$CTRA
Coterra Energy Inc. Stock $ctra

$ctra Overview Financials Valuation SEC Filings Company Website

2018 Q4 Form 10-K Financial Statement

#000085847019000008 Filed on February 26, 2019

Income Statement

Concept	2018 Q4	2018	2017 Q4
Revenue	$572.1M	$2.188B	$352.6M
YoY Change	62.25%	24.03%	-20.59%
Cost Of Revenue	$456.3M	$750.6M	$293.7M
YoY Change	55.36%	25.3%	-10.46%
Gross Profit	$115.8M	$1.438B	$58.90M
YoY Change	96.6%	23.37%	-49.22%
Gross Profit Margin	20.24%	65.7%	16.7%
Selling, General & Admin	$15.78M	$119.3M	$11.40M
YoY Change	38.43%	-9.13%	18.75%
% of Gross Profit	13.63%	8.3%	19.35%
Research & Development		$113.8M
YoY Change		428.76%
% of Gross Profit		7.92%
Depreciation & Amortization	$43.60M	$417.5M	$25.50M
YoY Change	70.97%	-26.61%	-57.14%
% of Gross Profit	37.65%	29.04%	43.29%
Operating Expenses	$34.74M	$1.401B	$40.90M
YoY Change	-15.07%	-22.31%	-41.99%
Operating Profit	$81.06M	$771.8M	$18.00M
YoY Change	350.36%	-610.25%	-60.44%
Interest Expense	-$14.41M	-$72.06M	-$9.000M
YoY Change	60.08%	-60.54%	-70.3%
% of Operating Profit	-17.77%	-9.34%	-50.0%
Other Income/Expense, Net	-$517.0K	-$463.0K	$500.0K
YoY Change	-203.4%	-109.34%
Pretax Income	-$9.595M	$698.1M	$39.20M
YoY Change	-124.48%	-405.62%	17.01%
Income Tax	-$165.5M	$141.1M	-$75.40M
% Of Pretax Income		20.21%	-192.35%
Net Earnings	$156.5M	$557.0M	$96.60M
YoY Change	62.05%	454.86%	176.79%
Net Earnings / Revenue	27.36%	25.46%	27.4%
Basic Earnings Per Share		$1.25
Diluted Earnings Per Share	$5.161M	$1.24	$3.188M
COMMON SHARES
Basic Shares Outstanding	431.2M shares	445.5M shares	462.5M shares
Diluted Shares Outstanding		447.6M shares

Balance Sheet

Concept	2018 Q4	2018	2017 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$233.6M	$2.287M	$141.9M
YoY Change	64.62%	-99.52%
Cash & Equivalents	$2.287M	$2.287M	$480.0M
Short-Term Investments
Other Short-Term Assets	$1.863M	$59.53M	$2.794M
YoY Change	-33.32%	1305.95%	3.79%
Inventory	$11.08M	$11.08M	$8.006M
Prepaid Expenses
Receivables	$292.6M	$361.8M	$127.3M
Other Receivables	$0.00	$109.8M	$21.80M
Total Short-Term Assets	$544.5M	$544.5M	$765.0M
YoY Change	-28.81%	-28.81%	6.86%
LONG-TERM ASSETS
Property, Plant & Equipment	$3.464B	$3.464B	$3.072B
YoY Change	12.74%	12.74%	-27.71%
Goodwill
YoY Change
Intangibles
YoY Change
Long-Term Investments	$163.2M	$163.2M	$86.08M
YoY Change	89.58%	89.58%	-33.54%
Other Assets	$27.50M	$19.33M	$23.01M
YoY Change	19.49%	-97.6%	-14.89%
Total Long-Term Assets	$3.654B	$3.654B	$3.962B
YoY Change	-7.78%	-7.78%	-10.08%
TOTAL ASSETS
Total Short-Term Assets	$544.5M	$544.5M	$765.0M
Total Long-Term Assets	$3.654B	$3.654B	$3.962B
Total Assets	$4.199B	$4.199B	$4.727B
YoY Change	-11.18%	-11.18%	-7.72%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$241.9M	$30.03M	$238.0M
YoY Change	1.64%	284.3%	41.35%
Accrued Expenses	$25.23M	$158.9M	$27.44M
YoY Change	-8.07%	2.93%	27.68%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$0.00	$0.00	$304.0M
YoY Change	-100.0%	-100.0%
Total Short-Term Liabilities	$287.3M	$287.3M	$630.1M
YoY Change	-54.41%	-54.41%	144.38%
LONG-TERM LIABILITIES
Long-Term Debt	$1.226B	$1.226B	$1.218B
YoY Change	0.67%	0.67%	-19.9%
Other Long-Term Liabilities	$60.17M	$138.7M	$39.72M
YoY Change	51.48%	7.97%	36.41%
Total Long-Term Liabilities	$1.286B	$1.365B	$1.258B
YoY Change	2.28%	1.37%	-18.85%
TOTAL LIABILITIES
Total Short-Term Liabilities	$287.3M	$287.3M	$630.1M
Total Long-Term Liabilities	$1.286B	$1.365B	$1.258B
Total Liabilities	$2.111B	$2.111B	$2.203B
YoY Change	-4.21%	-4.21%	-13.76%
SHAREHOLDERS EQUITY
Retained Earnings	$1.608B		$1.162B
YoY Change	38.3%		5.8%
Common Stock	$1.811B		$1.790B
YoY Change	1.16%		0.85%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$1.335B		$430.6M
YoY Change	209.98%		40.33%
Treasury Stock Shares	53.41M shares		14.94M shares
Shareholders Equity	$2.088B	$2.088B	$2.524B
YoY Change
Total Liabilities & Shareholders Equity	$4.199B	$4.199B	$4.727B
YoY Change	-11.18%	-11.18%	-7.72%

Cashflow Statement

Concept	2018 Q4	2018	2017 Q4
OPERATING ACTIVITIES
Net Income	$156.5M	$557.0M	$96.60M
YoY Change	62.05%	454.86%	176.79%
Depreciation, Depletion And Amortization	$43.60M	$417.5M	$25.50M
YoY Change	70.97%	-26.61%	-57.14%
Cash From Operating Activities	-$17.94M	$1.105B	$45.70M
YoY Change	-139.25%	23.02%	25.55%
INVESTING ACTIVITIES
Capital Expenditures	-$25.16M	-$894.5M	-$26.70M
YoY Change	-5.77%	16.99%	23.04%
Acquisitions
YoY Change
Other Investing Activities	$198.9M	$601.1M	-$22.80M
YoY Change	-972.34%	929.17%	4460.0%
Cash From Investing Activities	$173.7M	-$293.4M	-$49.50M
YoY Change	-450.98%	-58.45%	121.97%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net		$0.00
YoY Change
Debt Paid & Issued, Net		$455.0M
YoY Change
Cash From Financing Activities	37.58M	-$1.289B	-41.70M
YoY Change	-190.12%	512.48%	-199.76%
NET CHANGE
Cash From Operating Activities	-17.94M	$1.105B	45.70M
Cash From Investing Activities	173.7M	-$293.4M	-49.50M
Cash From Financing Activities	37.58M	-$1.289B	-41.70M
Net Change In Cash	193.4M	-$477.8M	-45.50M
YoY Change	-525.02%	2483.18%	-181.4%
FREE CASH FLOW
Cash From Operating Activities	-$17.94M	$1.105B	$45.70M
Capital Expenditures	-$25.16M	-$894.5M	-$26.70M
Free Cash Flow	$7.224M	$1.999B	$72.40M
YoY Change	-90.02%	20.25%	24.61%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2017Q4	cog	Accrued Asset Retirement Obligations AccruedAssetRetirementObligations	4952000	USD
CY2018Q4	cog	Accrued Asset Retirement Obligations AccruedAssetRetirementObligations	1000000	USD
CY2017Q4	cog	Accrued Capital Expenditures AccruedCapitalExpenditures	31130000	USD
CY2018Q4	cog	Accrued Capital Expenditures AccruedCapitalExpenditures	43207000	USD
CY2017Q4	cog	Accrued Transportation Costs AccruedTransportationCosts	51433000	USD
CY2018Q4	cog	Accrued Transportation Costs AccruedTransportationCosts	50540000	USD
CY2016	cog	Adjustmentsto Additional Paidin Capital Issuanceof Stock Heldin Trust Value AdjustmentstoAdditionalPaidinCapitalIssuanceofStockHeldinTrustValue	544000	USD
CY2016	cog	Amortization Of Unproved Properties AmortizationOfUnprovedProperties	25000000	USD
CY2017	cog	Amortization Of Unproved Properties AmortizationOfUnprovedProperties	52800000	USD
CY2018	cog	Amortization Of Unproved Properties AmortizationOfUnprovedProperties	82300000	USD
CY2016	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-121000	USD
CY2016	cog	Amount Recognized In Net Periodic Cost And Other Comprehensive Income AmountRecognizedInNetPeriodicCostAndOtherComprehensiveIncome	1790000	USD
CY2017	cog	Amount Recognized In Net Periodic Cost And Other Comprehensive Income AmountRecognizedInNetPeriodicCostAndOtherComprehensiveIncome	-5227000	USD
CY2018	cog	Amount Recognized In Net Periodic Cost And Other Comprehensive Income AmountRecognizedInNetPeriodicCostAndOtherComprehensiveIncome	-217000	USD
CY2018	cog	Asset Retirement Obligation Liabilities Divested AssetRetirementObligationLiabilitiesDivested	3809000	USD
CY2018	cog	Asset Retirement Obligations Transfers AssetRetirementObligationsTransfers	220000	USD
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CY2018Q4	cog	Cumulative Treasury Stock Shares Acquired CumulativeTreasuryStockSharesAcquired	73400000	shares
CY2018Q4	cog	Cumulative Treasury Stock Shares Retired CumulativeTreasuryStockSharesRetired	20000000	shares
CY2017Q4	cog	Deferred Tax Assets Derivative And Hedging Transactions DeferredTaxAssetsDerivativeAndHedgingTransactions	6645000	USD
CY2018Q4	cog	Deferred Tax Assets Derivative And Hedging Transactions DeferredTaxAssetsDerivativeAndHedgingTransactions	0	USD
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CY2017Q4	cog	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year Post65 DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYearPost65	0.0575
CY2018Q4	cog	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year Post65 DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYearPost65	0.0550
CY2016Q4	cog	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year Pre65 DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYearPre65	0.0750
CY2017Q4	cog	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year Pre65 DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYearPre65	0.0750
CY2018Q4	cog	Defined Benefit Plan Health Care Cost Trend Rate Assumed Next Fiscal Year Pre65 DefinedBenefitPlanHealthCareCostTrendRateAssumedNextFiscalYearPre65	0.0725
CY2016	cog	Defined Benefit Plan Net Periodic Benefit Cost Credit Before Curtailmentsand Settlements DefinedBenefitPlanNetPeriodicBenefitCostCreditBeforeCurtailmentsandSettlements	3932000	USD
CY2017	cog	Defined Benefit Plan Net Periodic Benefit Cost Credit Before Curtailmentsand Settlements DefinedBenefitPlanNetPeriodicBenefitCostCreditBeforeCurtailmentsandSettlements	1422000	USD
CY2018	cog	Defined Benefit Plan Net Periodic Benefit Cost Credit Before Curtailmentsand Settlements DefinedBenefitPlanNetPeriodicBenefitCostCreditBeforeCurtailmentsandSettlements	2239000	USD
CY2017	cog	Defined Benefit Plan Number Of Retirees And Dependents DefinedBenefitPlanNumberOfRetireesAndDependents	340	Retiree
CY2018	cog	Defined Benefit Plan Number Of Retirees And Dependents DefinedBenefitPlanNumberOfRetireesAndDependents	337	Retiree
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CY2018	cog	Defined Benefit Plan Subsidy Limit Percentage Of Expected Annual Fully Insured Premium Over Age Threshold DefinedBenefitPlanSubsidyLimitPercentageOfExpectedAnnualFullyInsuredPremiumOverAgeThreshold	0.6
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CY2016Q4	cog	Defined Benefit Plan Ultimate Health Care Cost Trend Rate Post65 DefinedBenefitPlanUltimateHealthCareCostTrendRatePost65	0.0450
CY2017Q4	cog	Defined Benefit Plan Ultimate Health Care Cost Trend Rate Post65 DefinedBenefitPlanUltimateHealthCareCostTrendRatePost65	0.0450
CY2018Q4	cog	Defined Benefit Plan Ultimate Health Care Cost Trend Rate Post65 DefinedBenefitPlanUltimateHealthCareCostTrendRatePost65	0.0450
CY2016Q4	cog	Defined Benefit Plan Ultimate Health Care Cost Trend Rate Pre65 DefinedBenefitPlanUltimateHealthCareCostTrendRatePre65	0.0450
CY2017Q4	cog	Defined Benefit Plan Ultimate Health Care Cost Trend Rate Pre65 DefinedBenefitPlanUltimateHealthCareCostTrendRatePre65	0.0450
CY2018Q4	cog	Defined Benefit Plan Ultimate Health Care Cost Trend Rate Pre65 DefinedBenefitPlanUltimateHealthCareCostTrendRatePre65	0.0450
CY2016	cog	Defined Benefit Plan Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate Post65 DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRatePost65	2018
CY2017	cog	Defined Benefit Plan Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate Post65 DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRatePost65	2023
CY2018	cog	Defined Benefit Plan Year Health Care Cost Trend Rate Reaches Ultimate Trend Rate Post65 DefinedBenefitPlanYearHealthCareCostTrendRateReachesUltimateTrendRatePost65	2023
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CY2016	cog	Effective Income Tax Rate Reconciliation Changein Enacted Tax Rate Stateand Local Percent EffectiveIncomeTaxRateReconciliationChangeinEnactedTaxRateStateandLocalPercent	0.0010
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CY2017	cog	Effective Income Tax Rate Reconciliation Sharebased Compensation Excess Tax Expense Amount EffectiveIncomeTaxRateReconciliationSharebasedCompensationExcessTaxExpenseAmount	3000000	USD
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CY2016	cog	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.0000
CY2017	cog	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	-1.0632
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CY2018	cog	Equity Method Investments Numberof Investments EquityMethodInvestmentsNumberofInvestments	2	investment
CY2017Q4	cog	Gathering And Pipeline Systems GatheringAndPipelineSystems	1569000	USD
CY2018Q4	cog	Gathering And Pipeline Systems GatheringAndPipelineSystems	83000	USD
CY2016	cog	Income Tax Reconciliation Deferred Tax Adjustment Related To Change In Overall State Tax Rate IncomeTaxReconciliationDeferredTaxAdjustmentRelatedToChangeInOverallStateTaxRate	-10888000	USD
CY2017	cog	Income Tax Reconciliation Deferred Tax Adjustment Related To Change In Overall State Tax Rate IncomeTaxReconciliationDeferredTaxAdjustmentRelatedToChangeInOverallStateTaxRate	-4239000	USD
CY2018	cog	Income Tax Reconciliation Deferred Tax Adjustment Related To Change In Overall State Tax Rate IncomeTaxReconciliationDeferredTaxAdjustmentRelatedToChangeInOverallStateTaxRate	11850000	USD
CY2017Q4	cog	Natural Gas Purchase NaturalGasPurchase	4299000	USD
CY2018Q4	cog	Natural Gas Purchase NaturalGasPurchase	0	USD
CY2016	cog	Number Of Non Financial Assets And Liabilities Impaired NumberOfNonFinancialAssetsAndLiabilitiesImpaired	0	Impaired_Asset_And_Liabilty
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CY2016	cog	Proceedsfrom Paymentsfor Derivative Instrument Operating Activities ProceedsfromPaymentsforDerivativeInstrumentOperatingActivities	-1682000	USD
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CY2018Q1	cog	Stock Repurchase Program Incremental Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramIncrementalNumberOfSharesAuthorizedToBeRepurchased	25000000	shares
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CY2018	cog	Tax Cuts And Jobs Act2017 Reclassification Of Stranded Tax Benefits TaxCutsAndJobsAct2017ReclassificationOfStrandedTaxBenefits	446000	USD
CY2016	cog	Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Tax Rate Deferred Tax Liability Provisional Income Tax Expense Benefit TaxCutsAndJobsActOf2017IncompleteAccountingChangeInTaxRateDeferredTaxLiabilityProvisionalIncomeTaxExpenseBenefit	0	USD
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CY2017Q4	cog	Taxes Other Than Income Payable TaxesOtherThanIncomePayable	16801000	USD
CY2018Q4	cog	Taxes Other Than Income Payable TaxesOtherThanIncomePayable	19824000	USD
CY2018	dei	Amendment Flag AmendmentFlag	false
CY2018	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2018	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
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CY2018	dei	Document Period End Date DocumentPeriodEndDate	2018-12-31
CY2018	dei	Document Type DocumentType	10-K
CY2018	dei	Entity Central Index Key EntityCentralIndexKey	0000858470
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CY2018	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2018	dei	Entity Emerging Growth Company EntityEmergingGrowthCompany	false
CY2018	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
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CY2018	dei	Entity Registrant Name EntityRegistrantName	CABOT OIL & GAS CORP
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CY2018	dei	Entity Small Business EntitySmallBusiness	false
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CY2018	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	33100000	USD
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CY2018	us-gaap	Amortization Of Financing Costs AmortizationOfFinancingCosts	4631000	USD
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CY2018Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	1000000	USD
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CY2018	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	1035000	USD
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CY2018Q4	us-gaap	Assets Fair Value Disclosure AssetsFairValueDisclosure	74804000	USD
CY2018Q4	us-gaap	Assets Assets	4198829000	USD
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CY2018	us-gaap	Capitalized Exploratory Well Cost Additions Pending Determination Of Proved Reserves CapitalizedExploratoryWellCostAdditionsPendingDeterminationOfProvedReserves	0	USD
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CY2017	us-gaap	Capitalized Exploratory Well Cost Charged To Expense1 CapitalizedExploratoryWellCostChargedToExpense1	0	USD
CY2018	us-gaap	Capitalized Exploratory Well Cost Charged To Expense1 CapitalizedExploratoryWellCostChargedToExpense1	19511000	USD
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CY2016Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	0	USD
CY2017Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	19511000	USD
CY2018Q4	us-gaap	Capitalized Exploratory Well Costs CapitalizedExploratoryWellCosts	0	USD
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CY2018	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.25
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CY2017Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	475547419	shares
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CY2018	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	559403000	USD
CY2017Q4	us-gaap	Contract With Customer Asset Net ContractWithCustomerAssetNet	215500000	USD
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CY2016Q4	us-gaap	Cumulative Effect Of New Accounting Principle In Period Of Adoption CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption	42172000	USD
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CY2018	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	229603000	USD
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CY2018	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-1040000	USD
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CY2018Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	2957000	USD
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CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax	114100000	USD
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CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	3541000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Foreign DeferredTaxAssetsTaxCreditCarryforwardsForeign	3473000	USD
CY2017Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	3524000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Tax Credit Carryforwards Other DeferredTaxAssetsTaxCreditCarryforwardsOther	3380000	USD
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CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	16711000	USD
CY2018Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	14943000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	227030000	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	458597000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	0	USD
CY2018Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	13168000	USD
CY2017Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	227030000	USD
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CY2018Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	670704000	USD
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CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeBeforeTax	-5750000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Gains Losses Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetGainsLossesBeforeTax	2266000	USD
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CY2016Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	704000	USD
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CY2018Q4	us-gaap	Defined Benefit Plan Accumulated Other Comprehensive Income Net Prior Service Cost Credit Before Tax DefinedBenefitPlanAccumulatedOtherComprehensiveIncomeNetPriorServiceCostCreditBeforeTax	-4497000	USD
CY2016	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	2846000	USD
CY2017	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	-5156000	USD
CY2018	us-gaap	Defined Benefit Plan Actuarial Gain Loss DefinedBenefitPlanActuarialGainLoss	3165000	USD
CY2016	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	111000	USD
CY2017	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-1183000	USD
CY2018	us-gaap	Defined Benefit Plan Amortization Of Prior Service Cost Credit DefinedBenefitPlanAmortizationOfPriorServiceCostCredit	-709000	USD
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CY2017Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0385
CY2018Q4	us-gaap	Defined Benefit Plan Assumptions Used Calculating Benefit Obligation Discount Rate DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate	0.0445
CY2015Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	36626000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	37482000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	31050000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Benefit Obligation DefinedBenefitPlanBenefitObligation	29777000	USD
CY2016	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	934000	USD
CY2018	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	1056000	USD
CY2016	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	0	USD
CY2017	us-gaap	Defined Benefit Plan Benefit Obligation Benefits Paid DefinedBenefitPlanBenefitObligationBenefitsPaid	1204000	USD
CY2018	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1172000	USD
CY2016	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	3932000	USD
CY2017	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	-3495000	USD
CY2018	us-gaap	Defined Benefit Plan Net Periodic Benefit Cost DefinedBenefitPlanNetPeriodicBenefitCost	2239000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-37482000	USD
CY2017Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-31050000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Funded Status Of Plan DefinedBenefitPlanFundedStatusOfPlan	-29777000	USD
CY2016	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1498000	USD
CY2017	us-gaap	Defined Benefit Plan Interest Cost DefinedBenefitPlanInterestCost	1097000	USD
CY2017	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	4346000	USD
CY2018	us-gaap	Defined Benefit Plan Curtailments DefinedBenefitPlanCurtailments	0	USD
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CY2018	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Decrease On Service And Interest Cost Components1 DefinedBenefitPlanEffectOfOnePercentagePointDecreaseOnServiceAndInterestCostComponents1	510000	USD
CY2018	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Accumulated Postretirement Benefit Obligation DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnAccumulatedPostretirementBenefitObligation	4129000	USD
CY2018	us-gaap	Defined Benefit Plan Effect Of One Percentage Point Increase On Service And Interest Cost Components DefinedBenefitPlanEffectOfOnePercentagePointIncreaseOnServiceAndInterestCostComponents	668000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter	8993000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths	1907000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Five DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive	2012000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Four DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour	2013000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Three DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree	1951000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Benefit Payments Year Two DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo	1954000	USD
CY2018Q4	us-gaap	Defined Benefit Plan Expected Future Employer Contributions Next Fiscal Year DefinedBenefitPlanExpectedFutureEmployerContributionsNextFiscalYear	1900000	USD
CY2016Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
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CY2018Q4	us-gaap	Defined Benefit Plan Fair Value Of Plan Assets DefinedBenefitPlanFairValueOfPlanAssets	0	USD
CY2016	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	815000	USD
CY2017	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	-8643000	USD
CY2018	us-gaap	Defined Benefit Plan Plan Amendments DefinedBenefitPlanPlanAmendments	0	USD
CY2016	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	0	USD
CY2017	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	4917000	USD
CY2018	us-gaap	Defined Benefit Plan Recognized Net Gain Loss Due To Curtailments DefinedBenefitPlanRecognizedNetGainLossDueToCurtailments	0	USD
CY2016	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	2323000	USD
CY2017	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1508000	USD
CY2018	us-gaap	Defined Benefit Plan Service Cost DefinedBenefitPlanServiceCost	1776000	USD
CY2018	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	3100000	USD
CY2016	us-gaap	Defined Contribution Plan Increase Decrease Cost DefinedContributionPlanIncreaseDecreaseCost	1800000	USD
CY2017	us-gaap	Defined Contribution Plan Increase Decrease Cost DefinedContributionPlanIncreaseDecreaseCost	2600000	USD
CY2018	us-gaap	Defined Contribution Plan Increase Decrease Cost DefinedContributionPlanIncreaseDecreaseCost	3100000	USD
CY2017Q4	us-gaap	Deposits Deposits	81500000	USD
CY2018Q4	us-gaap	Deposits Deposits	0	USD
CY2016	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	590128000	USD
CY2017	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	568817000	USD
CY2018	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	417479000	USD
CY2017Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	0	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Gross Liability DerivativeAssetFairValueGrossLiability	2440000	USD
CY2017Q4	us-gaap	Derivative Asset Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	2239000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	2440000	USD
CY2018Q4	us-gaap	Derivative Asset Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeAssetFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	57665000	USD
CY2017Q4	us-gaap	Derivative Assets DerivativeAssets	2239000	USD
CY2018Q4	us-gaap	Derivative Assets DerivativeAssets	57665000	USD
CY2017Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	2239000	USD
CY2018Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	0	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	2239000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	60105000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	0	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Asset Amount Offset Against Collateral DerivativeFairValueOfDerivativeAssetAmountOffsetAgainstCollateral	0	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	30637000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability DerivativeFairValueOfDerivativeLiability	2440000	USD
CY2017Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	241000	USD
CY2018Q4	us-gaap	Derivative Fair Value Of Derivative Liability Amount Not Offset Against Collateral DerivativeFairValueOfDerivativeLiabilityAmountNotOffsetAgainstCollateral	0	USD
CY2017Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	0	USD
CY2018Q4	us-gaap	Derivative Instruments And Hedges DerivativeInstrumentsAndHedges	57665000	USD
CY2016	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-38950000	USD
CY2017	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	16926000	USD
CY2018	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	44432000	USD
CY2017Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	30637000	USD
CY2018Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	0	USD
CY2017Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	30637000	USD
CY2018Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	0	USD
CY2017Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2017Q4	us-gaap	Derivative Liability Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	30878000	USD
CY2018Q4	us-gaap	Derivative Liability Fair Value Offset Against Collateral Net Of Not Subject To Master Netting Arrangement Policy Election DerivativeLiabilityFairValueOffsetAgainstCollateralNetOfNotSubjectToMasterNettingArrangementPolicyElection	0	USD
CY2016	us-gaap	Direct Operating Costs DirectOperatingCosts	100696000	USD
CY2017	us-gaap	Direct Operating Costs DirectOperatingCosts	102310000	USD
CY2018	us-gaap	Direct Operating Costs DirectOperatingCosts	69646000	USD
CY2017Q4	us-gaap	Disposal Group Including Discontinued Operation Assets Noncurrent DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent	778855000	USD
CY2018Q4	us-gaap	Disposal Group Including Discontinued Operation Assets Noncurrent DisposalGroupIncludingDiscontinuedOperationAssetsNoncurrent	0	USD
CY2016	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	36187000	USD
CY2017	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	78838000	USD
CY2018	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	111369000	USD
CY2016	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-0.91
CY2017	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.22
CY2018	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.25
CY2016	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-0.91
CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.22
CY2018	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.24
CY2016	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.3676
CY2017	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	1.4395
CY2018	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.2021
CY2016	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2017	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2018	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.21
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.0002
CY2017	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	USD
CY2018	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	1296000	USD
CY2015Q4	us-gaap	Equity Method Investments EquityMethodInvestments	103517000	USD
CY2016Q4	us-gaap	Equity Method Investments EquityMethodInvestments	129524000	USD
CY2017Q4	us-gaap	Equity Method Investments EquityMethodInvestments	86077000	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.0022
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	0.0129
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.0002
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.0041
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Other Adjustments EffectiveIncomeTaxRateReconciliationOtherAdjustments	0.0024
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Change In Deferred Tax Assets Valuation Allowance EffectiveIncomeTaxRateReconciliationChangeInDeferredTaxAssetsValuationAllowance	-0.0003
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	0.0142
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Prior Year Income Taxes EffectiveIncomeTaxRateReconciliationPriorYearIncomeTaxes	-0.0025
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	0	USD
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	2965000	USD
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Amount EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitAmount	327000	USD
CY2016	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.0000
CY2017	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	-0.0130
CY2018	us-gaap	Effective Income Tax Rate Reconciliation Share Based Compensation Excess Tax Benefit Percent EffectiveIncomeTaxRateReconciliationShareBasedCompensationExcessTaxBenefitPercent	0.0005
CY2016	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0165
CY2017	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0186
CY2018	us-gaap	Effective Income Tax Rate Reconciliation State And Local Income Taxes EffectiveIncomeTaxRateReconciliationStateAndLocalIncomeTaxes	0.0170
CY2016	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	USD
CY2018Q4	us-gaap	Equity Method Investments EquityMethodInvestments	163181000	USD
CY2016	us-gaap	Exploration Expense ExplorationExpense	27662000	USD
CY2017	us-gaap	Exploration Expense ExplorationExpense	21526000	USD
CY2018	us-gaap	Exploration Expense ExplorationExpense	113820000	USD
CY2016Q4	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0	USD
CY2017Q4	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0	USD
CY2018Q4	us-gaap	Fair Value Assets Level1 To Level2 Transfers Amount FairValueAssetsLevel1ToLevel2TransfersAmount	0	USD
CY2016Q4	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0	USD
CY2017Q4	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0	USD
CY2018Q4	us-gaap	Fair Value Assets Level2 To Level1 Transfers Amount FairValueAssetsLevel2ToLevel1TransfersAmount	0	USD
CY2016Q4	us-gaap	Fair Value Liabilities Level1 To Level2 Transfers Amount FairValueLiabilitiesLevel1ToLevel2TransfersAmount	0	USD
CY2017Q4	us-gaap	Fair Value Liabilities Level1 To Level2 Transfers Amount FairValueLiabilitiesLevel1ToLevel2TransfersAmount	0	USD
CY2018Q4	us-gaap	Fair Value Liabilities Level1 To Level2 Transfers Amount FairValueLiabilitiesLevel1ToLevel2TransfersAmount	0	USD
CY2016Q4	us-gaap	Fair Value Liabilities Level2 To Level1 Transfers Amount FairValueLiabilitiesLevel2ToLevel1TransfersAmount	0	USD
CY2017Q4	us-gaap	Fair Value Liabilities Level2 To Level1 Transfers Amount FairValueLiabilitiesLevel2ToLevel1TransfersAmount	0	USD
CY2018Q4	us-gaap	Fair Value Liabilities Level2 To Level1 Transfers Amount FairValueLiabilitiesLevel2ToLevel1TransfersAmount	0	USD
CY2016	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Change In Unrealized Gain Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-15868000	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Change In Unrealized Gain Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	-28398000	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Change In Unrealized Gain Loss FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisChangeInUnrealizedGainLoss	19732000	USD
CY2016	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	-17886000	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	-1866000	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Gain Loss Included In Earnings FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationGainLossIncludedInEarnings	31184000	USD
CY2017	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	0	USD
CY2018	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	44432000	USD
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-1857000	USD
CY2016	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-1900000	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-11565000	USD
CY2017	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-11600000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-16300000	USD
CY2018	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-16327000	USD
CY2016	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-4709000	USD
CY2016	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases Sales Issues Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchasesSalesIssuesSettlements	2018000	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases Sales Issues Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchasesSalesIssuesSettlements	-10664000	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Purchases Sales Issues Settlements FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationPurchasesSalesIssuesSettlements	19190000	USD
CY2016	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Net FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersNet	0	USD
CY2017	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Net FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersNet	0	USD
CY2018	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis Unobservable Inputs Reconciliation Transfers Net FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisUnobservableInputsReconciliationTransfersNet	0	USD
CY2015Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	0	USD
CY2016Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-15868000	USD
CY2017Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	-28398000	USD
CY2018Q4	us-gaap	Fair Value Net Derivative Asset Liability Measured On Recurring Basis With Unobservable Inputs FairValueNetDerivativeAssetLiabilityMeasuredOnRecurringBasisWithUnobservableInputs	21976000	USD
CY2016	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	-38950000	USD
CY2017	us-gaap	Gain Loss On Sale Of Derivatives GainLossOnSaleOfDerivatives	16926000	USD
CY2016	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	85633000	USD
CY2017	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	97786000	USD
CY2018	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	96641000	USD
CY2016	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	435619000	USD
CY2017	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	482811000	USD
CY2018	us-gaap	Impairment Of Oil And Gas Properties ImpairmentOfOilAndGasProperties	0	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-659599000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-228435000	USD
CY2018	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	698137000	USD
CY2016	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-2477000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-100486000	USD
CY2018	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	1137000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-242475000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-328828000	USD
CY2018	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	141094000	USD
CY2017Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	0	USD
CY2018Q4	us-gaap	Income Tax Receivable IncomeTaxReceivable	8165000	USD
CY2016	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	221000	USD
CY2017	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-505000	USD
CY2018	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	8975000	USD
CY2016	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-230860000	USD
CY2017	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-79952000	USD
CY2018	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	146609000	USD
CY2016	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-164000	USD
CY2017	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-932000	USD
CY2018	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	1681000	USD
CY2017	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-3242000	USD
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	0	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	1816000	shares
CY2018	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2030000	shares
CY2016	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-88336000	USD
CY2017	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-82130000	USD
CY2018	us-gaap	Income Tax Reconciliation Prior Year Income Taxes IncomeTaxReconciliationPriorYearIncomeTaxes	-1773000	USD
CY2016	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-663000	USD
CY2017	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-48000	USD
CY2018	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-15208000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	688000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	40626000	USD
CY2018	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	4635000	USD
CY2017Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	56666000	USD
CY2018Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	109251000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	10858000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	-2552000	USD
CY2018	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	30468000	USD
CY2016	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	-5975000	USD
CY2017	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	-46368000	USD
CY2018	us-gaap	Increase Decrease In Income Taxes Payable Net Of Income Taxes Receivable IncreaseDecreaseInIncomeTaxesPayableNetOfIncomeTaxesReceivable	-59616000	USD
CY2016	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-2573000	USD
CY2017	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-75000	USD
CY2018	us-gaap	Increase Decrease In Interest Payable Net IncreaseDecreaseInInterestPayableNet	-7477000	USD
CY2016	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-3044000	USD
CY2017	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	-1334000	USD
CY2018	us-gaap	Increase Decrease In Inventories IncreaseDecreaseInInventories	3927000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-2465000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	5141000	USD
CY2018	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-23079000	USD
CY2016	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	21000	USD
CY2017	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	104000	USD
CY2018	us-gaap	Increase Decrease In Prepaid Deferred Expense And Other Assets IncreaseDecreaseInPrepaidDeferredExpenseAndOtherAssets	-934000	USD
CY2016	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	71060000	USD
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	25036000	USD
CY2018	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	146921000	USD
CY2018	us-gaap	Interest Income Expense Net InterestIncomeExpenseNet	-73201000	USD
CY2016	us-gaap	Interest Paid Net InterestPaidNet	86723000	USD
CY2017	us-gaap	Interest Paid Net InterestPaidNet	79846000	USD
CY2018	us-gaap	Interest Paid Net InterestPaidNet	80069000	USD
CY2017Q4	us-gaap	Interest Payable Current InterestPayableCurrent	27575000	USD
CY2018Q4	us-gaap	Interest Payable Current InterestPayableCurrent	20098000	USD
CY2017Q4	us-gaap	Inventory Net InventoryNet	8006000	USD
CY2018Q4	us-gaap	Inventory Net InventoryNet	11076000	USD
CY2016	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	10700000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	9700000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	397441000	USD
CY2018Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1226104000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	453805000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-210502000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	898160000	USD
CY2018	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1104903000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-417124000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	100393000	USD
CY2018	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	9300000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	2203439000	USD
CY2018Q4	us-gaap	Liabilities Liabilities	2110670000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4727344000	USD
CY2018Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	4198829000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	630050000	USD
CY2018Q4	us-gaap	Liabilities Current LiabilitiesCurrent	287264000	USD
CY2017Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	59782000	USD
CY2018Q4	us-gaap	Liabilities Fair Value Disclosure LiabilitiesFairValueDisclosure	28220000	USD
CY2017Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	2352000	USD
CY2018Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2017Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Noncurrent LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	15748000	USD
CY2018Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Noncurrent LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	0	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	1521891000	USD
CY2018Q4	us-gaap	Long Term Debt LongTermDebt	1226104000	USD
CY2017Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	304000000	USD
CY2018Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	0	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	62000000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	188000000	USD
CY2018Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	87000000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	1217891000	USD
CY2018	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1289280000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-353218000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-706153000	USD
CY2018	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-293383000	USD
CY2018	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	557043000	USD
CY2018	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	Segment
CY2017Q4	us-gaap	Oil And Gas Joint Interest Billing Receivables OilAndGasJointInterestBillingReceivables	467000	USD
CY2018Q4	us-gaap	Oil And Gas Joint Interest Billing Receivables OilAndGasJointInterestBillingReceivables	101000	USD
CY2016	us-gaap	Operating Expenses OperatingExpenses	1716288000	USD
CY2017	us-gaap	Operating Expenses OperatingExpenses	1803428000	USD
CY2018	us-gaap	Operating Expenses OperatingExpenses	1401157000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	-564945000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	-151260000	USD
CY2018	us-gaap	Operating Income Loss OperatingIncomeLoss	771801000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	22234000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	5571000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	1691000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	1659000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	4777000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	5684000	USD
CY2018Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	2852000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	1294000	USD
CY2018Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	994000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	2794000	USD
CY2018Q4	us-gaap	Other Assets Current OtherAssetsCurrent	1863000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	56000	USD
CY2018Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	61000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	23012000	USD
CY2018Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	27497000	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	815000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	-8643000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	0	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	514000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	-5449000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	0	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	1794000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-2634000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	2461000	USD
CY2016	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	1052000	USD
CY2017	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	-1544000	USD
CY2018	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	704000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	111000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-2733000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Before Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditBeforeTax	-709000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	70000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-1723000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Net Of Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditNetOfTax	-547000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	-41000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	1010000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Amortization Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Prior Service Cost Credit Tax OtherComprehensiveIncomeLossAmortizationAdjustmentFromAOCIPensionAndOtherPostretirementBenefitPlansForNetPriorServiceCostCreditTax	162000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1350000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	1092000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	2360000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1350000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	1092000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	2360000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-2142000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-1732000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-2456000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	301000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	-3194000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	0	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	2846000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-4178000	USD
CY2018	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	3165000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	39723000	USD
CY2018Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	60171000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1609000	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	4955000	USD
CY2018	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-463000	USD
CY2017Q4	us-gaap	Other Receivables OtherReceivables	1312000	USD
CY2018Q4	us-gaap	Other Receivables OtherReceivables	567000	USD
CY2017Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	10578000	USD
CY2018Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	34391000	USD
CY2016	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	0	USD
CY2017	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	123741000	USD
CY2018	us-gaap	Payments For Repurchase Of Equity PaymentsForRepurchaseOfEquity	872761000	USD
CY2016	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	3223000	USD
CY2017	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2018	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	36187000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	78838000	USD
CY2018	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	111369000	USD
CY2016	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	5064000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	7973000	USD
CY2018	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	8150000	USD
CY2016	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	28484000	USD
CY2017	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	57039000	USD
CY2018	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	77263000	USD
CY2016	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	375153000	USD
CY2017	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	764558000	USD
CY2018	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	894470000	USD
CY2016Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	1223000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	1654000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	1865000	USD
CY2016Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	37482000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	31050000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	29777000	USD
CY2016Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	36259000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	29396000	USD
CY2018Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent	27912000	USD
CY2016Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	865700000	USD
CY2016Q1	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	129900000	USD
CY2016	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	995279000	USD
CY2017	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	0	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	50000	USD
CY2018	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2016Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	6600000.0	shares
CY2018	us-gaap	Stock Issued During Period Shares Treasury Stock Reissued StockIssuedDuringPeriodSharesTreasuryStockReissued	0	shares
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	90000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
CY2018	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	158000000	USD
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	0	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1162430000	USD
CY2018Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1607658000	USD
CY2016	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1194627000	USD
CY2017	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	1747293000	USD
CY2018	us-gaap	Revenue From Contract With Customer Excluding Assessed Tax RevenueFromContractWithCustomerExcludingAssessedTax	2143716000	USD
CY2016Q1	us-gaap	Stock Issued During Period Shares New Issues StockIssuedDuringPeriodSharesNewIssues	44000000	shares
CY2016	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	50419000	USD
CY2017	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	115444000	USD
CY2018	us-gaap	Proceeds From Sale Of Property Plant And Equipment ProceedsFromSaleOfPropertyPlantAndEquipment	678350000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	5207225000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	6006377000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3072204000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	3463606000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	82670000	USD
CY2018Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	94714000	USD
CY2017Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	4932512000	USD
CY2018Q4	us-gaap	Proved Oil And Gas Property Successful Effort Method ProvedOilAndGasPropertySuccessfulEffortMethod	5717145000	USD
CY2017Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	216004000	USD
CY2018Q4	us-gaap	Receivables Net Current ReceivablesNetCurrent	362403000	USD
CY2016	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	0	USD
CY2017	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	0	USD
CY2018	us-gaap	Reclassification To Well Facilities And Equipment Based On Determination Of Proved Reserves ReclassificationToWellFacilitiesAndEquipmentBasedOnDeterminationOfProvedReserves	0	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	587000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	0	USD
CY2018	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	455000000	USD
CY2016	us-gaap	Results Of Operations Dry Hole Costs ResultsOfOperationsDryHoleCosts	10120000	USD
CY2017	us-gaap	Results Of Operations Dry Hole Costs ResultsOfOperationsDryHoleCosts	3820000	USD
CY2018	us-gaap	Results Of Operations Dry Hole Costs ResultsOfOperationsDryHoleCosts	97741000	USD
CY2018Q4	us-gaap	Revenue Remaining Performance Obligation RevenueRemainingPerformanceObligation	10100000000	USD
CY2016	us-gaap	Revenues Revenues	1155677000	USD
CY2017	us-gaap	Revenues Revenues	1764219000	USD
CY2018	us-gaap	Revenues Revenues	2188148000	USD
CY2016Q1	us-gaap	Share Price SharePrice	19.675
CY2016	us-gaap	Stock Issued During Period Value New Issues StockIssuedDuringPeriodValueNewIssues	995289000	USD
CY2016	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	-198000	USD
CY2017	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	0	USD
CY2018	us-gaap	Stock Issued During Period Value Stock Options Exercised StockIssuedDuringPeriodValueStockOptionsExercised	0	USD
CY2018Q4	us-gaap	Stock Repurchase Program Number Of Shares Authorized To Be Repurchased StockRepurchaseProgramNumberOfSharesAuthorizedToBeRepurchased	11600000	shares
CY2017	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	123741000	USD
CY2018	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	904112000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	2009188000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	2567667000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	2523905000	USD
CY2018Q4	us-gaap	Stockholders Equity StockholdersEquity	2088159000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	663000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16850000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2018	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	16187000	USD
CY2018Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	3100000	USD
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	456847000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	465551000	shares
CY2016	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	29223000	USD
CY2017	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	33487000	USD
CY2018	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	22642000	USD
CY2017Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	0	USD
CY2018Q4	us-gaap	Taxes Payable Current TaxesPayableCurrent	1134000	USD
CY2017Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	14935926	shares
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	53409705	shares
CY2018Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1379268	shares
CY2016	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	0	shares
CY2017	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	5000000.0	shares
CY2018	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	38500000.0	shares
CY2017Q4	us-gaap	Treasury Stock Value TreasuryStockValue	430576000	USD
CY2018Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1334688000	USD
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	123700000	USD
CY2018	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	904100000	USD
CY2017Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	190474000	USD
CY2018Q4	us-gaap	Unproved Oil And Gas Property Successful Effort Method UnprovedOilAndGasPropertySuccessfulEffortMethod	194435000	USD
CY2016	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	-38950000	USD
CY2017	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	16926000	USD
CY2018	us-gaap	Unrealized Gain Loss On Derivatives UnrealizedGainLossOnDerivatives	44432000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	663000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	663000	USD
CY2018	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	447568000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	456847000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	463735000	shares
CY2018	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	445538000	shares
CY2018	us-gaap	Concentration Risk Credit Risk ConcentrationRiskCreditRisk	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:12px;padding-top:0px;font-size:10pt;"><font style="font-family:Times New Roman;font-size:10pt;color:#000000;font-style:italic;font-weight:normal;text-decoration:none;">Credit and Concentration Risk</font></div><div style="line-height:120%;padding-bottom:12px;padding-left:0px;text-indent:30px;font-size:10pt;"><font style="font-family:Times New Roman;font-size:10pt;color:#000000;font-style:normal;font-weight:normal;text-decoration:none;">Substantially all of the Company's accounts receivable result from the sale of natural gas and oil and joint interest billings to third parties in the oil and gas industry. This concentration of purchasers and joint interest owners may impact the Company's overall credit risk, either positively or negatively, in that these entities may be similarly affected by changes in economic or other conditions. The Company does not anticipate any material impact on its financial results due to non-performance by the third parties.</font></div></div>
CY2018	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:12px;padding-top:0px;font-size:10pt;"><font style="font-family:Times New Roman;font-size:10pt;color:#000000;font-style:italic;font-weight:normal;text-decoration:none;">Use of Estimates</font></div><div style="line-height:120%;padding-bottom:12px;padding-left:0px;text-indent:30px;font-size:10pt;"><font style="font-family:Times New Roman;font-size:10pt;color:#000000;font-style:normal;font-weight:normal;text-decoration:none;">In preparing financial statements, the Company follows accounting principles generally accepted in the United States. These principles require management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities at the date of the financial statements, and the reported amounts of revenues and expenses during the reporting period. The most significant estimates pertain to proved natural gas and oil reserves and related cash flow estimates which are used to compute depreciation, depletion and amortization and impairments of proved oil and gas properties. Other significant estimates include natural gas and oil revenues and expenses, fair value of derivative instruments, estimates of expenses related to legal, environmental and other contingencies, asset retirement obligations, postretirement obligations, stock-based compensation and deferred income taxes. Actual results could differ from those estimates.</font></div></div>

Files In Submission

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$CTRA
Coterra Energy Inc. Stock $ctra

2018 Q4 Form 10-K Financial Statement

#000085847019000008 Filed on February 26, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CTRA Coterra Energy Inc. Stock $ctra

2018 Q4 Form 10-K Financial Statement

#000085847019000008 Filed on February 26, 2019

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$CTRA
Coterra Energy Inc. Stock $ctra