegulatoryLiabilityNoncurrent`	$142.37M	USD	Point-in-time
Pension and Other Post-Retirement Liabilities	`PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent`	$127.18M	USD	Point-in-time
Pension and Other Post-Retirement Liabilities	`PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent`	$133.73M	USD	Point-in-time
Asset Retirement Obligations	`AssetRetirementObligationsNoncurrent`	$192.23M	USD	Point-in-time
Asset Retirement Obligations	`AssetRetirementObligationsNoncurrent`	$127.46M	USD	Point-in-time
Other Deferred Credits	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$122.37M	USD	Point-in-time
Other Deferred Credits	`DeferredCreditsAndOtherLiabilitiesNoncurrent`	$139.18M	USD	Point-in-time
Total Deferred Credits	`LiabilitiesNoncurrent`	$1.77B	USD	Point-in-time
Total Deferred Credits	`LiabilitiesNoncurrent`	$1.90B	USD	Point-in-time
Commitments and Contingencies (Note L)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Commitments and Contingencies (Note L)	`CommitmentsAndContingencies`	-	USD	Point-in-time
Total Capitalization and Liabilities	`LiabilitiesAndStockholdersEquity`	$6.96B	USD	Point-in-time
Total Capitalization and Liabilities	`LiabilitiesAndStockholdersEquity`	$6.46B	USD	Point-in-time

Income Statement 108 line items

Line Item	Tag	Value	Unit	Period
Operating Revenues	`Revenues`	$444.19M	USD	1 Quarter
Operating Revenues	`Revenues`	$490.25M	USD	1 Quarter
Operating Revenues	`Revenues`	$323.02M	USD	1 Quarter
Operating Revenues	`Revenues`	$1.59B	USD	Annual
Operating Revenues	`Revenues`	$357.20M	USD	1 Quarter
Operating Revenues	`Revenues`	$491.10M	USD	1 Quarter
Operating Revenues	`Revenues`	$293.34M	USD	1 Quarter
Operating Revenues	`Revenues`	$1.55B	USD	Annual
Operating Revenues	`Revenues`	$1.69B	USD	Annual
Operating Revenues	`Revenues`	$552.54M	USD	1 Quarter
Operating Revenues	`Revenues`	$287.99M	USD	1 Quarter
Purchased Gas	`CostOfGoodsAndServicesSold`	$233.89M	USD	Annual
Purchased Gas	`CostOfGoodsAndServicesSold`	$386.26M	USD	Annual
Purchased Gas	`CostOfGoodsAndServicesSold`	$337.82M	USD	Annual
Property, Franchise and Other Taxes	`TaxesExcludingIncomeAndExciseTaxes`	$88.89M	USD	Annual
Property, Franchise and Other Taxes	`TaxesExcludingIncomeAndExciseTaxes`	$88.40M	USD	Annual
Property, Franchise and Other Taxes	`TaxesExcludingIncomeAndExciseTaxes`	$84.39M	USD	Annual
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$240.96M	USD	Annual
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$306.16M	USD	Annual
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$275.66M	USD	Annual
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	$449.44M	USD	Annual
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	-	USD	Annual
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	$177.80M	USD	1 Quarter
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	-	USD	Annual
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	$18.20M	USD	1 Quarter
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	$253.40M	USD	1 Quarter
Total Operating Expenses	`CostsAndExpenses`	$1.18B	USD	Annual
Total Operating Expenses	`CostsAndExpenses`	$1.07B	USD	Annual
Total Operating Expenses	`CostsAndExpenses`	$1.52B	USD	Annual
Operating Income	`OperatingIncomeLoss`	$29.86M	USD	Annual
Operating Income	`OperatingIncomeLoss`	$148.02M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$519.72M	USD	Annual
Operating Income	`OperatingIncomeLoss`	$83.94M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$112.83M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$161.68M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$-24.58M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$153.36M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$-173.98M	USD	1 Quarter
Operating Income	`OperatingIncomeLoss`	$511.81M	USD	Annual
Operating Income	`OperatingIncomeLoss`	$80.40M	USD	1 Quarter
Other Income (Deductions)	`OtherNonoperatingIncomeExpense`	$-17.81M	USD	Annual
Other Income (Deductions)	`OtherNonoperatingIncomeExpense`	$-15.54M	USD	Annual
Other Income (Deductions)	`OtherNonoperatingIncomeExpense`	$-21.17M	USD	Annual
Interest Expense on Long-Term Debt	`InterestExpenseLongTermDebt`	$110.01M	USD	Annual
Interest Expense on Long-Term Debt	`InterestExpenseLongTermDebt`	$110.95M	USD	Annual
Interest Expense on Long-Term Debt	`InterestExpenseLongTermDebt`	$101.61M	USD	Annual
Other Interest Expense	`InterestExpenseOther`	$3.58M	USD	Annual
Other Interest Expense	`InterestExpenseOther`	$5.14M	USD	Annual
Other Interest Expense	`InterestExpenseOther`	$7.07M	USD	Annual
Income (Loss) Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$389.51M	USD	Annual
Income (Loss) Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-105.03M	USD	Annual
Income (Loss) Before Income Taxes	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$384.03M	USD	Annual
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$18.74M	USD	Annual
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$-7.49M	USD	Annual
Income Tax Expense (Benefit)	`IncomeTaxExpenseBenefit`	$85.22M	USD	Annual
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$391.52M	USD	Annual
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$-106.07M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$63.75M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$90.59M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$41.25M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$86.59M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$-145.54M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$47.28M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$102.66M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$304.29M	USD	Annual
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$-123.77M	USD	Annual
Balance at Beginning of Year	`RetainedEarningsAccumulatedDeficit`	$991.63M	USD	Point-in-time
Balance at Beginning of Year	`RetainedEarningsAccumulatedDeficit`	$1.27B	USD	Point-in-time
Balance at Beginning of Year	`RetainedEarningsAccumulatedDeficit`	$1.10B	USD	Point-in-time
Balance at Beginning of Year	`RetainedEarningsAccumulatedDeficit`	$851.67M	USD	Point-in-time
Beginning Retained Earnings Unappropriated And Current Period Net Income	`BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss`	$1.15B	USD	Annual
Beginning Retained Earnings Unappropriated And Current Period Net Income	`BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss`	$1.40B	USD	Annual
Beginning Retained Earnings Unappropriated And Current Period Net Income	`BeginningRetainedEarningsUnappropriatedAndCurrentPeriodNetIncomeLoss`	$1.24B	USD	Annual
Dividends on Common Stock	`DividendsCommonStockCash`	$144.29M	USD	Annual
Dividends on Common Stock	`DividendsCommonStockCash`	$156.25M	USD	Annual
Dividends on Common Stock	`DividendsCommonStockCash`	$148.43M	USD	Annual
Balance at End of Year	`RetainedEarningsAccumulatedDeficit`	$991.63M	USD	Point-in-time
Balance at End of Year	`RetainedEarningsAccumulatedDeficit`	$1.27B	USD	Point-in-time
Balance at End of Year	`RetainedEarningsAccumulatedDeficit`	$1.10B	USD	Point-in-time
Balance at End of Year	`RetainedEarningsAccumulatedDeficit`	$851.67M	USD	Point-in-time
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareBasic`	$3.53	USD	Annual
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareBasic`	$1.05	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareBasic`	$1.00	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareBasic`	$-1.60	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareBasic`	$-1.23	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareBasic`	$0.55	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareBasic`	$1.19	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareBasic`	$4.56	USD	Annual
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareBasic`	$0.47	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareBasic`	$0.74	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareBasic`	$-1.41	USD	Annual
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareDiluted`	$4.53	USD	Annual
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareDiluted`	$1.00	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareDiluted`	$1.04	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareDiluted`	$3.51	USD	Annual
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareDiluted`	$-1.60	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareDiluted`	$-1.23	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareDiluted`	$1.18	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareDiluted`	$0.47	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareDiluted`	$0.54	USD	1 Quarter
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareDiluted`	$-1.41	USD	Annual
Net Income (Loss) Available for Common Stock (in dollars per share)	`EarningsPerShareDiluted`	$0.73	USD	1 Quarter
Used in Basic Calculation	`WeightedAverageNumberOfSharesOutstandingBasic`	86.24M	shares	Annual
Used in Basic Calculation	`WeightedAverageNumberOfSharesOutstandingBasic`	87.97M	shares	Annual
Used in Basic Calculation	`WeightedAverageNumberOfSharesOutstandingBasic`	85.83M	shares	Annual
Used in Diluted Calculation	`WeightedAverageNumberOfDilutedSharesOutstanding`	86.44M	shares	Annual
Used in Diluted Calculation	`WeightedAverageNumberOfDilutedSharesOutstanding`	87.97M	shares	Annual
Used in Diluted Calculation	`WeightedAverageNumberOfDilutedSharesOutstanding`	86.77M	shares	Annual

Cash Flow Statement 118 line items

Line Item	Tag	Value	Unit	Period
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$391.52M	USD	Annual
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$-106.07M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$63.75M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$90.59M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$41.25M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$86.59M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$-145.54M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$47.28M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$102.66M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$304.29M	USD	Annual
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$-123.77M	USD	Annual
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	$449.44M	USD	Annual
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	-	USD	Annual
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	$177.80M	USD	1 Quarter
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	-	USD	Annual
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	$18.20M	USD	1 Quarter
Impairment of Oil and Gas Producing Properties	`ImpairmentofOilandGasProducingProperties`	$253.40M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$240.96M	USD	Annual
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$306.16M	USD	Annual
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$275.66M	USD	Annual
Deferred Income Taxes	`DeferredIncomeTaxesAndTaxCredits`	$122.27M	USD	Annual
Deferred Income Taxes	`DeferredIncomeTaxesAndTaxCredits`	$54.31M	USD	Annual
Deferred Income Taxes	`DeferredIncomeTaxesAndTaxCredits`	$-18.15M	USD	Annual
Stock-Based Compensation	`ShareBasedCompensation`	$15.76M	USD	Annual
Stock-Based Compensation	`ShareBasedCompensation`	$14.93M	USD	Annual
Stock-Based Compensation	`ShareBasedCompensation`	$21.19M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-6.53M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-16.13M	USD	Annual
Other	`OtherNoncashIncomeExpense`	$-8.61M	USD	Annual
Receivables and Unbilled Revenue	`IncreaseDecreaseInReceivables`	$2.58M	USD	Annual
Receivables and Unbilled Revenue	`IncreaseDecreaseInReceivables`	$-6.38M	USD	Annual
Receivables and Unbilled Revenue	`IncreaseDecreaseInReceivables`	$30.88M	USD	Annual
Gas Stored Underground and Materials, Supplies and Emission Allowances	`IncreaseDecreaseInInventories`	$3.71M	USD	Annual
Gas Stored Underground and Materials, Supplies and Emission Allowances	`IncreaseDecreaseInInventories`	$6.62M	USD	Annual
Gas Stored Underground and Materials, Supplies and Emission Allowances	`IncreaseDecreaseInInventories`	$4.02M	USD	Annual
Unrecovered Purchased Gas Costs	`IncreaseDecreaseInDeferredGasCost`	$-419.00K	USD	Annual
Unrecovered Purchased Gas Costs	`IncreaseDecreaseInDeferredGasCost`	$-2.25M	USD	Annual
Unrecovered Purchased Gas Costs	`IncreaseDecreaseInDeferredGasCost`	$-1.96M	USD	Annual
Other Current Assets	`IncreaseDecreaseInOtherCurrentAssets`	$-49.37M	USD	Annual
Other Current Assets	`IncreaseDecreaseInOtherCurrentAssets`	$29.03M	USD	Annual
Other Current Assets	`IncreaseDecreaseInOtherCurrentAssets`	$16.52M	USD	Annual
Accounts Payable	`IncreaseDecreaseInAccountsPayableTrade`	$-4.66M	USD	Annual
Accounts Payable	`IncreaseDecreaseInAccountsPayableTrade`	$17.96M	USD	Annual
Accounts Payable	`IncreaseDecreaseInAccountsPayableTrade`	$-24.77M	USD	Annual
Amounts Payable to Customers	`IncreaseDecreaseInRegulatoryClauseRevenue`	$6.77M	USD	Annual
Amounts Payable to Customers	`IncreaseDecreaseInRegulatoryClauseRevenue`	$3.39M	USD	Annual
Amounts Payable to Customers	`IncreaseDecreaseInRegulatoryClauseRevenue`	$623.00K	USD	Annual
Customer Advances	`IncreaseDecreaseInCustomerAdvancesCurrent`	$2.27M	USD	Annual
Customer Advances	`IncreaseDecreaseInCustomerAdvancesCurrent`	$-2.09M	USD	Annual
Customer Advances	`IncreaseDecreaseInCustomerAdvancesCurrent`	$-565.00K	USD	Annual
Customer Security Deposits	`IncreaseDecreaseInSecurityDeposits`	$989.00K	USD	Annual
Customer Security Deposits	`IncreaseDecreaseInSecurityDeposits`	$-9.49M	USD	Annual
Customer Security Deposits	`IncreaseDecreaseInSecurityDeposits`	$5.33M	USD	Annual
Other Accruals and Current Liabilities	`IncreaseDecreaseInAccruedLiabilities`	$3.87M	USD	Annual
Other Accruals and Current Liabilities	`IncreaseDecreaseInAccruedLiabilities`	$10.99M	USD	Annual
Other Accruals and Current Liabilities	`IncreaseDecreaseInAccruedLiabilities`	$5.00M	USD	Annual
Other Assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$9.56M	USD	Annual
Other Assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$24.20M	USD	Annual
Other Assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$-5.12M	USD	Annual
Other Liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$4.63M	USD	Annual
Other Liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$4.98M	USD	Annual
Other Liabilities	`IncreaseDecreaseInOtherOperatingLiabilities`	$1.18M	USD	Annual
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$694.48M	USD	Annual
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$615.30M	USD	Annual
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$740.81M	USD	Annual
Capital Expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$584.00M	USD	Annual
Capital Expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$788.94M	USD	Annual
Capital Expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$716.15M	USD	Annual
Acquisition of Upstream Assets and Midstream Gathering Assets	`AcquisitionOfUpstreamAssetsAndMidstreamGatheringAssets`	-	USD	Annual
Acquisition of Upstream Assets and Midstream Gathering Assets	`AcquisitionOfUpstreamAssetsAndMidstreamGatheringAssets`	$506.26M	USD	Annual
Acquisition of Upstream Assets and Midstream Gathering Assets	`AcquisitionOfUpstreamAssetsAndMidstreamGatheringAssets`	-	USD	Annual
Net Proceeds from Sale of Oil and Gas Producing Properties	`ProceedsFromSaleOfOilAndGasPropertyAndEquipment`	-	USD	Annual
Net Proceeds from Sale of Oil and Gas Producing Properties	`ProceedsFromSaleOfOilAndGasPropertyAndEquipment`	$55.51M	USD	Annual
Net Proceeds from Sale of Oil and Gas Producing Properties	`ProceedsFromSaleOfOilAndGasPropertyAndEquipment`	-	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$10.24M	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$389.00K	USD	Annual
Other	`PaymentsForProceedsFromOtherInvestingActivities`	$1.21M	USD	Annual
Net Cash Used in Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-799.17M	USD	Annual
Net Cash Used in Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-528.89M	USD	Annual
Net Cash Used in Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-1.22B	USD	Annual
Change in Notes Payable to Banks and Commercial Paper	`ProceedsFromRepaymentsOfShortTermDebt`	$55.20M	USD	Annual
Change in Notes Payable to Banks and Commercial Paper	`ProceedsFromRepaymentsOfShortTermDebt`	-	USD	Annual
Change in Notes Payable to Banks and Commercial Paper	`ProceedsFromRepaymentsOfShortTermDebt`	$-25.20M	USD	Annual
Net Proceeds from Issuance of Long-Term Debt	`ProceedsFromIssuanceOfLongTermDebt`	$295.02M	USD	Annual
Net Proceeds from Issuance of Long-Term Debt	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	Annual
Net Proceeds from Issuance of Long-Term Debt	`ProceedsFromIssuanceOfLongTermDebt`	$493.01M	USD	Annual
Reduction of Long-Term Debt	`RepaymentsOfLongTermDebt`	-	USD	Annual
Reduction of Long-Term Debt	`RepaymentsOfLongTermDebt`	-	USD	Annual
Reduction of Long-Term Debt	`RepaymentsOfLongTermDebt`	$566.51M	USD	Annual
Net Repurchases of Common Stock	`PaymentsForRepurchaseOfEquity`	$8.88M	USD	Annual
Net Proceeds from Issuance of Common Stock	`ProceedsFromIssuanceOrSaleOfEquity`	$161.60M	USD	Annual
Net Proceeds from Issuance of Common Stock	`ProceedsFromIssuanceOrSaleOfEquity`	$4.11M	USD	Annual
Dividends Paid on Common Stock	`PaymentsOfDividendsCommonStock`	$147.42M	USD	Annual
Dividends Paid on Common Stock	`PaymentsOfDividendsCommonStock`	$143.26M	USD	Annual
Dividends Paid on Common Stock	`PaymentsOfDividendsCommonStock`	$153.32M	USD	Annual
Net Cash Provided by (Used in) Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$476.09M	USD	Annual
Net Cash Provided by (Used in) Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-410.64M	USD	Annual
Net Cash Provided by (Used in) Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-101.09M	USD	Annual
Net Decrease in Cash, Cash Equivalents, and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$-324.22M	USD	Annual
Net Decrease in Cash, Cash Equivalents, and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$-6.72M	USD	Annual
Net Decrease in Cash, Cash Equivalents, and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect`	$-205.79M	USD	Annual
Cash, Cash Equivalents and Restricted Cash At Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$557.27M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash At Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$20.54M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash At Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$27.26M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash At Beginning of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$233.05M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash At End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$557.27M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash At End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$20.54M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash At End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$27.26M	USD	Point-in-time
Cash, Cash Equivalents and Restricted Cash At End of Year	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$233.05M	USD	Point-in-time
Cash Paid for Interest	`InterestPaidNet`	$126.08M	USD	Annual
Cash Paid for Interest	`InterestPaidNet`	$103.48M	USD	Annual
Cash Paid for Interest	`InterestPaidNet`	$102.92M	USD	Annual
Cash Refunded for Income Taxes	`ProceedsFromIncomeTaxRefunds`	$17.34M	USD	Annual
Cash Refunded for Income Taxes	`ProceedsFromIncomeTaxRefunds`	$82.88M	USD	Annual
Cash Paid for Income Taxes	`IncomeTaxesPaidNet`	$31.77M	USD	Annual
Non-Cash Capital Expenditures	`CapitalExpendituresIncurredButNotYetPaid`	$81.12M	USD	Annual
Non-Cash Capital Expenditures	`CapitalExpendituresIncurredButNotYetPaid`	$87.33M	USD	Annual
Non-Cash Capital Expenditures	`CapitalExpendituresIncurredButNotYetPaid`	$88.81M	USD	Annual

Comprehensive Income 74 line items

Line Item	Tag	Value	Unit	Period
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$391.52M	USD	Annual
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$-106.07M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$63.75M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$90.59M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$41.25M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$86.59M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$-145.54M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$47.28M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$102.66M	USD	1 Quarter
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$304.29M	USD	Annual
Net Income (Loss) Available for Common Stock	`NetIncomeLoss`	$-123.77M	USD	Annual
Increase (Decrease) in the Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax`	$19.21M	USD	Annual
Increase (Decrease) in the Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax`	$-6.22M	USD	Annual
Increase (Decrease) in the Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsAndTax`	$44.09M	USD	Annual
Reclassification Adjustment for Amortization of Prior Year Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax`	$15.36M	USD	Annual
Reclassification Adjustment for Amortization of Prior Year Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax`	$7.33M	USD	Annual
Reclassification Adjustment for Amortization of Prior Year Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansBeforeTax`	$9.70M	USD	Annual
Unrealized Gain (Loss) on Securities Available for Sale Arising During the Period	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax`	-	USD	Annual
Unrealized Gain (Loss) on Securities Available for Sale Arising During the Period	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax`	-	USD	Annual
Unrealized Gain (Loss) on Securities Available for Sale Arising During the Period	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax`	$132.00K	USD	Annual
Amount of Derivative Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on the Consolidated Statement of Comprehensive Income (Loss)	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationAndTax`	$9.86M	USD	Annual
Amount of Derivative Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on the Consolidated Statement of Comprehensive Income (Loss)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$79.30M	USD	Annual
Amount of Derivative Gain or (Loss) Recognized in Other Comprehensive Income (Loss) on the Consolidated Statement of Comprehensive Income (Loss)	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodBeforeTax`	$-74.10M	USD	Annual
Reclassification Adjustment for Realized (Gains) Losses on Securities Available for Sale in Net Income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax`	-	USD	Annual
Reclassification Adjustment for Realized (Gains) Losses on Securities Available for Sale in Net Income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax`	-	USD	Annual
Reclassification Adjustment for Realized (Gains) Losses on Securities Available for Sale in Net Income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesBeforeTax`	$430.00K	USD	Annual
Reclassification Adjustment for Realized (Gains) Losses on Derivative Financial Instruments in Net Income	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationBeforeTax`	$93.30M	USD	Annual
Reclassification Adjustment for Realized (Gains) Losses on Derivative Financial Instruments in Net Income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax`	$-5.46M	USD	Annual
Reclassification Adjustment for Realized (Gains) Losses on Derivative Financial Instruments in Net Income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesBeforeTax`	$-1.19M	USD	Annual
Cumulative Effect of Adoption of Authoritative Guidance for Hedging	`OtherComprehensiveIncomeLossCumulativeEffectofAdoptionofAuthoritativeGuidanceforHedging`	$1.31M	USD	Annual
Cumulative Effect of Adoption of Authoritative Guidance for Hedging	`OtherComprehensiveIncomeLossCumulativeEffectofAdoptionofAuthoritativeGuidanceforHedging`	-	USD	Annual
Cumulative Effect of Adoption of Authoritative Guidance for Hedging	`OtherComprehensiveIncomeLossCumulativeEffectofAdoptionofAuthoritativeGuidanceforHedging`	-	USD	Annual
Reclassification Adjustment for the Cumulative Effect of Adoption of Authoritative Guidance for Financial Assets and Liabilities to Earnings Reinvested in the Business	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIforCumulativeEffectofAdoptionofAuthoritativeGuidanceforFinancialAssetsandLiabilities`	$-11.74M	USD	Annual
Reclassification Adjustment for the Cumulative Effect of Adoption of Authoritative Guidance for Financial Assets and Liabilities to Earnings Reinvested in the Business	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIforCumulativeEffectofAdoptionofAuthoritativeGuidanceforFinancialAssetsandLiabilities`	-	USD	Annual
Reclassification Adjustment for the Cumulative Effect of Adoption of Authoritative Guidance for Financial Assets and Liabilities to Earnings Reinvested in the Business	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIforCumulativeEffectofAdoptionofAuthoritativeGuidanceforFinancialAssetsandLiabilities`	-	USD	Annual
Other Comprehensive Income (Loss), Before Tax	`OtherComprehensiveIncomeLossBeforeTax`	$-57.28M	USD	Annual
Other Comprehensive Income (Loss), Before Tax	`OtherComprehensiveIncomeLossBeforeTax`	$-85.97M	USD	Annual
Other Comprehensive Income (Loss), Before Tax	`OtherComprehensiveIncomeLossBeforeTax`	$36.27M	USD	Annual
Income Tax Expense (Benefit) Related to the Increase (Decrease) in the Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax`	$4.36M	USD	Annual
Income Tax Expense (Benefit) Related to the Increase (Decrease) in the Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax`	$10.47M	USD	Annual
Income Tax Expense (Benefit) Related to the Increase (Decrease) in the Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBeforeReclassificationAdjustmentsTax`	$-1.58M	USD	Annual
Reclassification Adjustment for Income Tax Benefit Related to the Amortization of the Prior Year Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$1.70M	USD	Annual
Reclassification Adjustment for Income Tax Benefit Related to the Amortization of the Prior Year Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$3.57M	USD	Annual
Reclassification Adjustment for Income Tax Benefit Related to the Amortization of the Prior Year Funded Status of the Pension and Other Post-Retirement Benefit Plans	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansTax`	$2.44M	USD	Annual
Income Tax Expense (Benefit) Related to Unrealized Gain (Loss) on Securities Available for Sale Arising During the Period	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	$-15.00K	USD	Annual
Income Tax Expense (Benefit) Related to Unrealized Gain (Loss) on Securities Available for Sale Arising During the Period	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	-	USD	Annual
Income Tax Expense (Benefit) Related to Unrealized Gain (Loss) on Securities Available for Sale Arising During the Period	`OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax`	-	USD	Annual
Income Tax Expense (Benefit) Related to Unrealized Gain (Loss) on Derivative Financial Instruments Arising During the Period	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossBeforeReclassificationTax`	$2.58M	USD	Annual
Income Tax Expense (Benefit) Related to Unrealized Gain (Loss) on Derivative Financial Instruments Arising During the Period	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax`	$-22.55M	USD	Annual
Income Tax Expense (Benefit) Related to Unrealized Gain (Loss) on Derivative Financial Instruments Arising During the Period	`OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax`	$20.62M	USD	Annual
Reclassification Adjustment for Income Tax Benefit (Expense) on Realized Losses (Gains) from Securities Available for Sale in Net Income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	$158.00K	USD	Annual
Reclassification Adjustment for Income Tax Benefit (Expense) on Realized Losses (Gains) from Securities Available for Sale in Net Income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	-	USD	Annual
Reclassification Adjustment for Income Tax Benefit (Expense) on Realized Losses (Gains) from Securities Available for Sale in Net Income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax`	-	USD	Annual
Reclassification Adjustment for Income Tax Benefit (Expense) on Realized Losses (Gains) from Derivative Financial Instruments in Net Income	`OtherComprehensiveIncomeLossCashFlowHedgeGainLossReclassificationTax`	$25.52M	USD	Annual
Reclassification Adjustment for Income Tax Benefit (Expense) on Realized Losses (Gains) from Derivative Financial Instruments in Net Income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$-2.73M	USD	Annual
Reclassification Adjustment for Income Tax Benefit (Expense) on Realized Losses (Gains) from Derivative Financial Instruments in Net Income	`OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax`	$955.00K	USD	Annual
Income Tax Benefit (Expense) on Cumulative Effect of Adoption of Authoritative Guidance for Hedging	`OtherComprehensiveIncomeLossCumulativeEffectofAdoptionofAuthoritativeGuidanceforHedgingTax`	-	USD	Annual
Income Tax Benefit (Expense) on Cumulative Effect of Adoption of Authoritative Guidance for Hedging	`OtherComprehensiveIncomeLossCumulativeEffectofAdoptionofAuthoritativeGuidanceforHedgingTax`	-	USD	Annual
Income Tax Benefit (Expense) on Cumulative Effect of Adoption of Authoritative Guidance for Hedging	`OtherComprehensiveIncomeLossCumulativeEffectofAdoptionofAuthoritativeGuidanceforHedgingTax`	$363.00K	USD	Annual
Reclassification Adjustment for Income Tax Benefit (Expense) on the Cumulative Effect of Adoption of Authoritative Guidance for Financial Assets and Liabilities to Earnings Reinvested in the Business	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIforCumulativeEffectofAdoptionofAuthoritativeGuidanceforFinancialAssetsandLiabilitiesTax`	-	USD	Annual
Reclassification Adjustment for Income Tax Benefit (Expense) on the Cumulative Effect of Adoption of Authoritative Guidance for Financial Assets and Liabilities to Earnings Reinvested in the Business	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIforCumulativeEffectofAdoptionofAuthoritativeGuidanceforFinancialAssetsandLiabilitiesTax`	$4.30M	USD	Annual
Reclassification Adjustment for Income Tax Benefit (Expense) on the Cumulative Effect of Adoption of Authoritative Guidance for Financial Assets and Liabilities to Earnings Reinvested in the Business	`OtherComprehensiveIncomeLossReclassificationAdjustmentfromAOCIforCumulativeEffectofAdoptionofAuthoritativeGuidanceforFinancialAssetsandLiabilitiesTax`	-	USD	Annual
Reclassification Adjustment for Stranded Tax Effects Related to the 2017 Tax Reform Act to Earnings Reinvested in the Business	`TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect`	-	USD	Annual
Reclassification Adjustment for Stranded Tax Effects Related to the 2017 Tax Reform Act to Earnings Reinvested in the Business	`TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect`	$-10.41M	USD	Annual
Reclassification Adjustment for Stranded Tax Effects Related to the 2017 Tax Reform Act to Earnings Reinvested in the Business	`TaxCutsAndJobsActOf2017ReclassificationFromAociToRetainedEarningsTaxEffect`	-	USD	Annual
Income Taxes - Net	`OtherComprehensiveIncomeLossTax`	$-23.37M	USD	Annual
Income Taxes - Net	`OtherComprehensiveIncomeLossTax`	$-19.66M	USD	Annual
Income Taxes - Net	`OtherComprehensiveIncomeLossTax`	$20.68M	USD	Annual
Other Comprehensive Income (Loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-62.60M	USD	Annual
Other Comprehensive Income (Loss)	`OtherComprehensiveIncomeLossNetOfTax`	$-37.63M	USD	Annual
Other Comprehensive Income (Loss)	`OtherComprehensiveIncomeLossNetOfTax`	$15.60M	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$319.88M	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$353.89M	USD	Annual
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest`	$-186.37M	USD	Annual

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