10-Q Filing

CORE NATURAL RESOURCES, INC. CIK: 1710366 Q3 2025

Filing Information

Form Type	10-Q
Accession Number	`0001710366-25-000030`
Period End Date	20250930
Filing Date	20251106
Fiscal Year	2025
Fiscal Period	Q3
XBRL Instance	cnr-20250930_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 172 Income Statement 148 Cash Flow Statement 188 Stockholders Equity 216 Comprehensive Income 104

Balance Sheet 172 line items

Line Item	Tag	Value	Unit	Period
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, par value (in dollars per share)	`CommonStockParOrStatedValuePerShare`	$0.01	USD	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	62.50M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	62.50M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	125.00M	shares	Point-in-time
Common stock, shares authorized (in shares)	`CommonStockSharesAuthorized`	125.00M	shares	Point-in-time
Cash and Cash Equivalents	`CashAndCashEquivalentsAtCarryingValue`	$331.67M	USD	Point-in-time
Cash and Cash Equivalents	`CashAndCashEquivalentsAtCarryingValue`	$331.67M	USD	Point-in-time
Cash and Cash Equivalents	`CashAndCashEquivalentsAtCarryingValue`	$408.24M	USD	Point-in-time
Cash and Cash Equivalents	`CashAndCashEquivalentsAtCarryingValue`	$408.24M	USD	Point-in-time
Cash and Cash Equivalents	`CashAndCashEquivalentsAtCarryingValue`	$444.67M	USD	Point-in-time
Cash and Cash Equivalents	`CashAndCashEquivalentsAtCarryingValue`	$444.67M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	29.41M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	29.41M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	51.22M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	51.22M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	29.41M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	29.41M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	51.22M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	51.22M	shares	Point-in-time
Short-Term Investments	`DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent`	$51.99M	USD	Point-in-time
Short-Term Investments	`DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent`	$51.99M	USD	Point-in-time
Short-Term Investments	`DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent`	-	USD	Point-in-time
Short-Term Investments	`DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent`	-	USD	Point-in-time
Trade Receivables, net	`AccountsReceivableNetCurrent`	$136.75M	USD	Point-in-time
Trade Receivables, net	`AccountsReceivableNetCurrent`	$136.75M	USD	Point-in-time
Trade Receivables, net	`AccountsReceivableNetCurrent`	$328.60M	USD	Point-in-time
Trade Receivables, net	`AccountsReceivableNetCurrent`	$328.60M	USD	Point-in-time
Other Receivables, net	`OtherReceivablesNetCurrent`	$25.90M	USD	Point-in-time
Other Receivables, net	`OtherReceivablesNetCurrent`	$25.90M	USD	Point-in-time
Other Receivables, net	`OtherReceivablesNetCurrent`	$46.28M	USD	Point-in-time
Other Receivables, net	`OtherReceivablesNetCurrent`	$46.28M	USD	Point-in-time
Inventories	`InventoryNet`	$96.20M	USD	Point-in-time
Inventories	`InventoryNet`	$96.20M	USD	Point-in-time
Inventories	`InventoryNet`	$407.50M	USD	Point-in-time
Inventories	`InventoryNet`	$407.50M	USD	Point-in-time
Other Current Assets	`OtherAssetsCurrent`	$66.87M	USD	Point-in-time
Other Current Assets	`OtherAssetsCurrent`	$66.87M	USD	Point-in-time
Other Current Assets	`OtherAssetsCurrent`	$173.37M	USD	Point-in-time
Other Current Assets	`OtherAssetsCurrent`	$173.37M	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$785.96M	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$785.96M	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$1.40B	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$1.40B	USD	Point-in-time
Total Property, Plant and EquipmentNet	`PropertyPlantAndEquipmentNet`	$1.92B	USD	Point-in-time
Total Property, Plant and EquipmentNet	`PropertyPlantAndEquipmentNet`	$1.92B	USD	Point-in-time
Total Property, Plant and EquipmentNet	`PropertyPlantAndEquipmentNet`	$4.39B	USD	Point-in-time
Total Property, Plant and EquipmentNet	`PropertyPlantAndEquipmentNet`	$4.39B	USD	Point-in-time
Funds for Asset Retirement Obligations	`FundsForAssetRetirementObligations`	$12.05M	USD	Point-in-time
Funds for Asset Retirement Obligations	`FundsForAssetRetirementObligations`	$12.05M	USD	Point-in-time
Funds for Asset Retirement Obligations	`FundsForAssetRetirementObligations`	$139.93M	USD	Point-in-time
Funds for Asset Retirement Obligations	`FundsForAssetRetirementObligations`	$139.93M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$41.94M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$41.94M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$45.65M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$45.65M	USD	Point-in-time
Other Noncurrent Assets, net	`OtherAssetsMiscellaneousNoncurrent`	$117.89M	USD	Point-in-time
Other Noncurrent Assets, net	`OtherAssetsMiscellaneousNoncurrent`	$117.89M	USD	Point-in-time
Other Noncurrent Assets, net	`OtherAssetsMiscellaneousNoncurrent`	$219.50M	USD	Point-in-time
Other Noncurrent Assets, net	`OtherAssetsMiscellaneousNoncurrent`	$219.50M	USD	Point-in-time
Total Other Assets	`OtherAssetsNoncurrent`	$171.89M	USD	Point-in-time
Total Other Assets	`OtherAssetsNoncurrent`	$171.89M	USD	Point-in-time
Total Other Assets	`OtherAssetsNoncurrent`	$405.09M	USD	Point-in-time
Total Other Assets	`OtherAssetsNoncurrent`	$405.09M	USD	Point-in-time
TOTAL ASSETS	`Assets`	$2.82B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$2.82B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$2.88B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$2.88B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$6.20B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$6.20B	USD	Point-in-time
Accounts Payable	`AccountsPayableCurrent`	$143.63M	USD	Point-in-time
Accounts Payable	`AccountsPayableCurrent`	$143.63M	USD	Point-in-time
Accounts Payable	`AccountsPayableCurrent`	$286.32M	USD	Point-in-time
Accounts Payable	`AccountsPayableCurrent`	$286.32M	USD	Point-in-time
Current Portion of Long-Term Debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$112.86M	USD	Point-in-time
Current Portion of Long-Term Debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$112.86M	USD	Point-in-time
Current Portion of Long-Term Debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$83.80M	USD	Point-in-time
Current Portion of Long-Term Debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$83.80M	USD	Point-in-time
Other Accrued Liabilities	`AccruedLiabilitiesCurrent`	$262.18M	USD	Point-in-time
Other Accrued Liabilities	`AccruedLiabilitiesCurrent`	$262.18M	USD	Point-in-time
Other Accrued Liabilities	`AccruedLiabilitiesCurrent`	$399.64M	USD	Point-in-time
Other Accrued Liabilities	`AccruedLiabilitiesCurrent`	$399.64M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$518.68M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$518.68M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$769.76M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$769.76M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$79.52M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$79.52M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$313.22M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$313.22M	USD	Point-in-time
Finance Lease Obligations	`FinanceLeaseLiabilityNoncurrent`	$15.27M	USD	Point-in-time
Finance Lease Obligations	`FinanceLeaseLiabilityNoncurrent`	$15.27M	USD	Point-in-time
Finance Lease Obligations	`FinanceLeaseLiabilityNoncurrent`	$21.29M	USD	Point-in-time
Finance Lease Obligations	`FinanceLeaseLiabilityNoncurrent`	$21.29M	USD	Point-in-time
Total Long-Term Debt	`LongTermDebtAndCapitalLeaseObligations`	$94.79M	USD	Point-in-time
Total Long-Term Debt	`LongTermDebtAndCapitalLeaseObligations`	$94.79M	USD	Point-in-time
Total Long-Term Debt	`LongTermDebtAndCapitalLeaseObligations`	$334.51M	USD	Point-in-time
Total Long-Term Debt	`LongTermDebtAndCapitalLeaseObligations`	$334.51M	USD	Point-in-time
Postretirement Benefits Other Than Pensions	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$176.25M	USD	Point-in-time
Postretirement Benefits Other Than Pensions	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$176.25M	USD	Point-in-time
Postretirement Benefits Other Than Pensions	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$208.95M	USD	Point-in-time
Postretirement Benefits Other Than Pensions	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$208.95M	USD	Point-in-time
Pneumoconiosis Benefits	`EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent`	$145.49M	USD	Point-in-time
Pneumoconiosis Benefits	`EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent`	$145.49M	USD	Point-in-time
Pneumoconiosis Benefits	`EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent`	$250.29M	USD	Point-in-time
Pneumoconiosis Benefits	`EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent`	$250.29M	USD	Point-in-time
Asset Retirement Obligations	`AssetRetirementObligationsNoncurrent`	$212.18M	USD	Point-in-time
Asset Retirement Obligations	`AssetRetirementObligationsNoncurrent`	$212.18M	USD	Point-in-time
Asset Retirement Obligations	`AssetRetirementObligationsNoncurrent`	$492.04M	USD	Point-in-time
Asset Retirement Obligations	`AssetRetirementObligationsNoncurrent`	$492.04M	USD	Point-in-time
Workers Compensation	`WorkersCompensationLiabilityNoncurrent`	$36.05M	USD	Point-in-time
Workers Compensation	`WorkersCompensationLiabilityNoncurrent`	$36.05M	USD	Point-in-time
Workers Compensation	`WorkersCompensationLiabilityNoncurrent`	$74.27M	USD	Point-in-time
Workers Compensation	`WorkersCompensationLiabilityNoncurrent`	$74.27M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$20.07M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$20.07M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$20.62M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$20.62M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$49.21M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$49.21M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$158.03M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$158.03M	USD	Point-in-time
Other Noncurrent Liabilities	`OtherLiabilitiesNoncurrent`	$58.56M	USD	Point-in-time
Other Noncurrent Liabilities	`OtherLiabilitiesNoncurrent`	$58.56M	USD	Point-in-time
Other Noncurrent Liabilities	`OtherLiabilitiesNoncurrent`	$108.61M	USD	Point-in-time
Other Noncurrent Liabilities	`OtherLiabilitiesNoncurrent`	$108.61M	USD	Point-in-time
Total Deferred Credits and Other Liabilities	`LiabilitiesOtherThanLongtermDebtNoncurrent`	$697.82M	USD	Point-in-time
Total Deferred Credits and Other Liabilities	`LiabilitiesOtherThanLongtermDebtNoncurrent`	$697.82M	USD	Point-in-time
Total Deferred Credits and Other Liabilities	`LiabilitiesOtherThanLongtermDebtNoncurrent`	$1.31B	USD	Point-in-time
Total Deferred Credits and Other Liabilities	`LiabilitiesOtherThanLongtermDebtNoncurrent`	$1.31B	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$1.31B	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$1.31B	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$2.42B	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$2.42B	USD	Point-in-time
Common Stock, $0.01 Par Value; 125,000,000 Shares Authorized, 51,216,697 Shares Issued and Outstanding at September 30, 2025; 62,500,000 Shares Authorized, 29,407,830 Shares Issued and Outstanding at December 31, 2024	`CommonStockValue`	$294.00K	USD	Point-in-time
Common Stock, $0.01 Par Value; 125,000,000 Shares Authorized, 51,216,697 Shares Issued and Outstanding at September 30, 2025; 62,500,000 Shares Authorized, 29,407,830 Shares Issued and Outstanding at December 31, 2024	`CommonStockValue`	$294.00K	USD	Point-in-time
Common Stock, $0.01 Par Value; 125,000,000 Shares Authorized, 51,216,697 Shares Issued and Outstanding at September 30, 2025; 62,500,000 Shares Authorized, 29,407,830 Shares Issued and Outstanding at December 31, 2024	`CommonStockValue`	$512.00K	USD	Point-in-time
Common Stock, $0.01 Par Value; 125,000,000 Shares Authorized, 51,216,697 Shares Issued and Outstanding at September 30, 2025; 62,500,000 Shares Authorized, 29,407,830 Shares Issued and Outstanding at December 31, 2024	`CommonStockValue`	$512.00K	USD	Point-in-time
Capital in Excess of Par Value	`AdditionalPaidInCapital`	$540.41M	USD	Point-in-time
Capital in Excess of Par Value	`AdditionalPaidInCapital`	$540.41M	USD	Point-in-time
Capital in Excess of Par Value	`AdditionalPaidInCapital`	$2.99B	USD	Point-in-time
Capital in Excess of Par Value	`AdditionalPaidInCapital`	$2.99B	USD	Point-in-time
Retained Earnings	`RetainedEarningsAccumulatedDeficit`	$1.16B	USD	Point-in-time
Retained Earnings	`RetainedEarningsAccumulatedDeficit`	$1.16B	USD	Point-in-time
Retained Earnings	`RetainedEarningsAccumulatedDeficit`	$919.64M	USD	Point-in-time
Retained Earnings	`RetainedEarningsAccumulatedDeficit`	$919.64M	USD	Point-in-time
Accumulated Other Comprehensive Loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-134.57M	USD	Point-in-time
Accumulated Other Comprehensive Loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-134.57M	USD	Point-in-time
Accumulated Other Comprehensive Loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-132.87M	USD	Point-in-time
Accumulated Other Comprehensive Loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-132.87M	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$1.34B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$1.34B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$1.39B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$1.39B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$1.44B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$1.44B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$1.53B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$1.53B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$1.57B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$1.57B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$3.90B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$3.90B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$3.77B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$3.77B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$3.78B	USD	Point-in-time
TOTAL STOCKHOLDERS' EQUITY	`StockholdersEquity`	$3.78B	USD	Point-in-time
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	`LiabilitiesAndStockholdersEquity`	$2.88B	USD	Point-in-time
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	`LiabilitiesAndStockholdersEquity`	$2.88B	USD	Point-in-time
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	`LiabilitiesAndStockholdersEquity`	$6.20B	USD	Point-in-time
TOTAL LIABILITIES AND STOCKHOLDERS' EQUITY	`LiabilitiesAndStockholdersEquity`	$6.20B	USD	Point-in-time

Income Statement 148 line items

Line Item	Tag	Value	Unit	Period
Revenues	`Revenues`	$553.43M	USD	1 Quarter
Revenues	`Revenues`	$553.43M	USD	1 Quarter
Revenues	`Revenues`	$1.59B	USD	3 Qtrs
Revenues	`Revenues`	$1.59B	USD	3 Qtrs
Revenues	`Revenues`	$1.00B	USD	1 Quarter
Revenues	`Revenues`	$1.00B	USD	1 Quarter
Revenues	`Revenues`	$3.12B	USD	3 Qtrs
Revenues	`Revenues`	$3.12B	USD	3 Qtrs
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$354.42M	USD	1 Quarter
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$354.42M	USD	1 Quarter
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$1.05B	USD	3 Qtrs
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$1.05B	USD	3 Qtrs
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$827.47M	USD	1 Quarter
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$827.47M	USD	1 Quarter
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$2.61B	USD	3 Qtrs
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$2.61B	USD	3 Qtrs
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$53.33M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$53.33M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$165.17M	USD	3 Qtrs
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$165.17M	USD	3 Qtrs
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$151.01M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$151.01M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$441.82M	USD	3 Qtrs
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$441.82M	USD	3 Qtrs
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$36.15M	USD	1 Quarter
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$36.15M	USD	1 Quarter
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$77.67M	USD	3 Qtrs
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$77.67M	USD	3 Qtrs
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$34.13M	USD	1 Quarter
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$34.13M	USD	1 Quarter
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$158.28M	USD	3 Qtrs
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$158.28M	USD	3 Qtrs
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$7.68M	USD	1 Quarter
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$7.68M	USD	1 Quarter
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$17.61M	USD	3 Qtrs
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$17.61M	USD	3 Qtrs
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$-1.74M	USD	1 Quarter
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$-1.74M	USD	1 Quarter
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$3.17M	USD	3 Qtrs
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$3.17M	USD	3 Qtrs
Costs and Expenses, Total	`CostsAndExpenses`	$436.21M	USD	1 Quarter
Costs and Expenses, Total	`CostsAndExpenses`	$436.21M	USD	1 Quarter
Costs and Expenses, Total	`CostsAndExpenses`	$1.28B	USD	3 Qtrs
Costs and Expenses, Total	`CostsAndExpenses`	$1.28B	USD	3 Qtrs
Costs and Expenses, Total	`CostsAndExpenses`	$1.01B	USD	1 Quarter
Costs and Expenses, Total	`CostsAndExpenses`	$1.01B	USD	1 Quarter
Costs and Expenses, Total	`CostsAndExpenses`	$3.21B	USD	3 Qtrs
Costs and Expenses, Total	`CostsAndExpenses`	$3.21B	USD	3 Qtrs
(Loss) Income from Operations	`OperatingIncomeLoss`	$117.22M	USD	1 Quarter
(Loss) Income from Operations	`OperatingIncomeLoss`	$117.22M	USD	1 Quarter
(Loss) Income from Operations	`OperatingIncomeLoss`	$313.11M	USD	3 Qtrs
(Loss) Income from Operations	`OperatingIncomeLoss`	$313.11M	USD	3 Qtrs
(Loss) Income from Operations	`OperatingIncomeLoss`	$-11.81M	USD	1 Quarter
(Loss) Income from Operations	`OperatingIncomeLoss`	$-11.81M	USD	1 Quarter
(Loss) Income from Operations	`OperatingIncomeLoss`	$-84.97M	USD	3 Qtrs
(Loss) Income from Operations	`OperatingIncomeLoss`	$-84.97M	USD	3 Qtrs
Interest Expense	`InterestExpenseNonoperating`	$4.66M	USD	1 Quarter
Interest Expense	`InterestExpenseNonoperating`	$4.66M	USD	1 Quarter
Interest Expense	`InterestExpenseNonoperating`	$15.06M	USD	3 Qtrs
Interest Expense	`InterestExpenseNonoperating`	$15.06M	USD	3 Qtrs
Interest Expense	`InterestExpenseNonoperating`	$10.61M	USD	1 Quarter
Interest Expense	`InterestExpenseNonoperating`	$10.61M	USD	1 Quarter
Interest Expense	`InterestExpenseNonoperating`	$28.68M	USD	3 Qtrs
Interest Expense	`InterestExpenseNonoperating`	$28.68M	USD	3 Qtrs
Interest Income	`InvestmentIncomeInterest`	$5.02M	USD	1 Quarter
Interest Income	`InvestmentIncomeInterest`	$5.02M	USD	1 Quarter
Interest Income	`InvestmentIncomeInterest`	$14.14M	USD	3 Qtrs
Interest Income	`InvestmentIncomeInterest`	$14.14M	USD	3 Qtrs
Interest Income	`InvestmentIncomeInterest`	$7.58M	USD	1 Quarter
Interest Income	`InvestmentIncomeInterest`	$7.58M	USD	1 Quarter
Interest Income	`InvestmentIncomeInterest`	$20.30M	USD	3 Qtrs
Interest Income	`InvestmentIncomeInterest`	$20.30M	USD	3 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	3 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	3 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	$-11.68M	USD	3 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	$-11.68M	USD	3 Qtrs
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$4.40M	USD	1 Quarter
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$4.40M	USD	1 Quarter
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$13.20M	USD	3 Qtrs
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$13.20M	USD	3 Qtrs
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$6.56M	USD	1 Quarter
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$6.56M	USD	1 Quarter
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$19.30M	USD	3 Qtrs
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$19.30M	USD	3 Qtrs
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$113.17M	USD	1 Quarter
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$113.17M	USD	1 Quarter
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$298.99M	USD	3 Qtrs
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$298.99M	USD	3 Qtrs
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-21.40M	USD	1 Quarter
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-21.40M	USD	1 Quarter
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-124.33M	USD	3 Qtrs
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-124.33M	USD	3 Qtrs
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$17.54M	USD	1 Quarter
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$17.54M	USD	1 Quarter
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$43.41M	USD	3 Qtrs
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$43.41M	USD	3 Qtrs
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$-53.00M	USD	1 Quarter
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$-53.00M	USD	1 Quarter
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$-50.10M	USD	3 Qtrs
Income Tax (Benefit) Expense	`IncomeTaxExpenseBenefit`	$-50.10M	USD	3 Qtrs
Net Income (Loss)	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$95.63M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$95.63M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$255.58M	USD	3 Qtrs
Net Income (Loss)	`NetIncomeLoss`	$255.58M	USD	3 Qtrs
Net Income (Loss)	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-36.56M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-36.56M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$31.60M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$31.60M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-74.23M	USD	3 Qtrs
Net Income (Loss)	`NetIncomeLoss`	$-74.23M	USD	3 Qtrs
Total Basic Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareBasic`	$3.23	USD	1 Quarter
Total Basic Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareBasic`	$3.23	USD	1 Quarter
Total Basic Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareBasic`	$8.60	USD	3 Qtrs
Total Basic Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareBasic`	$8.60	USD	3 Qtrs
Total Basic Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareBasic`	$0.61	USD	1 Quarter
Total Basic Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareBasic`	$0.61	USD	1 Quarter
Total Basic Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareBasic`	$-1.44	USD	3 Qtrs
Total Basic Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareBasic`	$-1.44	USD	3 Qtrs
Total Diluted Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareDiluted`	$3.22	USD	1 Quarter
Total Diluted Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareDiluted`	$3.22	USD	1 Quarter
Total Diluted Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareDiluted`	$8.57	USD	3 Qtrs
Total Diluted Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareDiluted`	$8.57	USD	3 Qtrs
Total Diluted Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareDiluted`	$0.61	USD	1 Quarter
Total Diluted Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareDiluted`	$0.61	USD	1 Quarter
Total Diluted Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareDiluted`	$-1.44	USD	3 Qtrs
Total Diluted Earnings (Loss) per Share (in dollars per share)	`EarningsPerShareDiluted`	$-1.44	USD	3 Qtrs
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.25	USD	1 Quarter
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.25	USD	1 Quarter
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.25	USD	3 Qtrs
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.25	USD	3 Qtrs
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.30	USD	3 Qtrs
Dividends Declared per Common Share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.30	USD	3 Qtrs

Cash Flow Statement 188 line items

Line Item	Tag	Value	Unit	Period
Net Income (Loss)	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$95.63M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$95.63M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$255.58M	USD	3 Qtrs
Net Income (Loss)	`NetIncomeLoss`	$255.58M	USD	3 Qtrs
Net Income (Loss)	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-36.56M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-36.56M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$31.60M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$31.60M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-74.23M	USD	3 Qtrs
Net Income (Loss)	`NetIncomeLoss`	$-74.23M	USD	3 Qtrs
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$53.33M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$53.33M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$165.17M	USD	3 Qtrs
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$165.17M	USD	3 Qtrs
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$151.01M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$151.01M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$441.82M	USD	3 Qtrs
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$441.82M	USD	3 Qtrs
Gain on Sale of Assets	`GainLossOnDispositionOfAssets1`	$6.96M	USD	3 Qtrs
Gain on Sale of Assets	`GainLossOnDispositionOfAssets1`	$6.96M	USD	3 Qtrs
Gain on Sale of Assets	`GainLossOnDispositionOfAssets1`	$6.16M	USD	3 Qtrs
Gain on Sale of Assets	`GainLossOnDispositionOfAssets1`	$6.16M	USD	3 Qtrs
Stock-Based Compensation	`ShareBasedCompensation`	$9.41M	USD	3 Qtrs
Stock-Based Compensation	`ShareBasedCompensation`	$9.41M	USD	3 Qtrs
Stock-Based Compensation	`ShareBasedCompensation`	$35.94M	USD	3 Qtrs
Stock-Based Compensation	`ShareBasedCompensation`	$35.94M	USD	3 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	3 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	3 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	$-11.68M	USD	3 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	$-11.68M	USD	3 Qtrs
Deferred Income Taxes	`DeferredIncomeTaxExpenseBenefit`	$360.00K	USD	3 Qtrs
Deferred Income Taxes	`DeferredIncomeTaxExpenseBenefit`	$360.00K	USD	3 Qtrs
Deferred Income Taxes	`DeferredIncomeTaxExpenseBenefit`	$-49.65M	USD	3 Qtrs
Deferred Income Taxes	`DeferredIncomeTaxExpenseBenefit`	$-49.65M	USD	3 Qtrs
Loss from Equity Method Investments	`IncomeLossFromEquityMethodInvestments`	$-905.00K	USD	3 Qtrs
Loss from Equity Method Investments	`IncomeLossFromEquityMethodInvestments`	$-905.00K	USD	3 Qtrs
Loss from Equity Method Investments	`IncomeLossFromEquityMethodInvestments`	$-12.84M	USD	3 Qtrs
Loss from Equity Method Investments	`IncomeLossFromEquityMethodInvestments`	$-12.84M	USD	3 Qtrs
Other Adjustments to Net (Loss) Income	`OtherNoncashIncomeExpense`	$276.00K	USD	3 Qtrs
Other Adjustments to Net (Loss) Income	`OtherNoncashIncomeExpense`	$276.00K	USD	3 Qtrs
Other Adjustments to Net (Loss) Income	`OtherNoncashIncomeExpense`	$-3.29M	USD	3 Qtrs
Other Adjustments to Net (Loss) Income	`OtherNoncashIncomeExpense`	$-3.29M	USD	3 Qtrs
Accounts and Notes Receivable	`IncreaseDecreaseInAccountsAndNotesReceivable`	$-15.42M	USD	3 Qtrs
Accounts and Notes Receivable	`IncreaseDecreaseInAccountsAndNotesReceivable`	$-15.42M	USD	3 Qtrs
Accounts and Notes Receivable	`IncreaseDecreaseInAccountsAndNotesReceivable`	$35.77M	USD	3 Qtrs
Accounts and Notes Receivable	`IncreaseDecreaseInAccountsAndNotesReceivable`	$35.77M	USD	3 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$28.46M	USD	3 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$28.46M	USD	3 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$4.09M	USD	3 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$4.09M	USD	3 Qtrs
Other Current Assets	`IncreaseDecreaseInOtherCurrentAssets`	$-1.84M	USD	3 Qtrs
Other Current Assets	`IncreaseDecreaseInOtherCurrentAssets`	$-1.84M	USD	3 Qtrs
Other Current Assets	`IncreaseDecreaseInOtherCurrentAssets`	$24.36M	USD	3 Qtrs
Other Current Assets	`IncreaseDecreaseInOtherCurrentAssets`	$24.36M	USD	3 Qtrs
Changes in Other Assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$1.48M	USD	3 Qtrs
Changes in Other Assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$1.48M	USD	3 Qtrs
Changes in Other Assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$-26.77M	USD	3 Qtrs
Changes in Other Assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$-26.77M	USD	3 Qtrs
Accounts Payable	`IncreaseDecreaseInAccountsPayable`	$4.30M	USD	3 Qtrs
Accounts Payable	`IncreaseDecreaseInAccountsPayable`	$4.30M	USD	3 Qtrs
Accounts Payable	`IncreaseDecreaseInAccountsPayable`	$-63.46M	USD	3 Qtrs
Accounts Payable	`IncreaseDecreaseInAccountsPayable`	$-63.46M	USD	3 Qtrs
Other Operating Liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-8.89M	USD	3 Qtrs
Other Operating Liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-8.89M	USD	3 Qtrs
Other Operating Liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-14.06M	USD	3 Qtrs
Other Operating Liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-14.06M	USD	3 Qtrs
Payments on Asset Retirement Obligations	`IncreaseDecreaseInAssetRetirementObligations`	$-21.38M	USD	3 Qtrs
Payments on Asset Retirement Obligations	`IncreaseDecreaseInAssetRetirementObligations`	$-21.38M	USD	3 Qtrs
Payments on Asset Retirement Obligations	`IncreaseDecreaseInAssetRetirementObligations`	$-25.09M	USD	3 Qtrs
Payments on Asset Retirement Obligations	`IncreaseDecreaseInAssetRetirementObligations`	$-25.09M	USD	3 Qtrs
Changes in Other Liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-30.47M	USD	3 Qtrs
Changes in Other Liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-30.47M	USD	3 Qtrs
Changes in Other Liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-37.03M	USD	3 Qtrs
Changes in Other Liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-37.03M	USD	3 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$355.08M	USD	3 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$355.08M	USD	3 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$198.44M	USD	3 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$198.44M	USD	3 Qtrs
Capital Expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$137.15M	USD	3 Qtrs
Capital Expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$137.15M	USD	3 Qtrs
Capital Expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$203.30M	USD	3 Qtrs
Capital Expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$203.30M	USD	3 Qtrs
Proceeds from Sales of Assets	`ProceedsFromSaleOfProductiveAssets`	$7.32M	USD	3 Qtrs
Proceeds from Sales of Assets	`ProceedsFromSaleOfProductiveAssets`	$7.32M	USD	3 Qtrs
Proceeds from Sales of Assets	`ProceedsFromSaleOfProductiveAssets`	$6.51M	USD	3 Qtrs
Proceeds from Sales of Assets	`ProceedsFromSaleOfProductiveAssets`	$6.51M	USD	3 Qtrs
Proceeds from Sales of Short-Term Investments	`ProceedsFromSaleOfShortTermInvestments`	$44.08M	USD	3 Qtrs
Proceeds from Sales of Short-Term Investments	`ProceedsFromSaleOfShortTermInvestments`	$44.08M	USD	3 Qtrs
Proceeds from Sales of Short-Term Investments	`ProceedsFromSaleOfShortTermInvestments`	$80.17M	USD	3 Qtrs
Proceeds from Sales of Short-Term Investments	`ProceedsFromSaleOfShortTermInvestments`	$80.17M	USD	3 Qtrs
Purchases of Short-Term Investments	`PaymentsToAcquireShortTermInvestments`	$43.27M	USD	3 Qtrs
Purchases of Short-Term Investments	`PaymentsToAcquireShortTermInvestments`	$43.27M	USD	3 Qtrs
Purchases of Short-Term Investments	`PaymentsToAcquireShortTermInvestments`	$4.80M	USD	3 Qtrs
Purchases of Short-Term Investments	`PaymentsToAcquireShortTermInvestments`	$4.80M	USD	3 Qtrs
Net Cash and Restricted Cash Acquired from Merger	`CashAcquiredFromAcquisition`	-	USD	3 Qtrs
Net Cash and Restricted Cash Acquired from Merger	`CashAcquiredFromAcquisition`	-	USD	3 Qtrs
Net Cash and Restricted Cash Acquired from Merger	`CashAcquiredFromAcquisition`	$368.73M	USD	3 Qtrs
Net Cash and Restricted Cash Acquired from Merger	`CashAcquiredFromAcquisition`	$368.73M	USD	3 Qtrs
Purchase of Arch Tax-Exempt Bonds	`PaymentsToAcquireOtherInvestments`	-	USD	3 Qtrs
Purchase of Arch Tax-Exempt Bonds	`PaymentsToAcquireOtherInvestments`	-	USD	3 Qtrs
Purchase of Arch Tax-Exempt Bonds	`PaymentsToAcquireOtherInvestments`	$98.22M	USD	3 Qtrs
Purchase of Arch Tax-Exempt Bonds	`PaymentsToAcquireOtherInvestments`	$98.22M	USD	3 Qtrs
Investments in DTA	`PaymentsToAcquireProjects`	-	USD	3 Qtrs
Investments in DTA	`PaymentsToAcquireProjects`	-	USD	3 Qtrs
Investments in DTA	`PaymentsToAcquireProjects`	$10.64M	USD	3 Qtrs
Investments in DTA	`PaymentsToAcquireProjects`	$10.64M	USD	3 Qtrs
Other Investing Activity	`PaymentsForProceedsFromOtherInvestingActivities`	$5.68M	USD	3 Qtrs
Other Investing Activity	`PaymentsForProceedsFromOtherInvestingActivities`	$5.68M	USD	3 Qtrs
Other Investing Activity	`PaymentsForProceedsFromOtherInvestingActivities`	$6.83M	USD	3 Qtrs
Other Investing Activity	`PaymentsForProceedsFromOtherInvestingActivities`	$6.83M	USD	3 Qtrs
Net Cash Provided by (Used in) Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-134.70M	USD	3 Qtrs
Net Cash Provided by (Used in) Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-134.70M	USD	3 Qtrs
Net Cash Provided by (Used in) Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$131.60M	USD	3 Qtrs
Net Cash Provided by (Used in) Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$131.60M	USD	3 Qtrs
Payments on Finance Lease Obligations	`FinanceLeasePrincipalPayments`	$8.26M	USD	3 Qtrs
Payments on Finance Lease Obligations	`FinanceLeasePrincipalPayments`	$8.26M	USD	3 Qtrs
Payments on Finance Lease Obligations	`FinanceLeasePrincipalPayments`	$8.91M	USD	3 Qtrs
Payments on Finance Lease Obligations	`FinanceLeasePrincipalPayments`	$8.91M	USD	3 Qtrs
Proceeds from Long-Term Debt	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	3 Qtrs
Proceeds from Long-Term Debt	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	3 Qtrs
Proceeds from Long-Term Debt	`ProceedsFromIssuanceOfLongTermDebt`	$114.44M	USD	3 Qtrs
Proceeds from Long-Term Debt	`ProceedsFromIssuanceOfLongTermDebt`	$114.44M	USD	3 Qtrs
Payments on Other Debt	`RepaymentsOfOtherDebt`	$905.00K	USD	3 Qtrs
Payments on Other Debt	`RepaymentsOfOtherDebt`	$905.00K	USD	3 Qtrs
Payments on Other Debt	`RepaymentsOfOtherDebt`	$12.41M	USD	3 Qtrs
Payments on Other Debt	`RepaymentsOfOtherDebt`	$12.41M	USD	3 Qtrs
Shares Withheld for Taxes	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.54M	USD	3 Qtrs
Shares Withheld for Taxes	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.54M	USD	3 Qtrs
Shares Withheld for Taxes	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.07M	USD	3 Qtrs
Shares Withheld for Taxes	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.07M	USD	3 Qtrs
Repurchases of Common Stock	`PaymentsForRepurchaseOfCommonStock`	$70.88M	USD	3 Qtrs
Repurchases of Common Stock	`PaymentsForRepurchaseOfCommonStock`	$70.88M	USD	3 Qtrs
Repurchases of Common Stock	`PaymentsForRepurchaseOfCommonStock`	$202.59M	USD	3 Qtrs
Repurchases of Common Stock	`PaymentsForRepurchaseOfCommonStock`	$202.59M	USD	3 Qtrs
Debt-Related Financing Fees	`PaymentsOfFinancingCosts`	-	USD	3 Qtrs
Debt-Related Financing Fees	`PaymentsOfFinancingCosts`	-	USD	3 Qtrs
Debt-Related Financing Fees	`PaymentsOfFinancingCosts`	$20.48M	USD	3 Qtrs
Debt-Related Financing Fees	`PaymentsOfFinancingCosts`	$20.48M	USD	3 Qtrs
Payments of Excise Tax on Share Repurchases	`PaymentsOfExciseTaxOnShareRepurchases`	-	USD	3 Qtrs
Payments of Excise Tax on Share Repurchases	`PaymentsOfExciseTaxOnShareRepurchases`	-	USD	3 Qtrs
Payments of Excise Tax on Share Repurchases	`PaymentsOfExciseTaxOnShareRepurchases`	$934.00K	USD	3 Qtrs
Payments of Excise Tax on Share Repurchases	`PaymentsOfExciseTaxOnShareRepurchases`	$934.00K	USD	3 Qtrs
Dividends and Dividend Equivalents Paid	`PaymentsOfDividends`	$8.45M	USD	3 Qtrs
Dividends and Dividend Equivalents Paid	`PaymentsOfDividends`	$8.45M	USD	3 Qtrs
Dividends and Dividend Equivalents Paid	`PaymentsOfDividends`	$21.05M	USD	3 Qtrs
Dividends and Dividend Equivalents Paid	`PaymentsOfDividends`	$21.05M	USD	3 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-94.03M	USD	3 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-94.03M	USD	3 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-166.00M	USD	3 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-166.00M	USD	3 Qtrs
Net Increase in Cash and Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$126.35M	USD	3 Qtrs
Net Increase in Cash and Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$126.35M	USD	3 Qtrs
Net Increase in Cash and Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$164.04M	USD	3 Qtrs
Net Increase in Cash and Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$164.04M	USD	3 Qtrs
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$243.27M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$243.27M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$369.62M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$369.62M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$447.54M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$447.54M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$611.58M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$611.58M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$243.27M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$243.27M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$369.62M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$369.62M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$447.54M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$447.54M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$611.58M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$611.58M	USD	Point-in-time
Equipment Financing	`CapitalExpendituresIncurredButNotYetPaid`	$3.25M	USD	3 Qtrs
Equipment Financing	`CapitalExpendituresIncurredButNotYetPaid`	$3.25M	USD	3 Qtrs
Equipment Financing	`CapitalExpendituresIncurredButNotYetPaid`	$91.64M	USD	3 Qtrs
Equipment Financing	`CapitalExpendituresIncurredButNotYetPaid`	$91.64M	USD	3 Qtrs
Equity Issued as Consideration for Merger	`EquityIssuedAsConsiderationForMerger`	-	USD	3 Qtrs
Equity Issued as Consideration for Merger	`EquityIssuedAsConsiderationForMerger`	-	USD	3 Qtrs
Equity Issued as Consideration for Merger	`EquityIssuedAsConsiderationForMerger`	$2.48B	USD	3 Qtrs
Equity Issued as Consideration for Merger	`EquityIssuedAsConsiderationForMerger`	$2.48B	USD	3 Qtrs

Stockholders Equity 216 line items

Line Item	Tag	Value	Unit	Period
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-111.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-111.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-110.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-110.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-111.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-111.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-332.00K	USD	3 Qtrs
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-332.00K	USD	3 Qtrs
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-327.00K	USD	3 Qtrs
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-327.00K	USD	3 Qtrs
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$36.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$36.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$5.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$5.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-69.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-69.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-28.00K	USD	3 Qtrs
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-28.00K	USD	3 Qtrs
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$72.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$72.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-119.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-119.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-117.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-117.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-164.00K	USD	3 Qtrs
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-164.00K	USD	3 Qtrs
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	615,288.00	shares	1 Quarter
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	615,288.00	shares	1 Quarter
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	132,063.00	shares	1 Quarter
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	132,063.00	shares	1 Quarter
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	747,351.00	shares	3 Qtrs
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	747,351.00	shares	3 Qtrs
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	1.38M	shares	1 Quarter
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	1.38M	shares	1 Quarter
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	1.18M	shares	1 Quarter
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	1.18M	shares	1 Quarter
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	270,834.00	shares	1 Quarter
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	270,834.00	shares	1 Quarter
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	2.82M	shares	3 Qtrs
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	2.82M	shares	3 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.25	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.25	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.25	USD	3 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.25	USD	3 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.10	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.30	USD	3 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.30	USD	3 Qtrs
Beginning balance	`StockholdersEquity`	$1.34B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.34B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.39B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.39B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.44B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.44B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.53B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.53B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.57B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.57B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$3.90B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$3.90B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$3.77B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$3.77B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$3.78B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$3.78B	USD	Point-in-time
Net (Loss) Income	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$95.63M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$95.63M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$255.58M	USD	3 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$255.58M	USD	3 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$-36.56M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$-36.56M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$31.60M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$31.60M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$-74.23M	USD	3 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$-74.23M	USD	3 Qtrs
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.16M	USD	3 Qtrs
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.16M	USD	3 Qtrs
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.13M	USD	3 Qtrs
Actuarially Determined Long-Term Liability Adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.13M	USD	3 Qtrs
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-126.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-126.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-17.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-17.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$238.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$238.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$95.00K	USD	3 Qtrs
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$95.00K	USD	3 Qtrs
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-301.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-301.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$464.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$464.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$406.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$406.00K	USD	1 Quarter
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$569.00K	USD	3 Qtrs
Investments in Available-for-Sale Securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$569.00K	USD	3 Qtrs
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$102.15M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$102.15M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$58.43M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$58.43M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$96.25M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$96.25M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$256.83M	USD	3 Qtrs
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$256.83M	USD	3 Qtrs
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-69.20M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-69.20M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-35.71M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-35.71M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$32.38M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$32.38M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-72.53M	USD	3 Qtrs
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-72.53M	USD	3 Qtrs
Issuance of Common Stock	`StockIssuedDuringPeriodValueNewIssues`	-	USD	1 Quarter
Issuance of Common Stock	`StockIssuedDuringPeriodValueNewIssues`	-	USD	1 Quarter
Issuance of Common Stock	`StockIssuedDuringPeriodValueNewIssues`	-	USD	1 Quarter
Issuance of Common Stock	`StockIssuedDuringPeriodValueNewIssues`	-	USD	1 Quarter
Issuance of Common Stock	`StockIssuedDuringPeriodValueNewIssues`	-	USD	1 Quarter
Issuance of Common Stock	`StockIssuedDuringPeriodValueNewIssues`	-	USD	1 Quarter
Merger with Arch	`StockIssuedDuringPeriodValueAcquisitions`	$2.48B	USD	1 Quarter
Merger with Arch	`StockIssuedDuringPeriodValueAcquisitions`	$2.48B	USD	1 Quarter
Repurchases of Common Stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$55.88M	USD	1 Quarter
Repurchases of Common Stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$55.88M	USD	1 Quarter
Repurchases of Common Stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$11.00M	USD	1 Quarter
Repurchases of Common Stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$11.00M	USD	1 Quarter
Repurchases of Common Stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$101.26M	USD	1 Quarter
Repurchases of Common Stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$101.26M	USD	1 Quarter
Repurchases of Common Stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$81.89M	USD	1 Quarter
Repurchases of Common Stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$81.89M	USD	1 Quarter
Repurchases of Common Stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$19.44M	USD	1 Quarter
Repurchases of Common Stock	`StockRepurchasedAndRetiredDuringPeriodValue`	$19.44M	USD	1 Quarter
Excise Tax on Repurchases of Common Stock	`StockRepurchasedDuringPeriodExciseTaxes`	$471.00K	USD	1 Quarter
Excise Tax on Repurchases of Common Stock	`StockRepurchasedDuringPeriodExciseTaxes`	$471.00K	USD	1 Quarter
Excise Tax on Repurchases of Common Stock	`StockRepurchasedDuringPeriodExciseTaxes`	$82.00K	USD	1 Quarter
Excise Tax on Repurchases of Common Stock	`StockRepurchasedDuringPeriodExciseTaxes`	$82.00K	USD	1 Quarter
Excise Tax on Repurchases of Common Stock	`StockRepurchasedDuringPeriodExciseTaxes`	$-2.00K	USD	1 Quarter
Excise Tax on Repurchases of Common Stock	`StockRepurchasedDuringPeriodExciseTaxes`	$-2.00K	USD	1 Quarter
Excise Tax on Repurchases of Common Stock	`StockRepurchasedDuringPeriodExciseTaxes`	$1.25M	USD	1 Quarter
Excise Tax on Repurchases of Common Stock	`StockRepurchasedDuringPeriodExciseTaxes`	$1.25M	USD	1 Quarter
Excise Tax on Repurchases of Common Stock	`StockRepurchasedDuringPeriodExciseTaxes`	$523.00K	USD	1 Quarter
Excise Tax on Repurchases of Common Stock	`StockRepurchasedDuringPeriodExciseTaxes`	$523.00K	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$5.13M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$5.13M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$2.26M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$2.26M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$2.25M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$2.25M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$36.09M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$36.09M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$-4.07M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$-4.07M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$3.92M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$3.92M	USD	1 Quarter
Shares Withheld for Taxes	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.55M	USD	1 Quarter
Shares Withheld for Taxes	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.55M	USD	1 Quarter
Shares Withheld for Taxes	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$27.00K	USD	1 Quarter
Shares Withheld for Taxes	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$27.00K	USD	1 Quarter
Shares Withheld for Taxes	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.07M	USD	1 Quarter
Shares Withheld for Taxes	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.07M	USD	1 Quarter
Shares Withheld for Taxes	`ShareBasedPaymentArrangementDecreaseForTaxWithholdingObligationNet`	$-38.00K	USD	1 Quarter
Shares Withheld for Taxes	`ShareBasedPaymentArrangementDecreaseForTaxWithholdingObligationNet`	$-38.00K	USD	1 Quarter
Dividends on Common Shares	`DividendsCommonStock`	$7.35M	USD	1 Quarter
Dividends on Common Shares	`DividendsCommonStock`	$7.35M	USD	1 Quarter
Dividends on Common Shares	`DividendsCommonStock`	$5.36M	USD	1 Quarter
Dividends on Common Shares	`DividendsCommonStock`	$5.36M	USD	1 Quarter
Dividends on Common Shares	`DividendsCommonStock`	$5.22M	USD	1 Quarter
Dividends on Common Shares	`DividendsCommonStock`	$5.22M	USD	1 Quarter
Dividends on Common Shares	`DividendsCommonStock`	$5.13M	USD	1 Quarter
Dividends on Common Shares	`DividendsCommonStock`	$5.13M	USD	1 Quarter
Dividend Equivalents Earned on Stock-Based Compensation Awards	`DividendsShareBasedCompensation`	$107.00K	USD	1 Quarter
Dividend Equivalents Earned on Stock-Based Compensation Awards	`DividendsShareBasedCompensation`	$107.00K	USD	1 Quarter
Dividend Equivalents Earned on Stock-Based Compensation Awards	`DividendsShareBasedCompensation`	$44.00K	USD	1 Quarter
Dividend Equivalents Earned on Stock-Based Compensation Awards	`DividendsShareBasedCompensation`	$44.00K	USD	1 Quarter
Dividend Equivalents Earned on Stock-Based Compensation Awards	`DividendsShareBasedCompensation`	$46.00K	USD	1 Quarter
Dividend Equivalents Earned on Stock-Based Compensation Awards	`DividendsShareBasedCompensation`	$46.00K	USD	1 Quarter
Ending balance	`StockholdersEquity`	$1.34B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.34B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.39B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.39B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.44B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.44B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.53B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.53B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.57B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.57B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$3.90B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$3.90B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$3.77B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$3.77B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$3.78B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$3.78B	USD	Point-in-time

Comprehensive Income 104 line items

Line Item	Tag	Value	Unit	Period
Net Income (Loss)	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$95.63M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$95.63M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$255.58M	USD	3 Qtrs
Net Income (Loss)	`NetIncomeLoss`	$255.58M	USD	3 Qtrs
Net Income (Loss)	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-36.56M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-36.56M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$31.60M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$31.60M	USD	1 Quarter
Net Income (Loss)	`NetIncomeLoss`	$-74.23M	USD	3 Qtrs
Net Income (Loss)	`NetIncomeLoss`	$-74.23M	USD	3 Qtrs
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-111.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-111.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-110.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-110.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-111.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-111.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-332.00K	USD	3 Qtrs
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-332.00K	USD	3 Qtrs
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-327.00K	USD	3 Qtrs
Actuarially determined long-term liability adjustment, net of tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-327.00K	USD	3 Qtrs
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$36.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$36.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$5.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$5.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-69.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-69.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-28.00K	USD	3 Qtrs
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-28.00K	USD	3 Qtrs
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$72.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$72.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-119.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-119.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-117.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-117.00K	USD	1 Quarter
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-164.00K	USD	3 Qtrs
Unrealized gain on investments in available-for-sale securities, net of tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-164.00K	USD	3 Qtrs
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.16M	USD	3 Qtrs
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.16M	USD	3 Qtrs
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.13M	USD	3 Qtrs
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($111), ($327), ($332))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-1.13M	USD	3 Qtrs
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-126.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-126.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-17.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-17.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$238.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$238.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$95.00K	USD	3 Qtrs
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$95.00K	USD	3 Qtrs
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-301.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-301.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$464.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$464.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$406.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$406.00K	USD	1 Quarter
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$569.00K	USD	3 Qtrs
Unrealized Gain on Investments in Available-for-Sale Securities (Net of tax: ($117), ($69), ($164), ($28))	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$569.00K	USD	3 Qtrs
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$623.00K	USD	1 Quarter
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$623.00K	USD	1 Quarter
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$1.25M	USD	3 Qtrs
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$1.25M	USD	3 Qtrs
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$784.00K	USD	1 Quarter
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$784.00K	USD	1 Quarter
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$1.70M	USD	3 Qtrs
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$1.70M	USD	3 Qtrs
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$102.15M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$102.15M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$58.43M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$58.43M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$96.25M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$96.25M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$256.83M	USD	3 Qtrs
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$256.83M	USD	3 Qtrs
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-69.20M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-69.20M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-35.71M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-35.71M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$32.38M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$32.38M	USD	1 Quarter
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-72.53M	USD	3 Qtrs
Comprehensive Income (Loss)	`ComprehensiveIncomeNetOfTax`	$-72.53M	USD	3 Qtrs

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