10-Q Filing

CORE NATURAL RESOURCES, INC. CIK: 1710366 Q2 2025

Filing Information

Form Type	10-Q
Accession Number	`0001710366-25-000017`
Period End Date	20250630
Filing Date	20250805
Fiscal Year	2025
Fiscal Period	Q2
XBRL Instance	ceix-20250630_htm.xml

Filing Contents

This filing contains the following financial statements:

Balance Sheet 168 Income Statement 142 Cash Flow Statement 184 Stockholders Equity 158 Comprehensive Income 76

Balance Sheet 168 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
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
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`	$216.12M	USD	Point-in-time
Cash and Cash Equivalents	`CashAndCashEquivalentsAtCarryingValue`	$216.12M	USD	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	51.48M	shares	Point-in-time
Common stock, shares issued (in shares)	`CommonStockSharesIssued`	51.48M	shares	Point-in-time
Cash and Cash Equivalents	`CashAndCashEquivalentsAtCarryingValue`	$413.18M	USD	Point-in-time
Cash and Cash Equivalents	`CashAndCashEquivalentsAtCarryingValue`	$413.18M	USD	Point-in-time
Short-Term Investments	`DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent`	-	USD	Point-in-time
Short-Term Investments	`DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent`	-	USD	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
Short-Term Investments	`DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent`	$51.99M	USD	Point-in-time
Short-Term Investments	`DebtSecuritiesAvailableForSaleExcludingAccruedInterestCurrent`	$51.99M	USD	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	51.48M	shares	Point-in-time
Common stock, shares outstanding (in shares)	`CommonStockSharesOutstanding`	51.48M	shares	Point-in-time
Trade Receivables, net	`AccountsReceivableNetCurrent`	$311.31M	USD	Point-in-time
Trade Receivables, net	`AccountsReceivableNetCurrent`	$311.31M	USD	Point-in-time
Trade Receivables, net	`AccountsReceivableNetCurrent`	$136.75M	USD	Point-in-time
Trade Receivables, net	`AccountsReceivableNetCurrent`	$136.75M	USD	Point-in-time
Other Receivables, net	`OtherReceivablesNetCurrent`	$26.48M	USD	Point-in-time
Other Receivables, net	`OtherReceivablesNetCurrent`	$26.48M	USD	Point-in-time
Other Receivables, net	`OtherReceivablesNetCurrent`	$25.90M	USD	Point-in-time
Other Receivables, net	`OtherReceivablesNetCurrent`	$25.90M	USD	Point-in-time
Inventories	`InventoryNet`	$96.20M	USD	Point-in-time
Inventories	`InventoryNet`	$96.20M	USD	Point-in-time
Inventories	`InventoryNet`	$377.07M	USD	Point-in-time
Inventories	`InventoryNet`	$377.07M	USD	Point-in-time
Other Current Assets	`OtherAssetsCurrent`	$144.03M	USD	Point-in-time
Other Current Assets	`OtherAssetsCurrent`	$144.03M	USD	Point-in-time
Other Current Assets	`OtherAssetsCurrent`	$66.87M	USD	Point-in-time
Other Current Assets	`OtherAssetsCurrent`	$66.87M	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`	$1.27B	USD	Point-in-time
Total Current Assets	`AssetsCurrent`	$1.27B	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`	$4.47B	USD	Point-in-time
Total Property, Plant and EquipmentNet	`PropertyPlantAndEquipmentNet`	$4.47B	USD	Point-in-time
Funds for Asset Retirement Obligations	`FundsForAssetRetirementObligations`	$165.49M	USD	Point-in-time
Funds for Asset Retirement Obligations	`FundsForAssetRetirementObligations`	$165.49M	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
Salary Retirement	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$44.41M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$44.41M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$41.94M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent`	$41.94M	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`	$251.81M	USD	Point-in-time
Other Noncurrent Assets, net	`OtherAssetsMiscellaneousNoncurrent`	$251.81M	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`	$461.71M	USD	Point-in-time
Total Other Assets	`OtherAssetsNoncurrent`	$461.71M	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`	$2.71B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$2.71B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$6.21B	USD	Point-in-time
TOTAL ASSETS	`Assets`	$6.21B	USD	Point-in-time
Accounts Payable	`AccountsPayableCurrent`	$270.82M	USD	Point-in-time
Accounts Payable	`AccountsPayableCurrent`	$270.82M	USD	Point-in-time
Accounts Payable	`AccountsPayableCurrent`	$143.63M	USD	Point-in-time
Accounts Payable	`AccountsPayableCurrent`	$143.63M	USD	Point-in-time
Current Portion of Long-Term Debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$57.34M	USD	Point-in-time
Current Portion of Long-Term Debt	`LongTermDebtAndCapitalLeaseObligationsCurrent`	$57.34M	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
Other Accrued Liabilities	`AccruedLiabilitiesCurrent`	$262.18M	USD	Point-in-time
Other Accrued Liabilities	`AccruedLiabilitiesCurrent`	$262.18M	USD	Point-in-time
Other Accrued Liabilities	`AccruedLiabilitiesCurrent`	$385.62M	USD	Point-in-time
Other Accrued Liabilities	`AccruedLiabilitiesCurrent`	$385.62M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$713.78M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$713.78M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$518.68M	USD	Point-in-time
Total Current Liabilities	`LiabilitiesCurrent`	$518.68M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$313.23M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$313.23M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$79.52M	USD	Point-in-time
Long-Term Debt	`LongTermDebtNoncurrent`	$79.52M	USD	Point-in-time
Finance Lease Obligations	`FinanceLeaseLiabilityNoncurrent`	$20.75M	USD	Point-in-time
Finance Lease Obligations	`FinanceLeaseLiabilityNoncurrent`	$20.75M	USD	Point-in-time
Finance Lease Obligations	`FinanceLeaseLiabilityNoncurrent`	$15.27M	USD	Point-in-time
Finance Lease Obligations	`FinanceLeaseLiabilityNoncurrent`	$15.27M	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`	$333.98M	USD	Point-in-time
Total Long-Term Debt	`LongTermDebtAndCapitalLeaseObligations`	$333.98M	USD	Point-in-time
Postretirement Benefits Other Than Pensions	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$212.14M	USD	Point-in-time
Postretirement Benefits Other Than Pensions	`OtherPostretirementDefinedBenefitPlanLiabilitiesNoncurrent`	$212.14M	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
Pneumoconiosis Benefits	`EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent`	$251.66M	USD	Point-in-time
Pneumoconiosis Benefits	`EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent`	$251.66M	USD	Point-in-time
Pneumoconiosis Benefits	`EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent`	$145.49M	USD	Point-in-time
Pneumoconiosis Benefits	`EmployeeRelatedLiabilitiesMedicalAndDisabilityBenefitsNoncurrent`	$145.49M	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`	$492.36M	USD	Point-in-time
Asset Retirement Obligations	`AssetRetirementObligationsNoncurrent`	$492.36M	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`	$73.83M	USD	Point-in-time
Workers Compensation	`WorkersCompensationLiabilityNoncurrent`	$73.83M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$20.69M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$20.69M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$20.07M	USD	Point-in-time
Salary Retirement	`DefinedBenefitPensionPlanLiabilitiesNoncurrent`	$20.07M	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`	$218.52M	USD	Point-in-time
Deferred Income Taxes	`DeferredIncomeTaxLiabilitiesNet`	$218.52M	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`	$124.18M	USD	Point-in-time
Other Noncurrent Liabilities	`OtherLiabilitiesNoncurrent`	$124.18M	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`	$1.39B	USD	Point-in-time
Total Deferred Credits and Other Liabilities	`LiabilitiesOtherThanLongtermDebtNoncurrent`	$1.39B	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`	$2.44B	USD	Point-in-time
TOTAL LIABILITIES	`Liabilities`	$2.44B	USD	Point-in-time
Common Stock, $0.01 Par Value; 125,000,000 Shares Authorized, 51,484,171 Shares Issued and Outstanding at June 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, 51,484,171 Shares Issued and Outstanding at June 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, 51,484,171 Shares Issued and Outstanding at June 30, 2025; 62,500,000 Shares Authorized, 29,407,830 Shares Issued and Outstanding at December 31, 2024	`CommonStockValue`	$515.00K	USD	Point-in-time
Common Stock, $0.01 Par Value; 125,000,000 Shares Authorized, 51,484,171 Shares Issued and Outstanding at June 30, 2025; 62,500,000 Shares Authorized, 29,407,830 Shares Issued and Outstanding at December 31, 2024	`CommonStockValue`	$515.00K	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
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
Retained Earnings	`RetainedEarningsAccumulatedDeficit`	$1.16B	USD	Point-in-time
Retained Earnings	`RetainedEarningsAccumulatedDeficit`	$1.16B	USD	Point-in-time
Retained Earnings	`RetainedEarningsAccumulatedDeficit`	$908.12M	USD	Point-in-time
Retained Earnings	`RetainedEarningsAccumulatedDeficit`	$908.12M	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`	$-133.65M	USD	Point-in-time
Accumulated Other Comprehensive Loss	`AccumulatedOtherComprehensiveIncomeLossNetOfTax`	$-133.65M	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$1.39B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$1.39B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$1.44B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$1.44B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$1.57B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$1.57B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$3.77B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$3.77B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$3.90B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$3.90B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$1.34B	USD	Point-in-time
TOTAL EQUITY	`StockholdersEquity`	$1.34B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$2.88B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$2.88B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$6.21B	USD	Point-in-time
TOTAL LIABILITIES AND EQUITY	`LiabilitiesAndStockholdersEquity`	$6.21B	USD	Point-in-time

Income Statement 142 line items

Line Item	Tag	Value	Unit	Period
Revenues	`Revenues`	$2.12B	USD	2 Qtrs
Revenues	`Revenues`	$2.12B	USD	2 Qtrs
Revenues	`Revenues`	$1.04B	USD	2 Qtrs
Revenues	`Revenues`	$1.04B	USD	2 Qtrs
Revenues	`Revenues`	$490.72M	USD	1 Quarter
Revenues	`Revenues`	$490.72M	USD	1 Quarter
Revenues	`Revenues`	$1.10B	USD	1 Quarter
Revenues	`Revenues`	$1.10B	USD	1 Quarter
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$344.04M	USD	1 Quarter
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$344.04M	USD	1 Quarter
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$1.78B	USD	2 Qtrs
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$1.78B	USD	2 Qtrs
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$698.08M	USD	2 Qtrs
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$698.08M	USD	2 Qtrs
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$912.57M	USD	1 Quarter
Cost of Sales (exclusive of items shown separately below)	`CostOfGoodsAndServiceExcludingDepreciationDepletionAndAmortization`	$912.57M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$169.26M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$169.26M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$54.85M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$54.85M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$111.84M	USD	2 Qtrs
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$111.84M	USD	2 Qtrs
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$290.82M	USD	2 Qtrs
Depreciation, Depletion and Amortization	`DepreciationAndAmortization`	$290.82M	USD	2 Qtrs
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$20.89M	USD	1 Quarter
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$20.89M	USD	1 Quarter
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$34.83M	USD	1 Quarter
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$34.83M	USD	1 Quarter
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$124.15M	USD	2 Qtrs
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$124.15M	USD	2 Qtrs
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$41.52M	USD	2 Qtrs
General and Administrative Costs	`GeneralAndAdministrativeExpense`	$41.52M	USD	2 Qtrs
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$-4.95M	USD	1 Quarter
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$-4.95M	USD	1 Quarter
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$4.91M	USD	2 Qtrs
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$4.91M	USD	2 Qtrs
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$9.92M	USD	2 Qtrs
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$9.92M	USD	2 Qtrs
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$903.00K	USD	1 Quarter
Other Operating Expense (Income), net	`OtherOperatingIncomeExpenseNet`	$903.00K	USD	1 Quarter
Costs and Expenses, Total	`CostsAndExpenses`	$841.52M	USD	2 Qtrs
Costs and Expenses, Total	`CostsAndExpenses`	$841.52M	USD	2 Qtrs
Costs and Expenses, Total	`CostsAndExpenses`	$418.87M	USD	1 Quarter
Costs and Expenses, Total	`CostsAndExpenses`	$418.87M	USD	1 Quarter
Costs and Expenses, Total	`CostsAndExpenses`	$1.12B	USD	1 Quarter
Costs and Expenses, Total	`CostsAndExpenses`	$1.12B	USD	1 Quarter
Costs and Expenses, Total	`CostsAndExpenses`	$2.19B	USD	2 Qtrs
Costs and Expenses, Total	`CostsAndExpenses`	$2.19B	USD	2 Qtrs
(Loss) Income from Operations	`OperatingIncomeLoss`	$-19.25M	USD	1 Quarter
(Loss) Income from Operations	`OperatingIncomeLoss`	$-19.25M	USD	1 Quarter
(Loss) Income from Operations	`OperatingIncomeLoss`	$195.89M	USD	2 Qtrs
(Loss) Income from Operations	`OperatingIncomeLoss`	$195.89M	USD	2 Qtrs
(Loss) Income from Operations	`OperatingIncomeLoss`	$71.85M	USD	1 Quarter
(Loss) Income from Operations	`OperatingIncomeLoss`	$71.85M	USD	1 Quarter
(Loss) Income from Operations	`OperatingIncomeLoss`	$-73.16M	USD	2 Qtrs
(Loss) Income from Operations	`OperatingIncomeLoss`	$-73.16M	USD	2 Qtrs
Interest Expense	`InterestExpenseNonoperating`	$18.07M	USD	2 Qtrs
Interest Expense	`InterestExpenseNonoperating`	$18.07M	USD	2 Qtrs
Interest Expense	`InterestExpenseNonoperating`	$4.99M	USD	1 Quarter
Interest Expense	`InterestExpenseNonoperating`	$4.99M	USD	1 Quarter
Interest Expense	`InterestExpenseNonoperating`	$10.40M	USD	2 Qtrs
Interest Expense	`InterestExpenseNonoperating`	$10.40M	USD	2 Qtrs
Interest Expense	`InterestExpenseNonoperating`	$10.05M	USD	1 Quarter
Interest Expense	`InterestExpenseNonoperating`	$10.05M	USD	1 Quarter
Interest Income	`InvestmentIncomeInterest`	$9.13M	USD	2 Qtrs
Interest Income	`InvestmentIncomeInterest`	$9.13M	USD	2 Qtrs
Interest Income	`InvestmentIncomeInterest`	$4.63M	USD	1 Quarter
Interest Income	`InvestmentIncomeInterest`	$4.63M	USD	1 Quarter
Interest Income	`InvestmentIncomeInterest`	$6.40M	USD	1 Quarter
Interest Income	`InvestmentIncomeInterest`	$6.40M	USD	1 Quarter
Interest Income	`InvestmentIncomeInterest`	$12.72M	USD	2 Qtrs
Interest Income	`InvestmentIncomeInterest`	$12.72M	USD	2 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	2 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	$-11.68M	USD	2 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	2 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	2 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$8.80M	USD	2 Qtrs
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$8.80M	USD	2 Qtrs
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$6.54M	USD	1 Quarter
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$6.54M	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`	$4.40M	USD	1 Quarter
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$12.74M	USD	2 Qtrs
Non-Service Related Pension and Postretirement Benefit Costs	`PensionAndOtherPostretirementBenefitExpense`	$12.74M	USD	2 Qtrs
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$185.82M	USD	2 Qtrs
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$185.82M	USD	2 Qtrs
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$67.09M	USD	1 Quarter
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$67.09M	USD	1 Quarter
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-102.93M	USD	2 Qtrs
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-102.93M	USD	2 Qtrs
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-29.44M	USD	1 Quarter
(Loss) Earnings Before Income Tax	`IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest`	$-29.44M	USD	1 Quarter
Income Tax Expense	`IncomeTaxExpenseBenefit`	$7.12M	USD	1 Quarter
Income Tax Expense	`IncomeTaxExpenseBenefit`	$7.12M	USD	1 Quarter
Income Tax Expense	`IncomeTaxExpenseBenefit`	$9.03M	USD	1 Quarter
Income Tax Expense	`IncomeTaxExpenseBenefit`	$9.03M	USD	1 Quarter
Income Tax Expense	`IncomeTaxExpenseBenefit`	$25.87M	USD	2 Qtrs
Income Tax Expense	`IncomeTaxExpenseBenefit`	$25.87M	USD	2 Qtrs
Income Tax Expense	`IncomeTaxExpenseBenefit`	$2.90M	USD	2 Qtrs
Income Tax Expense	`IncomeTaxExpenseBenefit`	$2.90M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$159.95M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$159.95M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$101.89M	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`	$-105.83M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$-105.83M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Total Basic (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareBasic`	$1.96	USD	1 Quarter
Total Basic (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareBasic`	$1.96	USD	1 Quarter
Total Basic (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareBasic`	$5.37	USD	2 Qtrs
Total Basic (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareBasic`	$5.37	USD	2 Qtrs
Total Basic (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareBasic`	$-0.70	USD	1 Quarter
Total Basic (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareBasic`	$-0.70	USD	1 Quarter
Total Basic (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareBasic`	$-2.06	USD	2 Qtrs
Total Basic (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareBasic`	$-2.06	USD	2 Qtrs
Total Dilutive (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareDiluted`	$5.35	USD	2 Qtrs
Total Dilutive (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareDiluted`	$5.35	USD	2 Qtrs
Total Dilutive (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareDiluted`	$-0.70	USD	1 Quarter
Total Dilutive (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareDiluted`	$-0.70	USD	1 Quarter
Total Dilutive (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareDiluted`	$1.96	USD	1 Quarter
Total Dilutive (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareDiluted`	$1.96	USD	1 Quarter
Total Dilutive (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareDiluted`	$-2.06	USD	2 Qtrs
Total Dilutive (Loss) Earnings per Share (in dollars per share)	`EarningsPerShareDiluted`	$-2.06	USD	2 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	-	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	-	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`	-	USD	2 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	-	USD	2 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`	$0.20	USD	2 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.20	USD	2 Qtrs

Cash Flow Statement 184 line items

Line Item	Tag	Value	Unit	Period
Net (Loss) Income	`NetIncomeLoss`	$159.95M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$159.95M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$101.89M	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`	$-105.83M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$-105.83M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$54.85M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$54.85M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$169.26M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$169.26M	USD	1 Quarter
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$111.84M	USD	2 Qtrs
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$111.84M	USD	2 Qtrs
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$290.82M	USD	2 Qtrs
Depreciation, Depletion and Amortization	`DepreciationDepletionAndAmortization`	$290.82M	USD	2 Qtrs
Gain on Sale of Assets	`GainLossOnDispositionOfAssets1`	$6.78M	USD	2 Qtrs
Gain on Sale of Assets	`GainLossOnDispositionOfAssets1`	$6.78M	USD	2 Qtrs
Gain on Sale of Assets	`GainLossOnDispositionOfAssets1`	$5.97M	USD	2 Qtrs
Gain on Sale of Assets	`GainLossOnDispositionOfAssets1`	$5.97M	USD	2 Qtrs
Stock-Based Compensation	`ShareBasedCompensation`	$7.36M	USD	2 Qtrs
Stock-Based Compensation	`ShareBasedCompensation`	$7.36M	USD	2 Qtrs
Stock-Based Compensation	`ShareBasedCompensation`	$32.03M	USD	2 Qtrs
Stock-Based Compensation	`ShareBasedCompensation`	$32.03M	USD	2 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	2 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	$-11.68M	USD	2 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	2 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	2 Qtrs
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Loss on Debt Extinguishment	`GainsLossesOnExtinguishmentOfDebt`	-	USD	1 Quarter
Deferred Income Taxes	`DeferredIncomeTaxExpenseBenefit`	$3.14M	USD	2 Qtrs
Deferred Income Taxes	`DeferredIncomeTaxExpenseBenefit`	$3.14M	USD	2 Qtrs
Deferred Income Taxes	`DeferredIncomeTaxExpenseBenefit`	$180.00K	USD	2 Qtrs
Deferred Income Taxes	`DeferredIncomeTaxExpenseBenefit`	$180.00K	USD	2 Qtrs
Loss from Equity Method Investments	`IncomeLossFromEquityMethodInvestments`	$-8.03M	USD	2 Qtrs
Loss from Equity Method Investments	`IncomeLossFromEquityMethodInvestments`	$-8.03M	USD	2 Qtrs
Loss from Equity Method Investments	`IncomeLossFromEquityMethodInvestments`	$-534.00K	USD	2 Qtrs
Loss from Equity Method Investments	`IncomeLossFromEquityMethodInvestments`	$-534.00K	USD	2 Qtrs
Other Adjustments to Net (Loss) Income	`OtherNoncashIncomeExpense`	$177.00K	USD	2 Qtrs
Other Adjustments to Net (Loss) Income	`OtherNoncashIncomeExpense`	$177.00K	USD	2 Qtrs
Other Adjustments to Net (Loss) Income	`OtherNoncashIncomeExpense`	$-1.92M	USD	2 Qtrs
Other Adjustments to Net (Loss) Income	`OtherNoncashIncomeExpense`	$-1.92M	USD	2 Qtrs
Accounts and Notes Receivable	`IncreaseDecreaseInAccountsAndNotesReceivable`	$-809.00K	USD	2 Qtrs
Accounts and Notes Receivable	`IncreaseDecreaseInAccountsAndNotesReceivable`	$-809.00K	USD	2 Qtrs
Accounts and Notes Receivable	`IncreaseDecreaseInAccountsAndNotesReceivable`	$4.25M	USD	2 Qtrs
Accounts and Notes Receivable	`IncreaseDecreaseInAccountsAndNotesReceivable`	$4.25M	USD	2 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$-26.32M	USD	2 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$-26.32M	USD	2 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$9.35M	USD	2 Qtrs
Inventories	`IncreaseDecreaseInInventories`	$9.35M	USD	2 Qtrs
Other Current Assets	`IncreaseDecreaseInOtherCurrentAssets`	$-3.32M	USD	2 Qtrs
Other Current Assets	`IncreaseDecreaseInOtherCurrentAssets`	$-3.32M	USD	2 Qtrs
Other Current Assets	`IncreaseDecreaseInOtherCurrentAssets`	$18.36M	USD	2 Qtrs
Other Current Assets	`IncreaseDecreaseInOtherCurrentAssets`	$18.36M	USD	2 Qtrs
Changes in Other Assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$2.07M	USD	2 Qtrs
Changes in Other Assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$2.07M	USD	2 Qtrs
Changes in Other Assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$-22.65M	USD	2 Qtrs
Changes in Other Assets	`IncreaseDecreaseInOtherNoncurrentAssets`	$-22.65M	USD	2 Qtrs
Accounts Payable	`IncreaseDecreaseInAccountsPayable`	$-78.41M	USD	2 Qtrs
Accounts Payable	`IncreaseDecreaseInAccountsPayable`	$-78.41M	USD	2 Qtrs
Accounts Payable	`IncreaseDecreaseInAccountsPayable`	$426.00K	USD	2 Qtrs
Accounts Payable	`IncreaseDecreaseInAccountsPayable`	$426.00K	USD	2 Qtrs
Other Operating Liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-25.63M	USD	2 Qtrs
Other Operating Liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-25.63M	USD	2 Qtrs
Other Operating Liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-37.80M	USD	2 Qtrs
Other Operating Liabilities	`IncreaseDecreaseInOtherCurrentLiabilities`	$-37.80M	USD	2 Qtrs
Payments on Asset Retirement Obligations	`IncreaseDecreaseInAssetRetirementObligations`	$-14.81M	USD	2 Qtrs
Payments on Asset Retirement Obligations	`IncreaseDecreaseInAssetRetirementObligations`	$-14.81M	USD	2 Qtrs
Payments on Asset Retirement Obligations	`IncreaseDecreaseInAssetRetirementObligations`	$-11.93M	USD	2 Qtrs
Payments on Asset Retirement Obligations	`IncreaseDecreaseInAssetRetirementObligations`	$-11.93M	USD	2 Qtrs
Changes in Other Liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-32.80M	USD	2 Qtrs
Changes in Other Liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-32.80M	USD	2 Qtrs
Changes in Other Liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-22.56M	USD	2 Qtrs
Changes in Other Liabilities	`IncreaseDecreaseInOtherNoncurrentLiabilities`	$-22.56M	USD	2 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$193.75M	USD	2 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$193.75M	USD	2 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$110.52M	USD	2 Qtrs
Net Cash Provided by Operating Activities	`NetCashProvidedByUsedInOperatingActivities`	$110.52M	USD	2 Qtrs
Capital Expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$154.01M	USD	2 Qtrs
Capital Expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$154.01M	USD	2 Qtrs
Capital Expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$97.76M	USD	2 Qtrs
Capital Expenditures	`PaymentsToAcquirePropertyPlantAndEquipment`	$97.76M	USD	2 Qtrs
Proceeds from Sales of Assets	`ProceedsFromSaleOfProductiveAssets`	$6.95M	USD	2 Qtrs
Proceeds from Sales of Assets	`ProceedsFromSaleOfProductiveAssets`	$6.95M	USD	2 Qtrs
Proceeds from Sales of Assets	`ProceedsFromSaleOfProductiveAssets`	$6.22M	USD	2 Qtrs
Proceeds from Sales of Assets	`ProceedsFromSaleOfProductiveAssets`	$6.22M	USD	2 Qtrs
Proceeds from Sales of Short-Term Investments	`ProceedsFromSaleOfShortTermInvestments`	$20.54M	USD	2 Qtrs
Proceeds from Sales of Short-Term Investments	`ProceedsFromSaleOfShortTermInvestments`	$20.54M	USD	2 Qtrs
Proceeds from Sales of Short-Term Investments	`ProceedsFromSaleOfShortTermInvestments`	$80.17M	USD	2 Qtrs
Proceeds from Sales of Short-Term Investments	`ProceedsFromSaleOfShortTermInvestments`	$80.17M	USD	2 Qtrs
Purchases of Short-Term Investments	`PaymentsToAcquireShortTermInvestments`	$20.08M	USD	2 Qtrs
Purchases of Short-Term Investments	`PaymentsToAcquireShortTermInvestments`	$20.08M	USD	2 Qtrs
Purchases of Short-Term Investments	`PaymentsToAcquireShortTermInvestments`	$4.80M	USD	2 Qtrs
Purchases of Short-Term Investments	`PaymentsToAcquireShortTermInvestments`	$4.80M	USD	2 Qtrs
Net Cash and Restricted Cash Acquired from Merger	`CashAcquiredFromAcquisition`	-	USD	2 Qtrs
Net Cash and Restricted Cash Acquired from Merger	`CashAcquiredFromAcquisition`	-	USD	2 Qtrs
Net Cash and Restricted Cash Acquired from Merger	`CashAcquiredFromAcquisition`	$368.73M	USD	2 Qtrs
Net Cash and Restricted Cash Acquired from Merger	`CashAcquiredFromAcquisition`	$368.73M	USD	2 Qtrs
Purchase of Arch Tax-Exempt Bonds	`PaymentsToAcquireOtherInvestments`	$98.22M	USD	2 Qtrs
Purchase of Arch Tax-Exempt Bonds	`PaymentsToAcquireOtherInvestments`	$98.22M	USD	2 Qtrs
Purchase of Arch Tax-Exempt Bonds	`PaymentsToAcquireOtherInvestments`	-	USD	2 Qtrs
Purchase of Arch Tax-Exempt Bonds	`PaymentsToAcquireOtherInvestments`	-	USD	2 Qtrs
Investments in DTA	`PaymentsToAcquireProjects`	-	USD	2 Qtrs
Investments in DTA	`PaymentsToAcquireProjects`	-	USD	2 Qtrs
Investments in DTA	`PaymentsToAcquireProjects`	$10.64M	USD	2 Qtrs
Investments in DTA	`PaymentsToAcquireProjects`	$10.64M	USD	2 Qtrs
Other Investing Activity	`PaymentsForProceedsFromOtherInvestingActivities`	$5.15M	USD	2 Qtrs
Other Investing Activity	`PaymentsForProceedsFromOtherInvestingActivities`	$5.15M	USD	2 Qtrs
Other Investing Activity	`PaymentsForProceedsFromOtherInvestingActivities`	$4.65M	USD	2 Qtrs
Other Investing Activity	`PaymentsForProceedsFromOtherInvestingActivities`	$4.65M	USD	2 Qtrs
Net Cash Provided by (Used in) Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-95.50M	USD	2 Qtrs
Net Cash Provided by (Used in) Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$-95.50M	USD	2 Qtrs
Net Cash Provided by (Used in) Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$182.79M	USD	2 Qtrs
Net Cash Provided by (Used in) Investing Activities	`NetCashProvidedByUsedInInvestingActivities`	$182.79M	USD	2 Qtrs
Payments on Finance Lease Obligations	`FinanceLeasePrincipalPayments`	$6.42M	USD	2 Qtrs
Payments on Finance Lease Obligations	`FinanceLeasePrincipalPayments`	$6.42M	USD	2 Qtrs
Payments on Finance Lease Obligations	`FinanceLeasePrincipalPayments`	$5.63M	USD	2 Qtrs
Payments on Finance Lease Obligations	`FinanceLeasePrincipalPayments`	$5.63M	USD	2 Qtrs
Proceeds from Long-Term Debt	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	2 Qtrs
Proceeds from Long-Term Debt	`ProceedsFromIssuanceOfLongTermDebt`	-	USD	2 Qtrs
Proceeds from Long-Term Debt	`ProceedsFromIssuanceOfLongTermDebt`	$114.44M	USD	2 Qtrs
Proceeds from Long-Term Debt	`ProceedsFromIssuanceOfLongTermDebt`	$114.44M	USD	2 Qtrs
Payments on Other Debt	`RepaymentsOfOtherDebt`	$11.22M	USD	2 Qtrs
Payments on Other Debt	`RepaymentsOfOtherDebt`	$11.22M	USD	2 Qtrs
Payments on Other Debt	`RepaymentsOfOtherDebt`	$710.00K	USD	2 Qtrs
Payments on Other Debt	`RepaymentsOfOtherDebt`	$710.00K	USD	2 Qtrs
Shares Withheld for Taxes	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.07M	USD	2 Qtrs
Shares Withheld for Taxes	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.07M	USD	2 Qtrs
Shares Withheld for Taxes	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.58M	USD	2 Qtrs
Shares Withheld for Taxes	`PaymentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.58M	USD	2 Qtrs
Repurchases of Common Stock	`PaymentsForRepurchaseOfCommonStock`	$70.88M	USD	2 Qtrs
Repurchases of Common Stock	`PaymentsForRepurchaseOfCommonStock`	$70.88M	USD	2 Qtrs
Repurchases of Common Stock	`PaymentsForRepurchaseOfCommonStock`	$183.15M	USD	2 Qtrs
Repurchases of Common Stock	`PaymentsForRepurchaseOfCommonStock`	$183.15M	USD	2 Qtrs
Debt-Related Financing Fees	`PaymentsOfFinancingCosts`	-	USD	2 Qtrs
Debt-Related Financing Fees	`PaymentsOfFinancingCosts`	-	USD	2 Qtrs
Debt-Related Financing Fees	`PaymentsOfFinancingCosts`	$17.47M	USD	2 Qtrs
Debt-Related Financing Fees	`PaymentsOfFinancingCosts`	$17.47M	USD	2 Qtrs
Payments of Excise Tax on Share Repurchases	`PaymentsOfExciseTaxOnShareRepurchases`	-	USD	2 Qtrs
Payments of Excise Tax on Share Repurchases	`PaymentsOfExciseTaxOnShareRepurchases`	-	USD	2 Qtrs
Payments of Excise Tax on Share Repurchases	`PaymentsOfExciseTaxOnShareRepurchases`	$934.00K	USD	2 Qtrs
Payments of Excise Tax on Share Repurchases	`PaymentsOfExciseTaxOnShareRepurchases`	$934.00K	USD	2 Qtrs
Dividends and Dividend Equivalents Paid	`PaymentsOfDividends`	$1.10M	USD	2 Qtrs
Dividends and Dividend Equivalents Paid	`PaymentsOfDividends`	$1.10M	USD	2 Qtrs
Dividends and Dividend Equivalents Paid	`PaymentsOfDividends`	$15.92M	USD	2 Qtrs
Dividends and Dividend Equivalents Paid	`PaymentsOfDividends`	$15.92M	USD	2 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-84.69M	USD	2 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-84.69M	USD	2 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-133.95M	USD	2 Qtrs
Net Cash Used in Financing Activities	`NetCashProvidedByUsedInFinancingActivities`	$-133.95M	USD	2 Qtrs
Net Increase in Cash and Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$159.36M	USD	2 Qtrs
Net Increase in Cash and Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$159.36M	USD	2 Qtrs
Net Increase in Cash and Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$13.56M	USD	2 Qtrs
Net Increase in Cash and Cash Equivalents and Restricted Cash	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseIncludingExchangeRateEffect`	$13.56M	USD	2 Qtrs
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$256.83M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$256.83M	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`	$606.90M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at Beginning of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$606.90M	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`	$243.27M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$256.83M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$256.83M	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`	$606.90M	USD	Point-in-time
Cash and Cash Equivalents and Restricted Cash at End of Period	`CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents`	$606.90M	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
Equipment Financing	`CapitalExpendituresIncurredButNotYetPaid`	$364.00K	USD	2 Qtrs
Equipment Financing	`CapitalExpendituresIncurredButNotYetPaid`	$364.00K	USD	2 Qtrs
Equipment Financing	`CapitalExpendituresIncurredButNotYetPaid`	$66.15M	USD	2 Qtrs
Equipment Financing	`CapitalExpendituresIncurredButNotYetPaid`	$66.15M	USD	2 Qtrs
Equity Issued as Consideration for Merger	`EquityIssuedAsConsiderationForMerger`	$2.48B	USD	2 Qtrs
Equity Issued as Consideration for Merger	`EquityIssuedAsConsiderationForMerger`	$2.48B	USD	2 Qtrs
Equity Issued as Consideration for Merger	`EquityIssuedAsConsiderationForMerger`	-	USD	2 Qtrs
Equity Issued as Consideration for Merger	`EquityIssuedAsConsiderationForMerger`	-	USD	2 Qtrs

Stockholders Equity 158 line items

Line Item	Tag	Value	Unit	Period
Actuarially determined long-term liability adjustments, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-110.00K	USD	1 Quarter
Actuarially determined long-term liability adjustments, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-110.00K	USD	1 Quarter
Actuarially determined long-term liability adjustments, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustments, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustments, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustments, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustments, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-111.00K	USD	1 Quarter
Actuarially determined long-term liability adjustments, tax	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax`	$-111.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$36.00K	USD	1 Quarter
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$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`	$41.00K	USD	2 Qtrs
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$41.00K	USD	2 Qtrs
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`	$-47.00K	USD	2 Qtrs
Investments in available-for-sale securities, tax	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-47.00K	USD	2 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
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	2.55M	shares	2 Qtrs
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	2.55M	shares	2 Qtrs
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`	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`	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`	747,351.00	shares	2 Qtrs
Repurchases of common stock (in shares)	`StockRepurchasedAndRetiredDuringPeriodShares`	747,351.00	shares	2 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	-	USD	1 Quarter
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	-	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`	-	USD	2 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	-	USD	2 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`	$0.20	USD	2 Qtrs
Dividends declared per common share (in dollars per share)	`CommonStockDividendsPerShareDeclared`	$0.20	USD	2 Qtrs
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`	$1.57B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.57B	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`	$3.90B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$3.90B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.34B	USD	Point-in-time
Beginning balance	`StockholdersEquity`	$1.34B	USD	Point-in-time
Net (Loss) Income	`NetIncomeLoss`	$159.95M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$159.95M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$101.89M	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`	$-105.83M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$-105.83M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$-69.28M	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`	$-385.00K	USD	1 Quarter
Actuarially determined long-term liability adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially determined long-term liability adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-770.00K	USD	2 Qtrs
Actuarially determined long-term liability adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-770.00K	USD	2 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`	$-385.00K	USD	1 Quarter
Actuarially determined long-term liability adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially determined long-term liability adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-756.00K	USD	2 Qtrs
Actuarially determined long-term liability adjustments	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-756.00K	USD	2 Qtrs
Investments in available-for-sale securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-143.00K	USD	2 Qtrs
Investments in available-for-sale securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-143.00K	USD	2 Qtrs
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`	$163.00K	USD	2 Qtrs
Investments in available-for-sale securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$163.00K	USD	2 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`	$464.00K	USD	1 Quarter
Investments in available-for-sale securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$464.00K	USD	1 Quarter
Investments in available-for-sale securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-301.00K	USD	1 Quarter
Investments in available-for-sale securities	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-301.00K	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$102.15M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$102.15M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-69.20M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-69.20M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-35.71M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-35.71M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$58.43M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$58.43M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$160.58M	USD	2 Qtrs
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$160.58M	USD	2 Qtrs
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-104.91M	USD	2 Qtrs
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-104.91M	USD	2 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`	$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`	$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
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`	$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`	$471.00K	USD	1 Quarter
Excise Tax on Repurchases of Common Stock	`StockRepurchasedDuringPeriodExciseTaxes`	$471.00K	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`	$36.09M	USD	1 Quarter
Employee Stock-Based Compensation	`AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue`	$36.09M	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
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`	$5.55M	USD	1 Quarter
Shares Withheld for Taxes	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$5.55M	USD	1 Quarter
Shares Withheld for Taxes	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.07M	USD	1 Quarter
Shares Withheld for Taxes	`AdjustmentsRelatedToTaxWithholdingForShareBasedCompensation`	$14.07M	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`	$5.36M	USD	1 Quarter
Dividends on common shares	`DividendsCommonStock`	$5.36M	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
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
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`	$1.57B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.57B	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`	$3.90B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$3.90B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.34B	USD	Point-in-time
Ending balance	`StockholdersEquity`	$1.34B	USD	Point-in-time

Comprehensive Income 76 line items

Line Item	Tag	Value	Unit	Period
Actuarially determined long-term liability adjustment, tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-110.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-110.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-218.00K	USD	2 Qtrs
Actuarially determined long-term liability adjustment, tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-218.00K	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$159.95M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$159.95M	USD	2 Qtrs
Actuarially determined long-term liability adjustment, tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-221.00K	USD	2 Qtrs
Actuarially determined long-term liability adjustment, tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-221.00K	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$58.06M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$101.89M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$-36.56M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$-36.56M	USD	1 Quarter
Actuarially determined long-term liability adjustment, tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Actuarially determined long-term liability adjustment, tax	`OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax`	$-109.00K	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$-105.83M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$-105.83M	USD	2 Qtrs
Net (Loss) Income	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Net (Loss) Income	`NetIncomeLoss`	$-69.28M	USD	1 Quarter
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$36.00K	USD	1 Quarter
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$36.00K	USD	1 Quarter
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$5.00K	USD	1 Quarter
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$5.00K	USD	1 Quarter
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$41.00K	USD	2 Qtrs
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$41.00K	USD	2 Qtrs
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-119.00K	USD	1 Quarter
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-119.00K	USD	1 Quarter
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-47.00K	USD	2 Qtrs
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$-47.00K	USD	2 Qtrs
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$72.00K	USD	1 Quarter
Unrealized loss on investments in available-for-sale securities, net	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesTax`	$72.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-770.00K	USD	2 Qtrs
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-770.00K	USD	2 Qtrs
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-378.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-385.00K	USD	1 Quarter
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-756.00K	USD	2 Qtrs
Actuarially Determined Long-Term Liability Adjustments (Net of tax: ($109), ($110), ($218), ($221))	`OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax`	$-756.00K	USD	2 Qtrs
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-143.00K	USD	2 Qtrs
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-143.00K	USD	2 Qtrs
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-17.00K	USD	1 Quarter
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-17.00K	USD	1 Quarter
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$163.00K	USD	2 Qtrs
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$163.00K	USD	2 Qtrs
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-126.00K	USD	1 Quarter
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-126.00K	USD	1 Quarter
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$464.00K	USD	1 Quarter
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$464.00K	USD	1 Quarter
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-301.00K	USD	1 Quarter
Unrealized Gain (Loss) on Investments in Available-for-Sale Securities (Net of tax: ($119), $5, ($47), $41)	`OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax`	$-301.00K	USD	1 Quarter
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$919.00K	USD	2 Qtrs
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$919.00K	USD	2 Qtrs
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$627.00K	USD	2 Qtrs
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$627.00K	USD	2 Qtrs
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$368.00K	USD	1 Quarter
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$368.00K	USD	1 Quarter
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$842.00K	USD	1 Quarter
Other Comprehensive Income	`OtherComprehensiveIncomeLossNetOfTax`	$842.00K	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$102.15M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$102.15M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-69.20M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-69.20M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-35.71M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-35.71M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$58.43M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$58.43M	USD	1 Quarter
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$160.58M	USD	2 Qtrs
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$160.58M	USD	2 Qtrs
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-104.91M	USD	2 Qtrs
Comprehensive (Loss) Income	`ComprehensiveIncomeNetOfTax`	$-104.91M	USD	2 Qtrs

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