2016 Q4 Form 10-K Financial Statement
#000003321318000003 Filed on February 15, 2018
Income Statement
| Concept | 2016 Q4 | 2016 Q3 | 2016 Q2 |
|---|---|---|---|
| Revenue | $379.0M | $556.7M | $127.5M |
| YoY Change | -36.97% | -4.67% | -70.99% |
| Cost Of Revenue | $717.1M | $115.9M | $117.3M |
| YoY Change | 518.19% | 10.91% | 16.37% |
| Gross Profit | -$559.4M | $440.8M | $10.20M |
| YoY Change | -210.82% | -8.07% | -96.99% |
| Gross Profit Margin | -147.59% | 79.18% | 8.0% |
| Selling, General & Admin | $22.30M | $61.43M | $77.35M |
| YoY Change | -60.53% | 1.31% | 18.27% |
| % of Gross Profit | 13.94% | 758.35% | |
| Research & Development | -$4.700M | $2.700M | $3.600M |
| YoY Change | -115.77% | -67.07% | -68.42% |
| % of Gross Profit | 0.61% | 35.29% | |
| Depreciation & Amortization | $245.0M | $237.1M | $224.6M |
| YoY Change | 11.67% | 13.86% | 14.13% |
| % of Gross Profit | 53.79% | 2202.25% | |
| Operating Expenses | $99.10M | $61.43M | $77.35M |
| YoY Change | -70.59% | 1.31% | 18.27% |
| Operating Profit | -$189.5M | $108.5M | -$324.5M |
| YoY Change | -518.33% | -36.22% | -1082.3% |
| Interest Expense | -$22.70M | $35.98M | $36.31M |
| YoY Change | -36.77% | -1.54% | -1.43% |
| % of Operating Profit | 33.18% | ||
| Other Income/Expense, Net | -$31.30M | $10.70M | $7.600M |
| YoY Change | -945.95% | 296.3% | 181.48% |
| Pretax Income | -$720.2M | $83.19M | -$353.2M |
| YoY Change | -5640.0% | -38.91% | 31715.59% |
| Income Tax | -$210.9M | $13.08M | -$172.3M |
| % Of Pretax Income | 15.73% | ||
| Net Earnings | -$192.0M | -$8.016M | -$258.6M |
| YoY Change | 42.64% | -119.65% | -4772.06% |
| Net Earnings / Revenue | -50.65% | -1.44% | -202.81% |
| Basic Earnings Per Share | -$1.11 | -$0.05 | -$1.55 |
| Diluted Earnings Per Share | -$1.11 | -$0.05 | -$1.55 |
| COMMON SHARES | |||
| Basic Shares Outstanding | 172.9M shares | 166.8M shares | |
| Diluted Shares Outstanding | 172.9M shares | 166.8M shares |
Balance Sheet
| Concept | 2016 Q4 | 2016 Q3 | 2016 Q2 |
|---|---|---|---|
| SHORT-TERM ASSETS | |||
| Cash & Short-Term Investments | $1.390B | $1.757B | $2.257B |
| YoY Change | -13.18% | 5.65% | 15.27% |
| Cash & Equivalents | $1.104B | $1.757B | $2.257B |
| Short-Term Investments | $286.0M | ||
| Other Short-Term Assets | $97.00M | $200.0M | $187.0M |
| YoY Change | -79.45% | -55.85% | -51.05% |
| Inventory | |||
| Prepaid Expenses | |||
| Receivables | $341.6M | $189.4M | $170.3M |
| Other Receivables | $0.00 | $0.00 | $0.00 |
| Total Short-Term Assets | $1.828B | $2.146B | $2.614B |
| YoY Change | -18.78% | -5.16% | 4.96% |
| LONG-TERM ASSETS | |||
| Property, Plant & Equipment | $13.16B | $12.41B | $11.84B |
| YoY Change | 14.73% | 10.07% | 8.62% |
| Goodwill | $0.00 | ||
| YoY Change | |||
| Intangibles | $0.00 | ||
| YoY Change | |||
| Long-Term Investments | $184.6M | $160.3M | $135.9M |
| YoY Change | 139.61% | 192.5% | |
| Other Assets | $222.9M | $175.8M | $191.3M |
| YoY Change | 26.58% | -14.28% | 43.75% |
| Total Long-Term Assets | $13.64B | $12.74B | $12.17B |
| YoY Change | 16.37% | 11.04% | 9.81% |
| TOTAL ASSETS | |||
| Total Short-Term Assets | $1.828B | $2.146B | $2.614B |
| Total Long-Term Assets | $13.64B | $12.74B | $12.17B |
| Total Assets | $15.47B | $14.89B | $14.78B |
| YoY Change | 10.71% | 8.37% | 8.92% |
| SHORT-TERM LIABILITIES | |||
| YoY Change | |||
| Accounts Payable | $310.0M | $264.8M | $251.7M |
| YoY Change | 6.32% | -0.24% | -12.41% |
| Accrued Expenses | |||
| YoY Change | |||
| Deferred Revenue | |||
| YoY Change | |||
| Short-Term Debt | $0.00 | $91.00M | $0.00 |
| YoY Change | -100.0% | -74.0% | -100.0% |
| Long-Term Debt Due | $0.00 | ||
| YoY Change | |||
| Total Short-Term Liabilities | $804.6M | $618.6M | $527.3M |
| YoY Change | 1.11% | -37.58% | -48.87% |
| LONG-TERM LIABILITIES | |||
| Long-Term Debt | $3.289B | $2.797B | $2.796B |
| YoY Change | 17.76% | -0.76% | -0.8% |
| Other Long-Term Liabilities | $499.6M | $382.4M | $395.3M |
| YoY Change | 29.16% | 26.23% | 43.19% |
| Total Long-Term Liabilities | $3.789B | $3.179B | $3.191B |
| YoY Change | 19.15% | 1.86% | 3.12% |
| TOTAL LIABILITIES | |||
| Total Short-Term Liabilities | $804.6M | $618.6M | $527.3M |
| Total Long-Term Liabilities | $3.789B | $3.179B | $3.191B |
| Total Liabilities | $6.354B | $5.616B | $5.526B |
| YoY Change | 6.82% | -6.21% | -6.77% |
| SHAREHOLDERS EQUITY | |||
| Retained Earnings | $2.509B | $2.706B | $2.719B |
| YoY Change | -15.87% | -13.3% | -11.85% |
| Common Stock | $3.440B | $3.419B | $3.403B |
| YoY Change | 59.76% | 43.39% | 44.7% |
| Preferred Stock | |||
| YoY Change | |||
| Treasury Stock (at cost) | $91.02M | $92.28M | $92.48M |
| YoY Change | -12.55% | -77.59% | -77.67% |
| Treasury Stock Shares | 5.069M shares | 5.139M shares | 5.150M shares |
| Shareholders Equity | $5.860B | $6.046B | $6.058B |
| YoY Change | |||
| Total Liabilities & Shareholders Equity | $15.47B | $14.89B | $14.78B |
| YoY Change | 10.71% | 8.37% | 8.92% |
Cashflow Statement
| Concept | 2016 Q4 | 2016 Q3 | 2016 Q2 |
|---|---|---|---|
| OPERATING ACTIVITIES | |||
| Net Income | -$192.0M | -$8.016M | -$258.6M |
| YoY Change | 42.64% | -119.65% | -4772.06% |
| Depreciation, Depletion And Amortization | $245.0M | $237.1M | $224.6M |
| YoY Change | 11.67% | 13.86% | 14.13% |
| Cash From Operating Activities | $296.6M | $274.3M | $208.5M |
| YoY Change | -6.35% | 12.33% | 2.76% |
| INVESTING ACTIVITIES | |||
| Capital Expenditures | -$400.2M | -$784.0M | -$423.9M |
| YoY Change | -27.47% | 35.57% | -38.86% |
| Acquisitions | |||
| YoY Change | |||
| Other Investing Activities | -$816.8M | -$25.70M | -$39.20M |
| YoY Change | -62930.77% | -14.05% | -572.29% |
| Cash From Investing Activities | -$1.217B | -$809.5M | -$463.2M |
| YoY Change | 121.13% | 33.08% | -32.38% |
| FINANCING ACTIVITIES | |||
| Cash Dividend Paid | |||
| YoY Change | |||
| Common Stock Issuance & Retirement, Net | |||
| YoY Change | |||
| Debt Paid & Issued, Net | |||
| YoY Change | |||
| Cash From Financing Activities | 341.6M | 35.70M | 955.2M |
| YoY Change | 98.26% | -47.96% | 45.45% |
| NET CHANGE | |||
| Cash From Operating Activities | 296.6M | 274.3M | 208.5M |
| Cash From Investing Activities | -1.217B | -809.5M | -463.2M |
| Cash From Financing Activities | 341.6M | 35.70M | 955.2M |
| Net Change In Cash | -578.9M | -499.5M | 700.5M |
| YoY Change | 842.83% | 69.04% | 301.2% |
| FREE CASH FLOW | |||
| Cash From Operating Activities | $296.6M | $274.3M | $208.5M |
| Capital Expenditures | -$400.2M | -$784.0M | -$423.9M |
| Free Cash Flow | $696.8M | $1.058B | $632.4M |
| YoY Change | -19.77% | 28.67% | -29.44% |
Facts In Submission
| Frame | Concept Type | Concept / XBRL Key | Value | Unit |
|---|---|---|---|---|
| CY2017 | eqt |
Wells Coveredunder Audit Number Maximum Non Operated Wells
WellsCoveredunderAuditNumberMaximumNonOperatedWells
|
256 | well |
| CY2017Q4 | eqt |
Unrecognized Tax Benefits Excluding Interest And Penalties
UnrecognizedTaxBenefitsExcludingInterestAndPenalties
|
301558000 | USD |
| CY2017 | eqt |
Wells Coveredunder Audit Number Maximum Operated Wells
WellsCoveredunderAuditNumberMaximumOperatedWells
|
200 | well |
| CY2016Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
309978000 | USD |
| CY2017Q4 | us-gaap |
Accounts Payable Current
AccountsPayableCurrent
|
654624000 | USD |
| CY2016Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
341628000 | USD |
| CY2017Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
725236000 | USD |
| CY2015Q4 | eqt |
Unrecognized Tax Benefits Deductible Timing Uncertainty
UnrecognizedTaxBenefitsDeductibleTimingUncertainty
|
6400000 | USD |
| CY2014Q4 | eqt |
Unrecognized Tax Benefits Excluding Interest And Penalties
UnrecognizedTaxBenefitsExcludingInterestAndPenalties
|
56957000 | USD |
| CY2015Q4 | eqt |
Unrecognized Tax Benefits Excluding Interest And Penalties
UnrecognizedTaxBenefitsExcludingInterestAndPenalties
|
259301000 | USD |
| CY2016Q4 | eqt |
Unrecognized Tax Benefits Excluding Interest And Penalties
UnrecognizedTaxBenefitsExcludingInterestAndPenalties
|
252434000 | USD |
| CY2016Q4 | eqt |
Unrecognized Tax Benefits Deductible Timing Uncertainty
UnrecognizedTaxBenefitsDeductibleTimingUncertainty
|
5500000 | USD |
| CY2017Q4 | eqt |
Unrecognized Tax Benefits Deductible Timing Uncertainty
UnrecognizedTaxBenefitsDeductibleTimingUncertainty
|
4700000 | USD |
| CY2017Q4 | us-gaap |
Accrual For Environmental Loss Contingencies
AccrualForEnvironmentalLossContingencies
|
11200000 | USD |
| CY2016Q4 | us-gaap |
Accrual For Taxes Other Than Income Taxes Current
AccrualForTaxesOtherThanIncomeTaxesCurrent
|
56874000 | USD |
| CY2017Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-2458000 | USD |
| CY2017Q4 | us-gaap |
Accrual For Taxes Other Than Income Taxes Current
AccrualForTaxesOtherThanIncomeTaxesCurrent
|
78749000 | USD |
| CY2016Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
5054559000 | USD |
| CY2017Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
6105294000 | USD |
| CY2016Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
2042000 | USD |
| CY2017 | dei |
Amendment Flag
AmendmentFlag
|
false | |
| CY2017 | dei |
Current Fiscal Year End Date
CurrentFiscalYearEndDate
|
--12-31 | |
| CY2017 | dei |
Document Fiscal Period Focus
DocumentFiscalPeriodFocus
|
FY | |
| CY2017 | dei |
Document Fiscal Year Focus
DocumentFiscalYearFocus
|
2017 | |
| CY2017 | dei |
Document Period End Date
DocumentPeriodEndDate
|
2017-12-31 | |
| CY2017 | dei |
Document Type
DocumentType
|
10-K | |
| CY2017 | dei |
Entity Central Index Key
EntityCentralIndexKey
|
0000033213 | |
| CY2018Q1 | dei |
Entity Common Stock Shares Outstanding
EntityCommonStockSharesOutstanding
|
264473000 | shares |
| CY2017 | dei |
Entity Current Reporting Status
EntityCurrentReportingStatus
|
Yes | |
| CY2017 | dei |
Entity Filer Category
EntityFilerCategory
|
Large Accelerated Filer | |
| CY2017Q2 | dei |
Entity Public Float
EntityPublicFloat
|
10100000000 | USD |
| CY2017 | dei |
Entity Registrant Name
EntityRegistrantName
|
EQT Corp | |
| CY2017 | dei |
Entity Voluntary Filers
EntityVoluntaryFilers
|
No | |
| CY2017 | dei |
Entity Well Known Seasoned Issuer
EntityWellKnownSeasonedIssuer
|
Yes | |
| CY2016Q4 | eqt |
Accumulated Other Comprehensive Income Loss Cumulative Changes In Deferred Net Gain Loss From Cash Flow Hedges Effect Net Of Tax
AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInDeferredNetGainLossFromCashFlowHedgesEffectNetOfTax
|
9600000 | USD |
| CY2017Q4 | eqt |
Accumulated Other Comprehensive Income Loss Cumulative Changes In Deferred Net Gain Loss From Cash Flow Hedges Effect Net Of Tax
AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInDeferredNetGainLossFromCashFlowHedgesEffectNetOfTax
|
4600000 | USD |
| CY2017 | eqt |
Adjustments To Fair Value Of Derivative Contracts Due To Credit Risk
AdjustmentsToFairValueOfDerivativeContractsDueToCreditRisk
|
0 | USD |
| CY2015 | eqt |
Adjustmentsto Additional Paidin Capital Changein Subsidiary Ownership
AdjustmentstoAdditionalPaidinCapitalChangeinSubsidiaryOwnership
|
-304747000 | USD |
| CY2016 | eqt |
Adjustmentsto Additional Paidin Capital Changein Subsidiary Ownership
AdjustmentstoAdditionalPaidinCapitalChangeinSubsidiaryOwnership
|
-15194000 | USD |
| CY2015 | eqt |
Asset Impairment Chargesand Exploratory Well Costs
AssetImpairmentChargesandExploratoryWellCosts
|
182242000 | USD |
| CY2016 | eqt |
Asset Impairment Chargesand Exploratory Well Costs
AssetImpairmentChargesandExploratoryWellCosts
|
75434000 | USD |
| CY2017 | eqt |
Asset Impairment Chargesand Exploratory Well Costs
AssetImpairmentChargesandExploratoryWellCosts
|
20327000 | USD |
| CY2016 | eqt |
Asset Retirement Obligation Liabilities Assumedin Acquisitions
AssetRetirementObligationLiabilitiesAssumedinAcquisitions
|
0 | USD |
| CY2017 | eqt |
Asset Retirement Obligation Liabilities Assumedin Acquisitions
AssetRetirementObligationLiabilitiesAssumedinAcquisitions
|
50941000 | USD |
| CY2017 | eqt |
Audit Coverage Of Proved Reserves Percentage
AuditCoverageOfProvedReservesPercentage
|
0.81 | |
| CY2017 | eqt |
Audit Coverage Of Remaining Properties Percentage
AuditCoverageOfRemainingPropertiesPercentage
|
0.19 | |
| CY2017 | eqt |
Business Combination Numberof Acres Acquired
BusinessCombinationNumberofAcresAcquired
|
304000 | acre |
| CY2016 | eqt |
Business Combination Property Acquisition Term
BusinessCombinationPropertyAcquisitionTerm
|
P180D | |
| CY2015 | eqt |
Capitalizationof Noncash Stock Based Compensation
CapitalizationofNoncashStockBasedCompensation
|
25200000 | USD |
| CY2016 | eqt |
Capitalizationof Noncash Stock Based Compensation
CapitalizationofNoncashStockBasedCompensation
|
16600000 | USD |
| CY2017 | eqt |
Capitalizationof Noncash Stock Based Compensation
CapitalizationofNoncashStockBasedCompensation
|
9000000 | USD |
| CY2016 | eqt |
Cashand Cash Equivalents Numberof Certificatesof Depositsin Denominationsgreaterthan0.1 Million Held
CashandCashEquivalentsNumberofCertificatesofDepositsinDenominationsgreaterthan0.1MillionHeld
|
2 | certificate_of_deposit |
| CY2017 | eqt |
Change In Discounted Future Cash Flows For Assumed Natural Gas Price Change
ChangeInDiscountedFutureCashFlowsForAssumedNaturalGasPriceChange
|
1800000000 | USD |
| CY2017 | eqt |
Change In Discounted Future Cash Flows For Assumed Oil Price Change
ChangeInDiscountedFutureCashFlowsForAssumedOilPriceChange
|
50400000 | USD |
| CY2015 | eqt |
Changein Capital Expenditures Incurred But Not Yet Paid
ChangeinCapitalExpendituresIncurredButNotYetPaid
|
-89600000 | USD |
| CY2016 | eqt |
Changein Capital Expenditures Incurred But Not Yet Paid
ChangeinCapitalExpendituresIncurredButNotYetPaid
|
76500000 | USD |
| CY2017 | eqt |
Changein Capital Expenditures Incurred But Not Yet Paid
ChangeinCapitalExpendituresIncurredButNotYetPaid
|
9100000 | USD |
| CY2017 | eqt |
Changein Discounted Future Cash Flowsfor Assumed Natural Gas Liquids Price Change
ChangeinDiscountedFutureCashFlowsforAssumedNaturalGasLiquidsPriceChange
|
978600000 | USD |
| CY2017 | eqt |
Commitments Sizeof Mutual Interest Land
CommitmentsSizeofMutualInterestLand
|
50000 | acre |
| CY2017 | eqt |
Commitments Termination Notice
CommitmentsTerminationNotice
|
P90D | |
| CY2017 | eqt |
Commitments Termof Agreement
CommitmentsTermofAgreement
|
P10Y | |
| CY2016Q4 | eqt |
Debt Instrument Face Amount Current
DebtInstrumentFaceAmountCurrent
|
0 | USD |
| CY2017Q4 | eqt |
Debt Instrument Face Amount Current
DebtInstrumentFaceAmountCurrent
|
8000000 | USD |
| CY2016Q4 | eqt |
Debt Instrument Face Amount Noncurrent
DebtInstrumentFaceAmountNoncurrent
|
3318200000 | USD |
| CY2017Q4 | eqt |
Debt Instrument Face Amount Noncurrent
DebtInstrumentFaceAmountNoncurrent
|
5610200000 | USD |
| CY2015 | eqt |
Deferred Income Tax Expense Benefit Continuing And Discontinued Operations
DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations
|
17876000 | USD |
| CY2016 | eqt |
Deferred Income Tax Expense Benefit Continuing And Discontinued Operations
DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations
|
-180261000 | USD |
| CY2017 | eqt |
Deferred Income Tax Expense Benefit Continuing And Discontinued Operations
DeferredIncomeTaxExpenseBenefitContinuingAndDiscontinuedOperations
|
-1050612000 | USD |
| CY2016 | eqt |
Deferred Tax Assets Decrease Resultingfrom Uncertain Tax Positions
DeferredTaxAssetsDecreaseResultingfromUncertainTaxPositions
|
500000 | USD |
| CY2017 | eqt |
Deferred Tax Assets Decrease Resultingfrom Uncertain Tax Positions
DeferredTaxAssetsDecreaseResultingfromUncertainTaxPositions
|
300000 | USD |
| CY2016Q4 | eqt |
Deferred Tax Liabilities Deferred Expense Capitalized Drilling And Development Costs
DeferredTaxLiabilitiesDeferredExpenseCapitalizedDrillingAndDevelopmentCosts
|
1473355000 | USD |
| CY2017Q4 | eqt |
Deferred Tax Liabilities Deferred Expense Capitalized Drilling And Development Costs
DeferredTaxLiabilitiesDeferredExpenseCapitalizedDrillingAndDevelopmentCosts
|
2074091000 | USD |
| CY2016Q4 | eqt |
Deferred Tax Liabilities Unrealized Gains Losseson Trading Securities
DeferredTaxLiabilitiesUnrealizedGainsLossesonTradingSecurities
|
-101430000 | USD |
| CY2017Q4 | eqt |
Deferred Tax Liabilities Unrealized Gains Losseson Trading Securities
DeferredTaxLiabilitiesUnrealizedGainsLossesonTradingSecurities
|
21403000 | USD |
| CY2015 | eqt |
Depreciation Depletion And Amortization Continuing And Discontinued Operations
DepreciationDepletionAndAmortizationContinuingAndDiscontinuedOperations
|
819216000 | USD |
| CY2016 | eqt |
Depreciation Depletion And Amortization Continuing And Discontinued Operations
DepreciationDepletionAndAmortizationContinuingAndDiscontinuedOperations
|
927920000 | USD |
| CY2017 | eqt |
Depreciation Depletion And Amortization Continuing And Discontinued Operations
DepreciationDepletionAndAmortizationContinuingAndDiscontinuedOperations
|
1077559000 | USD |
| CY2017 | eqt |
Development Commitment Amount Funded
DevelopmentCommitmentAmountFunded
|
9700000 | USD |
| CY2017 | eqt |
Development Commitment Priceper1000 Gallonsof Water
DevelopmentCommitmentPriceper1000GallonsofWater
|
3.50 | USD |
| CY2017Q4 | eqt |
Development Commitment Total Amount Authorized
DevelopmentCommitmentTotalAmountAuthorized
|
29500000 | USD |
| CY2017Q4 | eqt |
Discount Rate To Compute Standard Measure Of Future Cash Flow
DiscountRateToComputeStandardMeasureOfFutureCashFlow
|
0.1 | |
| CY2017 | eqt |
Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Change In Price Of Natural Gas Sensitivity
DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesChangeInPriceOfNaturalGasSensitivity
|
0.2 | |
| CY2017 | eqt |
Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves Change In Price Of Oil Sensitivity
DiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReservesChangeInPriceOfOilSensitivity
|
10 | |
| CY2017 | eqt |
Discounted Future Net Cash Flows Relatingto Proved Oiland Gas Reserves Changein Priceof Natural Gas Liquids
DiscountedFutureNetCashFlowsRelatingtoProvedOilandGasReservesChangeinPriceofNaturalGasLiquids
|
10 | |
| CY2017Q4 | eqt |
Distribution Madeto General Partner Cash Distributions Declared
DistributionMadetoGeneralPartnerCashDistributionsDeclared
|
3000000 | USD |
| CY2017Q4 | eqt |
Distribution Madeto Limited Partnerand General Partner Cash Distributions Declared
DistributionMadetoLimitedPartnerandGeneralPartnerCashDistributionsDeclared
|
11400000 | USD |
| CY2016 | eqt |
Eliminationof Net Deferred Taxes
EliminationofNetDeferredTaxes
|
5921000 | USD |
| CY2017 | eqt |
Engineer Experience In Years
EngineerExperienceInYears
|
P29Y | |
| CY2017 | eqt |
Fair Value Forward Price Curve Period
FairValueForwardPriceCurvePeriod
|
P5Y | |
| CY2015 | eqt |
Gain Losson Saleof Property Continuingand Discontinued Operations
GainLossonSaleofPropertyContinuingandDiscontinuedOperations
|
0 | USD |
| CY2016 | eqt |
Gain Losson Saleof Property Continuingand Discontinued Operations
GainLossonSaleofPropertyContinuingandDiscontinuedOperations
|
0 | USD |
| CY2017 | eqt |
Income Tax Expensefrom Government Regulated Asset
IncomeTaxExpensefromGovernmentRegulatedAsset
|
10500000 | USD |
| CY2017 | eqt |
Gain Losson Saleof Property Continuingand Discontinued Operations
GainLossonSaleofPropertyContinuingandDiscontinuedOperations
|
-12641000 | USD |
| CY2017 | eqt |
Gas And Liquid Carbon Proved Reserves Reviewed Percentage
GasAndLiquidCarbonProvedReservesReviewedPercentage
|
1 | |
| CY2016Q4 | eqt |
Incentive Compensation Liability Current
IncentiveCompensationLiabilityCurrent
|
100762000 | USD |
| CY2017Q4 | eqt |
Incentive Compensation Liability Current
IncentiveCompensationLiabilityCurrent
|
91363000 | USD |
| CY2016 | eqt |
Increase Decreasein Investmentor Payablefor Capital Contributions
IncreaseDecreaseinInvestmentorPayableforCapitalContributions
|
11500000 | USD |
| CY2016Q4 | eqt |
Longterm Debt Fair Value Current
LongtermDebtFairValueCurrent
|
0 | USD |
| CY2017Q4 | eqt |
Longterm Debt Fair Value Current
LongtermDebtFairValueCurrent
|
8012000 | USD |
| CY2016Q4 | eqt |
Longterm Debt Fair Value Noncurrent
LongtermDebtFairValueNoncurrent
|
3510217000 | USD |
| CY2017Q4 | eqt |
Longterm Debt Fair Value Noncurrent
LongtermDebtFairValueNoncurrent
|
5737918000 | USD |
| CY2017 | eqt |
Maximum Additional Collateral As Percentage Of Derivative Liability
MaximumAdditionalCollateralAsPercentageOfDerivativeLiability
|
1 | |
| CY2017 | eqt |
Maximum Term Of Original Maturity To Classify Investment As Cash Equivalents
MaximumTermOfOriginalMaturityToClassifyInvestmentAsCashEquivalents
|
P3M | |
| CY2015 | eqt |
Numberof Dry Holes Drilled
NumberofDryHolesDrilled
|
1 | dry_hole |
| CY2017 | eqt |
Numberof Dry Holes Drilled
NumberofDryHolesDrilled
|
1 | dry_hole |
| CY2015 | eqt |
Oil And Gas Property Successful Effort Method Average Depletion Rate
OilAndGasPropertySuccessfulEffortMethodAverageDepletionRate
|
1.18 | |
| CY2016 | eqt |
Oil And Gas Property Successful Effort Method Average Depletion Rate
OilAndGasPropertySuccessfulEffortMethodAverageDepletionRate
|
1.06 | |
| CY2017 | eqt |
Oil And Gas Property Successful Effort Method Average Depletion Rate
OilAndGasPropertySuccessfulEffortMethodAverageDepletionRate
|
1.04 | |
| CY2015Q4 | eqt |
Oil And Gas Property Successful Effort Method Internal Costs
OilAndGasPropertySuccessfulEffortMethodInternalCosts
|
114400000 | USD |
| CY2016Q4 | eqt |
Oil And Gas Property Successful Effort Method Internal Costs
OilAndGasPropertySuccessfulEffortMethodInternalCosts
|
115400000 | USD |
| CY2017Q4 | eqt |
Oil And Gas Property Successful Effort Method Internal Costs
OilAndGasPropertySuccessfulEffortMethodInternalCosts
|
114600000 | USD |
| CY2015 | eqt |
Other Comprehensive Income Derivatives Qualifying As Hedges Interest Rate Tax
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesInterestRateTax
|
100000 | USD |
| CY2016 | eqt |
Other Comprehensive Income Derivatives Qualifying As Hedges Interest Rate Tax
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesInterestRateTax
|
104000 | USD |
| CY2017 | eqt |
Other Comprehensive Income Derivatives Qualifying As Hedges Interest Rate Tax
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesInterestRateTax
|
105000 | USD |
| CY2015 | eqt |
Other Comprehensive Income Derivatives Qualifying As Hedges Period Increase Decrease Net Of Tax Interest Rate
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesPeriodIncreaseDecreaseNetOfTaxInterestRate
|
144000 | USD |
| CY2016 | eqt |
Other Comprehensive Income Derivatives Qualifying As Hedges Period Increase Decrease Net Of Tax Interest Rate
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesPeriodIncreaseDecreaseNetOfTaxInterestRate
|
144000 | USD |
| CY2017 | eqt |
Other Comprehensive Income Derivatives Qualifying As Hedges Period Increase Decrease Net Of Tax Interest Rate
OtherComprehensiveIncomeDerivativesQualifyingAsHedgesPeriodIncreaseDecreaseNetOfTaxInterestRate
|
144000 | USD |
| CY2015 | eqt |
Paymentsfor Dry Hole Costs
PaymentsforDryHoleCosts
|
17130000 | USD |
| CY2016 | eqt |
Paymentsfor Dry Hole Costs
PaymentsforDryHoleCosts
|
1369000 | USD |
| CY2016 | eqt |
Proceeds From Payments For Cash Settlementson Derivatives Not Designatedas Hedges
ProceedsFromPaymentsForCashSettlementsonDerivativesNotDesignatedasHedges
|
279425000 | USD |
| CY2017 | eqt |
Paymentsfor Dry Hole Costs
PaymentsforDryHoleCosts
|
11420000 | USD |
| CY2015 | eqt |
Proceeds From Payments For Cash Settlementson Derivatives Not Designatedas Hedges
ProceedsFromPaymentsForCashSettlementsonDerivativesNotDesignatedasHedges
|
172093000 | USD |
| CY2017 | eqt |
Proceeds From Payments For Cash Settlementson Derivatives Not Designatedas Hedges
ProceedsFromPaymentsForCashSettlementsonDerivativesNotDesignatedasHedges
|
40728000 | USD |
| CY2016 | eqt |
Proved Developedand Undeveloped Reserve Acquisitions Developed Energy
ProvedDevelopedandUndevelopedReserveAcquisitionsDevelopedEnergy
|
320 | Bcfe |
| CY2017 | eqt |
Proved Developedand Undeveloped Reserve Acquisitions Developed Energy
ProvedDevelopedandUndevelopedReserveAcquisitionsDevelopedEnergy
|
3330 | Bcfe |
| CY2016 | eqt |
Proved Developedand Undeveloped Reserve Acquisitions Energy
ProvedDevelopedandUndevelopedReserveAcquisitionsEnergy
|
2396 | Bcfe |
| CY2017 | eqt |
Proved Developedand Undeveloped Reserve Acquisitions Energy
ProvedDevelopedandUndevelopedReserveAcquisitionsEnergy
|
9390 | Bcfe |
| CY2016 | eqt |
Proved Developedand Undeveloped Reserve Acquisitions Undeveloped Energy
ProvedDevelopedandUndevelopedReserveAcquisitionsUndevelopedEnergy
|
2076 | Bcfe |
| CY2017 | eqt |
Proved Developedand Undeveloped Reserve Acquisitions Undeveloped Energy
ProvedDevelopedandUndevelopedReserveAcquisitionsUndevelopedEnergy
|
6060 | Bcfe |
| CY2015 | eqt |
Proved Developedand Undeveloped Reserve Changein Economic Life Energy
ProvedDevelopedandUndevelopedReserveChangeinEconomicLifeEnergy
|
-259 | Bcfe |
| CY2016 | eqt |
Proved Developedand Undeveloped Reserve Changein Economic Life Energy
ProvedDevelopedandUndevelopedReserveChangeinEconomicLifeEnergy
|
-31 | Bcfe |
| CY2017 | eqt |
Proved Developedand Undeveloped Reserve Changein Economic Life Energy
ProvedDevelopedandUndevelopedReserveChangeinEconomicLifeEnergy
|
-278 | Bcfe |
| CY2016 | eqt |
Proved Developedand Undeveloped Reserve Removalof Locations Economicand Lackof Development Energy
ProvedDevelopedandUndevelopedReserveRemovalofLocationsEconomicandLackofDevelopmentEnergy
|
509 | Bcfe |
| CY2017 | eqt |
Proved Developedand Undeveloped Reserve Removalof Locations Economicand Lackof Development Energy
ProvedDevelopedandUndevelopedReserveRemovalofLocationsEconomicandLackofDevelopmentEnergy
|
3522 | Bcfe |
| CY2015 | eqt |
Proved Developedand Undeveloped Reserve Removalof Locations Energy
ProvedDevelopedandUndevelopedReserveRemovalofLocationsEnergy
|
2321 | Bcfe |
| CY2015 | eqt |
Proved Developedand Undeveloped Reserve Removalof Locations Not Expectedto Developwithin5 Years Energy
ProvedDevelopedandUndevelopedReserveRemovalofLocationsNotExpectedtoDevelopwithin5YearsEnergy
|
342 | Bcfe |
| CY2016 | eqt |
Proved Developedand Undeveloped Reserve Removalof Locations Not Expectedto Developwithin5 Years Energy
ProvedDevelopedandUndevelopedReserveRemovalofLocationsNotExpectedtoDevelopwithin5YearsEnergy
|
389 | Bcfe |
| CY2017 | eqt |
Proved Developedand Undeveloped Reserve Removalof Locations Not Expectedto Developwithin5 Years Energy
ProvedDevelopedandUndevelopedReserveRemovalofLocationsNotExpectedtoDevelopwithin5YearsEnergy
|
3074 | Bcfe |
| CY2015 | eqt |
Proved Developedand Undeveloped Reserve Transfers Energy
ProvedDevelopedandUndevelopedReserveTransfersEnergy
|
1528 | Bcfe |
| CY2016 | eqt |
Proved Developedand Undeveloped Reserve Transfers Energy
ProvedDevelopedandUndevelopedReserveTransfersEnergy
|
647 | Bcfe |
| CY2017 | eqt |
Proved Developedand Undeveloped Reserve Transfers Energy
ProvedDevelopedandUndevelopedReserveTransfersEnergy
|
987 | Bcfe |
| CY2017Q4 | eqt |
Reserved Authorized And Unissued Common Stock Compensation Plans
ReservedAuthorizedAndUnissuedCommonStockCompensationPlans
|
14261000 | shares |
| CY2017Q4 | eqt |
Reserved Authorized And Unissued Common Stock Possible Future Acquisitions
ReservedAuthorizedAndUnissuedCommonStockPossibleFutureAcquisitions
|
20457000 | shares |
| CY2015 | eqt |
Resultsof Operations Impairmentof Oiland Gas Properties Unproved Properties
ResultsofOperationsImpairmentofOilandGasPropertiesUnprovedProperties
|
19700000 | USD |
| CY2017 | eqt |
Resultsof Operations Impairmentof Oiland Gas Properties Unproved Properties
ResultsofOperationsImpairmentofOilandGasPropertiesUnprovedProperties
|
0 | USD |
| CY2016 | eqt |
Resultsof Operations Impairmentof Oiland Gas Properties Unproved Properties
ResultsofOperationsImpairmentofOilandGasPropertiesUnprovedProperties
|
6900000 | USD |
| CY2015Q4 | eqt |
Stock Repurchase Program Authorized Amount Shares
StockRepurchaseProgramAuthorizedAmountShares
|
17000000 | shares |
| CY2016 | eqt |
Tax Benefits Recognized Addition To Common Stockholders Equity
TaxBenefitsRecognizedAdditionToCommonStockholdersEquity
|
900000 | USD |
| CY2017Q4 | eqt |
Tax Cuts And Jobs Act Of2017 Regulated Entity Change In Tax Rate Liability
TaxCutsAndJobsActOf2017RegulatedEntityChangeInTaxRateLiability
|
11300000 | USD |
| CY2016Q4 | eqt |
Treasury Stock Shares Heldin Trust
TreasuryStockSharesHeldinTrust
|
226000 | shares |
| CY2017Q4 | eqt |
Treasury Stock Shares Heldin Trust
TreasuryStockSharesHeldinTrust
|
253000 | shares |
| CY2017Q4 | eqt |
Unrecognized Tax Benefit Threshold Percentage
UnrecognizedTaxBenefitThresholdPercentage
|
0.5 | |
| CY2015 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
54700000 | USD |
| CY2016 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
66000000 | USD |
| CY2017 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
128400000 | USD |
| CY2016Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
6923000 | USD |
| CY2016 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
0 | USD |
| CY2017 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
10940000 | USD |
| CY2015 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
291700 | shares |
| CY2017 | us-gaap |
Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount
AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
|
429785 | shares |
| CY2015 | us-gaap |
Asset Impairment Charges
AssetImpairmentCharges
|
4200000 | USD |
| CY2017 | us-gaap |
Asset Impairment Charges
AssetImpairmentCharges
|
0 | USD |
| CY2015Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
168142000 | USD |
| CY2016Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
243600000 | USD |
| CY2017Q4 | us-gaap |
Asset Retirement Obligation
AssetRetirementObligation
|
452670000 | USD |
| CY2017Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable Current
AllowanceForDoubtfulAccountsReceivableCurrent
|
8226000 | USD |
| CY2015 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
0 | USD |
| CY2016 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
9696000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Accretion Expense
AssetRetirementObligationAccretionExpense
|
13679000 | USD |
| CY2016 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
2943000 | USD |
| CY2016 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
64303000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Liabilities Incurred
AssetRetirementObligationLiabilitiesIncurred
|
19678000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Revision Of Estimate
AssetRetirementObligationRevisionOfEstimate
|
128610000 | USD |
| CY2015Q4 | us-gaap |
Assets
Assets
|
13976172000 | USD |
| CY2016 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
1484000 | USD |
| CY2017 | us-gaap |
Asset Retirement Obligation Liabilities Settled
AssetRetirementObligationLiabilitiesSettled
|
3838000 | USD |
| CY2015 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
127518000 | USD |
| CY2017Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
2740084000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Equity Method Investments
DeferredTaxAssetsEquityMethodInvestments
|
386676000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Equity Method Investments
DeferredTaxAssetsEquityMethodInvestments
|
132667000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
875303000 | USD |
| CY2016 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
-63106000 | USD |
| CY2017 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
-52129000 | USD |
| CY2014Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
1077429000 | USD |
| CY2015Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
1601232000 | USD |
| CY2016Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
1103540000 | USD |
| CY2016Q4 | us-gaap |
Assets Current
AssetsCurrent
|
1828219000 | USD |
| CY2017Q4 | us-gaap |
Assets Current
AssetsCurrent
|
1163055000 | USD |
| CY2015 | us-gaap |
Business Combination Acquisition Related Costs
BusinessCombinationAcquisitionRelatedCosts
|
0 | USD |
| CY2016 | us-gaap |
Business Combination Acquisition Related Costs
BusinessCombinationAcquisitionRelatedCosts
|
0 | USD |
| CY2017 | us-gaap |
Business Combination Acquisition Related Costs
BusinessCombinationAcquisitionRelatedCosts
|
237312000 | USD |
| CY2015 | us-gaap |
Business Combination Provisional Information Initial Accounting Incomplete Adjustment Property Plant And Equipment
BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment
|
-114800000 | USD |
| CY2016 | us-gaap |
Business Combination Provisional Information Initial Accounting Incomplete Adjustment Property Plant And Equipment
BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment
|
-27700000 | USD |
| CY2017 | us-gaap |
Business Combination Provisional Information Initial Accounting Incomplete Adjustment Property Plant And Equipment
BusinessCombinationProvisionalInformationInitialAccountingIncompleteAdjustmentPropertyPlantAndEquipment
|
4400000 | USD |
| CY2015Q4 | us-gaap |
Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities
CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities
|
3425618000 | USD |
| CY2016Q4 | us-gaap |
Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities
CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities
|
4217154000 | USD |
| CY2017Q4 | us-gaap |
Capitalized Costs Accumulated Depreciation Depletion Amortization And Valuation Allowance For Relating To Oil And Gas Producing Activities
CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities
|
5121646000 | USD |
| CY2015Q4 | us-gaap |
Capitalized Costs Oil And Gas Producing Activities Gross
CapitalizedCostsOilAndGasProducingActivitiesGross
|
11816769000 | USD |
| CY2016Q4 | us-gaap |
Capitalized Costs Oil And Gas Producing Activities Gross
CapitalizedCostsOilAndGasProducingActivitiesGross
|
13878659000 | USD |
| CY2017Q4 | us-gaap |
Capitalized Costs Oil And Gas Producing Activities Gross
CapitalizedCostsOilAndGasProducingActivitiesGross
|
23937154000 | USD |
| CY2015Q4 | us-gaap |
Capitalized Costs Oil And Gas Producing Activities Net
CapitalizedCostsOilAndGasProducingActivitiesNet
|
8391151000 | USD |
| CY2016Q4 | us-gaap |
Capitalized Costs Oil And Gas Producing Activities Net
CapitalizedCostsOilAndGasProducingActivitiesNet
|
9661505000 | USD |
| CY2017Q4 | us-gaap |
Capitalized Costs Oil And Gas Producing Activities Net
CapitalizedCostsOilAndGasProducingActivitiesNet
|
18815508000 | USD |
| CY2015Q4 | us-gaap |
Capitalized Costs Proved Properties
CapitalizedCostsProvedProperties
|
10918499000 | USD |
| CY2016Q4 | us-gaap |
Capitalized Costs Proved Properties
CapitalizedCostsProvedProperties
|
12179833000 | USD |
| CY2017Q4 | us-gaap |
Capitalized Costs Proved Properties
CapitalizedCostsProvedProperties
|
18920855000 | USD |
| CY2015Q4 | us-gaap |
Capitalized Costs Unproved Properties
CapitalizedCostsUnprovedProperties
|
898270000 | USD |
| CY2016Q4 | us-gaap |
Capitalized Costs Unproved Properties
CapitalizedCostsUnprovedProperties
|
1698800000 | USD |
| CY2016Q4 | us-gaap |
Capitalized Costs Unproved Properties
CapitalizedCostsUnprovedProperties
|
1698826000 | USD |
| CY2017Q4 | us-gaap |
Capitalized Costs Unproved Properties
CapitalizedCostsUnprovedProperties
|
5016299000 | USD |
| CY2016Q4 | us-gaap |
Assets
Assets
|
15472922000 | USD |
| CY2017Q4 | us-gaap |
Assets
Assets
|
29522604000 | USD |
| CY2016Q4 | us-gaap |
Capitalized Exploratory Well Costs
CapitalizedExploratoryWellCosts
|
5100000.0 | USD |
| CY2017Q4 | us-gaap |
Capitalized Exploratory Well Costs
CapitalizedExploratoryWellCosts
|
0 | USD |
| CY2016Q4 | us-gaap |
Derivative Fair Value Of Derivative Liability
DerivativeFairValueOfDerivativeLiability
|
257943000 | USD |
| CY2017Q4 | us-gaap |
Derivative Fair Value Of Derivative Liability
DerivativeFairValueOfDerivativeLiability
|
139089000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
-7376000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
1161952000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
644590000 | USD |
| CY2016 | us-gaap |
Defined Benefit Plan Amortization Of Transition Asset Obligation
DefinedBenefitPlanAmortizationOfTransitionAssetObligation
|
-5100000 | USD |
| CY2016Q2 | us-gaap |
Defined Benefit Plan Benefit Obligation Benefits Paid
DefinedBenefitPlanBenefitObligationBenefitsPaid
|
5400000 | USD |
| CY2016Q4 | us-gaap |
Defined Benefit Plan Expected Amortization Of Gain Loss Next Fiscal Year
DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear
|
-9400000 | USD |
| CY2015 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
15700000 | USD |
| CY2016 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
16000000 | USD |
| CY2017 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
16600000 | USD |
| CY2015 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
819216000 | USD |
| CY2016 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
927920000 | USD |
| CY2017 | us-gaap |
Depreciation Depletion And Amortization
DepreciationDepletionAndAmortization
|
1077559000 | USD |
| CY2016Q4 | us-gaap |
Derivative Fair Value Of Derivative Asset
DerivativeFairValueOfDerivativeAsset
|
33053000 | USD |
| CY2017Q4 | us-gaap |
Derivative Fair Value Of Derivative Asset
DerivativeFairValueOfDerivativeAsset
|
241952000 | USD |
| CY2016 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
-497319000 | USD |
| CY2017 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
1504029000 | USD |
| CY2017Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
267871000 | shares |
| CY2015 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
168770000 | USD |
| CY2016 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
-175399000 | USD |
| CY2017 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
1853642000 | USD |
| CY2016Q4 | us-gaap |
Common Stock Value Outstanding
CommonStockValueOutstanding
|
3440185000 | USD |
| CY2017Q4 | us-gaap |
Common Stock Value Outstanding
CommonStockValueOutstanding
|
9388903000 | USD |
| CY2015 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
-67945000 | USD |
| CY2017Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
147315000 | USD |
| CY2015 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
523803000 | USD |
| CY2016 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
-497692000 | USD |
| CY2017 | us-gaap |
Cash And Cash Equivalents Period Increase Decrease
CashAndCashEquivalentsPeriodIncreaseDecrease
|
-956225000 | USD |
| CY2017Q4 | us-gaap |
Collateral Already Posted Aggregate Fair Value
CollateralAlreadyPostedAggregateFairValue
|
0 | USD |
| CY2017Q4 | us-gaap |
Common Stock Capital Shares Reserved For Future Issuance
CommonStockCapitalSharesReservedForFutureIssuance
|
34718000 | shares |
| CY2015 | us-gaap |
Common Stock Dividends Per Share Cash Paid
CommonStockDividendsPerShareCashPaid
|
0.12 | |
| CY2016 | us-gaap |
Common Stock Dividends Per Share Cash Paid
CommonStockDividendsPerShareCashPaid
|
0.12 | |
| CY2017 | us-gaap |
Common Stock Dividends Per Share Cash Paid
CommonStockDividendsPerShareCashPaid
|
0.12 | |
| CY2016Q4 | us-gaap |
Common Stock No Par Value
CommonStockNoParValue
|
0 | |
| CY2017Q4 | us-gaap |
Common Stock No Par Value
CommonStockNoParValue
|
0 | |
| CY2015Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
320000000 | shares |
| CY2016Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
320000000 | shares |
| CY2016Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
320000000 | shares |
| CY2017Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
320000000 | shares |
| CY2017Q4 | us-gaap |
Common Stock Shares Authorized
CommonStockSharesAuthorized
|
320000000 | shares |
| CY2016Q4 | us-gaap |
Common Stock Shares Issued
CommonStockSharesIssued
|
177896000 | shares |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
564180000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards State And Local
DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal
|
81500000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Regulatory Assets And Liabilities
DeferredTaxAssetsRegulatoryAssetsAndLiabilities
|
20300000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Regulatory Assets And Liabilities
DeferredTaxAssetsRegulatoryAssetsAndLiabilities
|
17700000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards
DeferredTaxAssetsTaxCreditCarryforwards
|
2508000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
971184000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
282943000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther
|
43822000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards
DeferredTaxAssetsTaxCreditCarryforwards
|
50341000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax
DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax
|
224428000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax
DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax
|
435000000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Tax Credit Carryforwards Alternative Minimum Tax
DeferredTaxAssetsTaxCreditCarryforwardsAlternativeMinimumTax
|
435190000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Other
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsOther
|
77743000 | USD |
| CY2015 | us-gaap |
Costs Incurred Exploration Costs
CostsIncurredExplorationCosts
|
53463000 | USD |
| CY2016 | us-gaap |
Costs Incurred Exploration Costs
CostsIncurredExplorationCosts
|
6047000 | USD |
| CY2016 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
1894673000 | USD |
| CY2017 | us-gaap |
Costs Incurred Exploration Costs
CostsIncurredExplorationCosts
|
15505000 | USD |
| CY2015 | us-gaap |
Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities
CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities
|
0 | USD |
| CY2017 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
2445034000 | USD |
| CY2015 | us-gaap |
Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves
CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves
|
23890000 | USD |
| CY2016 | us-gaap |
Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves
CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves
|
403314000 | USD |
| CY2017 | us-gaap |
Costs Incurred Acquisition Of Oil And Gas Properties With Proved Reserves
CostsIncurredAcquisitionOfOilAndGasPropertiesWithProvedReserves
|
5251711000 | USD |
| CY2015 | us-gaap |
Costs Incurred Acquisition Of Unproved Oil And Gas Properties
CostsIncurredAcquisitionOfUnprovedOilAndGasProperties
|
158405000 | USD |
| CY2016 | us-gaap |
Costs Incurred Acquisition Of Unproved Oil And Gas Properties
CostsIncurredAcquisitionOfUnprovedOilAndGasProperties
|
880545000 | USD |
| CY2017 | us-gaap |
Costs Incurred Acquisition Of Unproved Oil And Gas Properties
CostsIncurredAcquisitionOfUnprovedOilAndGasProperties
|
3310995000 | USD |
| CY2015 | us-gaap |
Costs Incurred Development Costs
CostsIncurredDevelopmentCosts
|
1633498000 | USD |
| CY2016 | us-gaap |
Costs Incurred Development Costs
CostsIncurredDevelopmentCosts
|
777787000 | USD |
| CY2017 | us-gaap |
Costs Incurred Development Costs
CostsIncurredDevelopmentCosts
|
1365615000 | USD |
| CY2015 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
1776623000 | USD |
| CY2016 | us-gaap |
Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities
CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities
|
0 | USD |
| CY2017 | us-gaap |
Costs Incurred Oil And Gas Property Acquisition Exploration And Development Activities
CostsIncurredOilAndGasPropertyAcquisitionExplorationAndDevelopmentActivities
|
0 | USD |
| CY2015 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
85696000 | USD |
| CY2016 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
-82905000 | USD |
| CY2017 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
-65034000 | USD |
| CY2015 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
86799000 | USD |
| CY2016 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
-83203000 | USD |
| CY2017 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
-65007000 | USD |
| CY2015 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
1103000 | USD |
| CY2016 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
-298000 | USD |
| CY2017 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
27000 | USD |
| CY2016Q4 | us-gaap |
Debt Instrument Face Amount
DebtInstrumentFaceAmount
|
3318200000 | USD |
| CY2017Q4 | us-gaap |
Debt Instrument Face Amount
DebtInstrumentFaceAmount
|
5618200000 | USD |
| CY2015 | us-gaap |
Decrease Due To Sales Of Minerals In Place
DecreaseDueToSalesOfMineralsInPlace
|
43000 | USD |
| CY2016 | us-gaap |
Decrease Due To Sales Of Minerals In Place
DecreaseDueToSalesOfMineralsInPlace
|
0 | USD |
| CY2017 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-1050612000 | USD |
| CY2017 | us-gaap |
Decrease Due To Sales Of Minerals In Place
DecreaseDueToSalesOfMineralsInPlace
|
284000 | USD |
| CY2017Q4 | us-gaap |
Decrease In Unrecognized Tax Benefits Is Reasonably Possible
DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
|
42500000 | USD |
| CY2016Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
1558582000 | USD |
| CY2015 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
-109642000 | USD |
| CY2016 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
-117155000 | USD |
| CY2017 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
-998483000 | USD |
| CY2015 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
17876000 | USD |
| CY2016 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-180261000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
1768900000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Liabilities Other
DeferredTaxLiabilitiesOther
|
-997000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
201422000 | USD |
| CY2017Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
262392000 | USD |
| CY2016Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
1760004000 | USD |
| CY2016Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
2635307000 | USD |
| CY2017Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
1506508000 | USD |
| CY2017 | us-gaap |
Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
|
390021000 | USD |
| CY2017Q4 | us-gaap |
Derivative Net Liability Position Aggregate Fair Value
DerivativeNetLiabilityPositionAggregateFairValue
|
60800000 | USD |
| CY2017Q4 | us-gaap |
Distribution Made To Limited Partner Cash Distributions Declared
DistributionMadeToLimitedPartnerCashDistributionsDeclared
|
8400000 | USD |
| CY2016Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
-1.55 | |
| CY2016Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
-0.05 | |
| CY2017Q4 | us-gaap |
Distribution Made To Limited Partner Distributions Declared Per Unit
DistributionMadeToLimitedPartnerDistributionsDeclaredPerUnit
|
0.2917 | |
| CY2015 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
18310000 | USD |
| CY2016 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
20156000 | USD |
| CY2016Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
-1.11 | |
| CY2016 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
-2.71 | |
| CY2017Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.95 | |
| CY2017 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
20827000 | USD |
| CY2016Q4 | us-gaap |
Due To Related Parties Current
DueToRelatedPartiesCurrent
|
11471000 | USD |
| CY2017Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.24 | |
| CY2017Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.13 | |
| CY2017Q4 | us-gaap |
Due To Related Parties Current
DueToRelatedPartiesCurrent
|
105734000 | USD |
| CY2015 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.56 | |
| CY2016Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.04 | |
| CY2015 | us-gaap |
Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
|
385762000 | USD |
| CY2016 | us-gaap |
Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net
DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
|
-248991000 | USD |
| CY2017Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
5.85 | |
| CY2017 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
8.05 | |
| CY2015 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.56 | |
| CY2016Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.04 | |
| CY2016Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
-1.55 | |
| CY2016Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
-0.05 | |
| CY2016Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
-1.11 | |
| CY2016 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
-2.71 | |
| CY2017Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.95 | |
| CY2017Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.24 | |
| CY2017Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.13 | |
| CY2017Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
5.83 | |
| CY2017 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
8.04 | |
| CY2015 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.245 | |
| CY2016 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
0.668 | |
| CY2017 | us-gaap |
Effective Income Tax Rate Continuing Operations
EffectiveIncomeTaxRateContinuingOperations
|
-1.502 | |
| 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 | |
| CY2015 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options
EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions
|
43100000 | USD |
| CY2016 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options
EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions
|
22200000 | USD |
| CY2017 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Exercise Of Stock Options
EmployeeServiceShareBasedCompensationTaxBenefitFromExerciseOfStockOptions
|
58900000 | USD |
| CY2016Q4 | us-gaap |
Equity Method Investments
EquityMethodInvestments
|
184562000 | USD |
| CY2017Q4 | us-gaap |
Equity Method Investments
EquityMethodInvestments
|
460546000 | USD |
| CY2015 | us-gaap |
Excess Tax Benefit From Share Based Compensation Operating Activities
ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
|
22945000 | USD |
| CY2016 | us-gaap |
Excess Tax Benefit From Share Based Compensation Operating Activities
ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
|
1148000 | USD |
| CY2017 | us-gaap |
Excess Tax Benefit From Share Based Compensation Operating Activities
ExcessTaxBenefitFromShareBasedCompensationOperatingActivities
|
0 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows
|
17619037000 | USD |
| CY2016Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows
|
24011281000 | USD |
| CY2017Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Cash Inflows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesCashInflows
|
51423920000 | USD |
| CY2017Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Next Twelve Months
FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
|
82900000 | USD |
| CY2017Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
|
41500000 | USD |
| CY2017Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Three
FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
|
77500000 | USD |
| CY2017Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Two
FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
|
82900000 | USD |
| CY2017Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
736360000 | USD |
| CY2017Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Four
FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
|
41500000 | USD |
| CY2015 | us-gaap |
Exploration Abandonment And Impairment Expense
ExplorationAbandonmentAndImpairmentExpense
|
37400000 | USD |
| CY2016 | us-gaap |
Exploration Abandonment And Impairment Expense
ExplorationAbandonmentAndImpairmentExpense
|
8700000 | USD |
| CY2017 | us-gaap |
Exploration Abandonment And Impairment Expense
ExplorationAbandonmentAndImpairmentExpense
|
7600000 | USD |
| CY2015 | us-gaap |
Exploration Expense
ExplorationExpense
|
61970000 | USD |
| CY2016 | us-gaap |
Exploration Expense
ExplorationExpense
|
13410000 | USD |
| CY2017 | us-gaap |
Exploration Expense
ExplorationExpense
|
25117000 | USD |
| CY2015 | us-gaap |
Extensions Discoveries Additions And Improved Recovery Less Related Costs
ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts
|
264735000 | USD |
| CY2016 | us-gaap |
Extensions Discoveries Additions And Improved Recovery Less Related Costs
ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts
|
590885000 | USD |
| CY2017 | us-gaap |
Extensions Discoveries Additions And Improved Recovery Less Related Costs
ExtensionsDiscoveriesAdditionsAndImprovedRecoveryLessRelatedCosts
|
1269712000 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
|
2377650000 | USD |
| CY2016Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
|
3778698000 | USD |
| CY2017Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Development Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesDevelopmentCosts
|
5637676000 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense
FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense
|
1333989000 | USD |
| CY2016Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense
FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense
|
1753067000 | USD |
| CY2017Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Income Tax Expense
FutureNetCashFlowsRelatingToProvedOilAndGasReservesIncomeTaxExpense
|
5811125000 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows
|
2944113000 | USD |
| CY2016Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows
|
3615390000 | USD |
| CY2017Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Net Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesNetCashFlows
|
21595227000 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts
|
10963285000 | USD |
| CY2016Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts
|
14864126000 | USD |
| CY2017Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Production Costs
FutureNetCashFlowsRelatingToProvedOilAndGasReservesProductionCosts
|
18379892000 | USD |
| CY2015Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows
|
1966559000 | USD |
| CY2016Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows
|
2626636000 | USD |
| CY2017Q4 | us-gaap |
Future Net Cash Flows Relating To Proved Oil And Gas Reserves Ten Percent Annual Discount For Estimated Timing Of Cash Flows
FutureNetCashFlowsRelatingToProvedOilAndGasReservesTenPercentAnnualDiscountForEstimatedTimingOfCashFlows
|
12593293000 | USD |
| CY2015 | us-gaap |
Gain Loss On Price Risk Derivative Instruments Not Designated As Hedging Instruments
GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments
|
385762000 | USD |
| CY2016 | us-gaap |
Gain Loss On Price Risk Derivative Instruments Not Designated As Hedging Instruments
GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments
|
-248991000 | USD |
| CY2017 | us-gaap |
Gain Loss On Price Risk Derivative Instruments Not Designated As Hedging Instruments
GainLossOnPriceRiskDerivativeInstrumentsNotDesignatedAsHedgingInstruments
|
390021000 | USD |
| CY2015 | us-gaap |
Gain Loss On Sale Of Property
GainLossOnSaleOfProperty
|
0 | USD |
| CY2016 | us-gaap |
Gain Loss On Sale Of Property
GainLossOnSaleOfProperty
|
8025000 | USD |
| CY2017 | us-gaap |
Gain Loss On Sale Of Property
GainLossOnSaleOfProperty
|
0 | USD |
| CY2015 | us-gaap |
Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
|
0 | USD |
| CY2016 | us-gaap |
Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
|
8025000 | USD |
| CY2017 | us-gaap |
Gain Loss On Sale Of Property Plant Equipment
GainLossOnSaleOfPropertyPlantEquipment
|
0 | USD |
| CY2017Q4 | us-gaap |
Gains Losses On Extinguishment Of Debt
GainsLossesOnExtinguishmentOfDebt
|
-12600000 | USD |
| CY2015 | us-gaap |
Gains Losses On Extinguishment Of Debt
GainsLossesOnExtinguishmentOfDebt
|
0 | USD |
| CY2016 | us-gaap |
Gains Losses On Extinguishment Of Debt
GainsLossesOnExtinguishmentOfDebt
|
0 | USD |
| CY2017 | us-gaap |
Gains Losses On Extinguishment Of Debt
GainsLossesOnExtinguishmentOfDebt
|
-12641000 | USD |
| CY2015 | us-gaap |
Gas Gathering Transportation Marketing And Processing Costs
GasGatheringTransportationMarketingAndProcessingCosts
|
275348000 | USD |
| CY2016 | us-gaap |
Gas Gathering Transportation Marketing And Processing Costs
GasGatheringTransportationMarketingAndProcessingCosts
|
365817000 | USD |
| CY2017 | us-gaap |
Gas Gathering Transportation Marketing And Processing Costs
GasGatheringTransportationMarketingAndProcessingCosts
|
559839000 | USD |
| CY2015 | us-gaap |
Gas Gathering Transportation Marketing And Processing Revenue
GasGatheringTransportationMarketingAndProcessingRevenue
|
263640000 | USD |
| CY2016 | us-gaap |
Gas Gathering Transportation Marketing And Processing Revenue
GasGatheringTransportationMarketingAndProcessingRevenue
|
262342000 | USD |
| CY2017 | us-gaap |
Gas Gathering Transportation Marketing And Processing Revenue
GasGatheringTransportationMarketingAndProcessingRevenue
|
336676000 | USD |
| CY2016Q4 | us-gaap |
Goodwill
Goodwill
|
0 | USD |
| CY2017Q4 | us-gaap |
Goodwill
Goodwill
|
1998726000 | USD |
| CY2015 | us-gaap |
Impairment Of Oil And Gas Properties
ImpairmentOfOilAndGasProperties
|
122469000 | USD |
| CY2016 | us-gaap |
Impairment Of Oil And Gas Properties
ImpairmentOfOilAndGasProperties
|
66687000 | USD |
| CY2017 | us-gaap |
Impairment Of Oil And Gas Properties
ImpairmentOfOilAndGasProperties
|
0 | USD |
| CY2015 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
426561000 | USD |
| CY2016 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
-394527000 | USD |
| CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
742523000 | USD |
| CY2015 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
321886000 | USD |
| CY2016 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
-131063000 | USD |
| CY2017 | us-gaap |
Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest
IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest
|
1858142000 | USD |
| CY2015 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
104675000 | USD |
| CY2016 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-263464000 | USD |
| CY2017 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-1115619000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
91144000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
23808000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
10680000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
0 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
0 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
-1205140000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
-1200000000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Disposition Of Assets
IncomeTaxReconciliationDispositionOfAssets
|
-35438000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Disposition Of Assets
IncomeTaxReconciliationDispositionOfAssets
|
35438000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Disposition Of Assets
IncomeTaxReconciliationDispositionOfAssets
|
10488000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
149296000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
-138084000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
259884000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
-2668000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
4198000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
18396000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
-7566000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
-71613000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
-52606000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Tax Credits Research
IncomeTaxReconciliationTaxCreditsResearch
|
7243000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Tax Credits Research
IncomeTaxReconciliationTaxCreditsResearch
|
4539000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Tax Credits Research
IncomeTaxReconciliationTaxCreditsResearch
|
34956000 | USD |
| CY2015 | us-gaap |
Income Tax Reconciliation Tax Exempt Income
IncomeTaxReconciliationTaxExemptIncome
|
82850000 | USD |
| CY2016 | us-gaap |
Income Tax Reconciliation Tax Exempt Income
IncomeTaxReconciliationTaxExemptIncome
|
112672000 | USD |
| CY2017 | us-gaap |
Income Tax Reconciliation Tax Exempt Income
IncomeTaxReconciliationTaxExemptIncome
|
122365000 | USD |
| CY2015 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
95708000 | USD |
| CY2016 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
-41142000 | USD |
| CY2017 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
3637000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
-37623000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
40548000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Accounts Payable
IncreaseDecreaseInAccountsPayable
|
-16680000 | USD |
| CY2015Q1 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
73500000 | USD |
| us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
7400000 | USD | |
| CY2015Q4 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
31300000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Deferred Income Taxes
IncreaseDecreaseInDeferredIncomeTaxes
|
15000000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Estimated Future Development Costs
IncreaseDecreaseInEstimatedFutureDevelopmentCosts
|
971186000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Estimated Future Development Costs
IncreaseDecreaseInEstimatedFutureDevelopmentCosts
|
402891000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Estimated Future Development Costs
IncreaseDecreaseInEstimatedFutureDevelopmentCosts
|
712635000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves
IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves
|
2424200000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves
IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves
|
-91823000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Future Income Tax Expense Estimates On Future Cash Flows Related To Proved Oil And Gas Reserves
IncreaseDecreaseInFutureIncomeTaxExpenseEstimatesOnFutureCashFlowsRelatedToProvedOilAndGasReserves
|
-1477603000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Receivables
IncreaseDecreaseInReceivables
|
-131031000 | USD |
| CY2016 | us-gaap |
Increase Decrease In Receivables
IncreaseDecreaseInReceivables
|
165507000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Receivables
IncreaseDecreaseInReceivables
|
8979000 | USD |
| CY2015 | us-gaap |
Increase Decrease In Restricted Cash
IncreaseDecreaseInRestrictedCash
|
0 | USD |
| CY2016 | us-gaap |
Increase Decrease In Restricted Cash
IncreaseDecreaseInRestrictedCash
|
75000000 | USD |
| CY2017 | us-gaap |
Increase Decrease In Restricted Cash
IncreaseDecreaseInRestrictedCash
|
-75000000 | USD |
| CY2015 | us-gaap |
Increase Due To Purchases Of Minerals In Place
IncreaseDueToPurchasesOfMineralsInPlace
|
0 | USD |
| CY2016 | us-gaap |
Increase Due To Purchases Of Minerals In Place
IncreaseDueToPurchasesOfMineralsInPlace
|
592078000 | USD |
| CY2017 | us-gaap |
Increase Due To Purchases Of Minerals In Place
IncreaseDueToPurchasesOfMineralsInPlace
|
5357921000 | USD |
| CY2015 | us-gaap |
Incremental Common Shares Attributable To Share Based Payment Arrangements
IncrementalCommonSharesAttributableToShareBasedPaymentArrangements
|
541000 | shares |
| 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
|
347000 | shares |
| CY2016Q4 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
0 | USD |
| CY2017Q4 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
736360000 | USD |
| CY2015 | us-gaap |
Interest Costs Capitalized
InterestCostsCapitalized
|
35800000 | USD |
| CY2016 | us-gaap |
Interest Costs Capitalized
InterestCostsCapitalized
|
19200000 | USD |
| CY2017 | us-gaap |
Interest Costs Capitalized
InterestCostsCapitalized
|
20500000 | USD |
| CY2015 | us-gaap |
Interest Expense
InterestExpense
|
146531000 | USD |
| CY2016 | us-gaap |
Interest Expense
InterestExpense
|
147920000 | USD |
| CY2017 | us-gaap |
Interest Expense
InterestExpense
|
202772000 | USD |
| CY2015 | us-gaap |
Interest Paid Net
InterestPaidNet
|
147550000 | USD |
| CY2016 | us-gaap |
Interest Paid Net
InterestPaidNet
|
144657000 | USD |
| CY2017 | us-gaap |
Interest Paid Net
InterestPaidNet
|
189371000 | USD |
| CY2016Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
39593000 | USD |
| CY2017Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
52993000 | USD |
| CY2015 | us-gaap |
Inventory Write Down
InventoryWriteDown
|
0 | USD |
| CY2016 | us-gaap |
Inventory Write Down
InventoryWriteDown
|
0 | USD |
| CY2016Q3 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-8016000 | USD |
| CY2016Q4 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-191958000 | USD |
| CY2017 | us-gaap |
Inventory Write Down
InventoryWriteDown
|
0 | USD |
| CY2015 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
85200000 | USD |
| CY2016 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
44100000 | USD |
| CY2017 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
60800000 | USD |
| CY2016Q4 | us-gaap |
Liabilities
Liabilities
|
6353675000 | USD |
| CY2017Q4 | us-gaap |
Liabilities
Liabilities
|
11107991000 | USD |
| CY2016Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
15472922000 | USD |
| CY2017Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
29522604000 | USD |
| CY2016 | us-gaap |
Liabilities Assumed1
LiabilitiesAssumed1
|
87600000 | USD |
| CY2016Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
804640000 | USD |
| CY2017Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
1232237000 | USD |
| CY2016Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
3289459000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
5570554000 | USD |
| CY2016Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
0 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
7999000 | USD |
| CY2016Q4 | us-gaap |
Long Term Debt Fair Value
LongTermDebtFairValue
|
3510217000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Fair Value
LongTermDebtFairValue
|
5745930000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal After Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
|
2375000000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Next Twelve Months
LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
|
8000000.0 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
|
750000000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Four
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
|
774000000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Three
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
|
1011200000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Two
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
|
700000000 | USD |
| CY2016Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
3289459000 | USD |
| CY2017Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
5562555000 | USD |
| CY2016Q4 | us-gaap |
Long Term Line Of Credit
LongTermLineOfCredit
|
0 | USD |
| CY2017Q4 | us-gaap |
Long Term Line Of Credit
LongTermLineOfCredit
|
1761000000 | USD |
| CY2016Q4 | us-gaap |
Minority Interest
MinorityInterest
|
3258966000 | USD |
| CY2017Q4 | us-gaap |
Minority Interest
MinorityInterest
|
5094995000 | USD |
| CY2015 | us-gaap |
Minority Interest Decrease From Distributions To Noncontrolling Interest Holders
MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
|
121759000 | USD |
| CY2016 | us-gaap |
Minority Interest Decrease From Distributions To Noncontrolling Interest Holders
MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
|
189981000 | USD |
| CY2017 | us-gaap |
Minority Interest Decrease From Distributions To Noncontrolling Interest Holders
MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
|
236123000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
1832470000 | USD |
| CY2016 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
1399469000 | USD |
| CY2017 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
1533147000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-2525607000 | USD |
| CY2016 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-2961481000 | USD |
| CY2017 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-4127070000 | USD |
| CY2015 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
1216940000 | USD |
| CY2016 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
1064320000 | USD |
| CY2017 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
1637698000 | USD |
| CY2015 | us-gaap |
Net Income Loss
NetIncomeLoss
|
85171000 | USD |
| CY2016Q1 | us-gaap |
Net Income Loss
NetIncomeLoss
|
5636000 | USD |
| CY2016Q2 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-258645000 | USD |
| CY2016 | us-gaap |
Net Income Loss
NetIncomeLoss
|
-452983000 | USD |
| CY2017Q1 | us-gaap |
Net Income Loss
NetIncomeLoss
|
163992000 | USD |
| CY2017Q2 | us-gaap |
Net Income Loss
NetIncomeLoss
|
41126000 | USD |
| CY2017Q3 | us-gaap |
Net Income Loss
NetIncomeLoss
|
23340000 | USD |
| CY2017Q4 | us-gaap |
Net Income Loss
NetIncomeLoss
|
1280071000 | USD |
| CY2017 | us-gaap |
Net Income Loss
NetIncomeLoss
|
1508529000 | USD |
| CY2015 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
236715000 | USD |
| CY2016 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
321920000 | USD |
| CY2017 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
349613000 | USD |
| CY2015 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
85171000 | USD |
| CY2016 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
-452983000 | USD |
| CY2017 | us-gaap |
Net Income Loss Available To Common Stockholders Basic
NetIncomeLossAvailableToCommonStockholdersBasic
|
1508529000 | USD |
| CY2015 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
85171000 | USD |
| CY2016 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
-452983000 | USD |
| CY2017 | us-gaap |
Net Income Loss Available To Common Stockholders Diluted
NetIncomeLossAvailableToCommonStockholdersDiluted
|
1508529000 | USD |
| CY2015 | us-gaap |
Net Increase Decrease In Sales And Transfer Prices And Production Costs
NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts
|
-5546405000 | USD |
| CY2016 | us-gaap |
Net Increase Decrease In Sales And Transfer Prices And Production Costs
NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts
|
-1129026000 | USD |
| CY2017 | us-gaap |
Net Increase Decrease In Sales And Transfer Prices And Production Costs
NetIncreaseDecreaseInSalesAndTransferPricesAndProductionCosts
|
2236183000 | USD |
| CY2017 | us-gaap |
Noncontrolling Interest Increase From Sale Of Parent Equity Interest
NoncontrollingInterestIncreaseFromSaleOfParentEquityInterest
|
6738000 | USD |
| CY2016 | us-gaap |
Noncontrolling Interest Increase From Subsidiary Equity Issuance
NoncontrollingInterestIncreaseFromSubsidiaryEquityIssuance
|
217102000 | USD |
| CY2016 | us-gaap |
Number Of Reportable Segments
NumberOfReportableSegments
|
3 | segment |
| CY2017 | us-gaap |
Number Of Reportable Segments
NumberOfReportableSegments
|
5 | segment |
| CY2016Q4 | us-gaap |
Oil And Gas Joint Interest Billing Receivables
OilAndGasJointInterestBillingReceivables
|
1100000 | USD |
| CY2017Q4 | us-gaap |
Oil And Gas Joint Interest Billing Receivables
OilAndGasJointInterestBillingReceivables
|
149300000 | USD |
| CY2015 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
2339762000 | USD |
| CY2016Q1 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
545069000 | USD |
| CY2016Q2 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
127531000 | USD |
| CY2016Q3 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
556726000 | USD |
| CY2016Q4 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
379022000 | USD |
| CY2016 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
1608348000 | USD |
| CY2017Q1 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
897523000 | USD |
| CY2017Q2 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
690893000 | USD |
| CY2017Q3 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
660313000 | USD |
| CY2017Q4 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
1129286000 | USD |
| CY2017 | us-gaap |
Oil And Gas Revenue
OilAndGasRevenue
|
3378015000 | USD |
| CY2015 | us-gaap |
Oil And Gas Sales Revenue
OilAndGasSalesRevenue
|
1690360000 | USD |
| CY2016 | us-gaap |
Oil And Gas Sales Revenue
OilAndGasSalesRevenue
|
1594997000 | USD |
| CY2017 | us-gaap |
Oil And Gas Sales Revenue
OilAndGasSalesRevenue
|
2651318000 | USD |
| CY2015 | us-gaap |
Operating Costs And Expenses
OperatingCostsAndExpenses
|
69760000 | USD |
| CY2016 | us-gaap |
Operating Costs And Expenses
OperatingCostsAndExpenses
|
73266000 | USD |
| CY2017 | us-gaap |
Operating Costs And Expenses
OperatingCostsAndExpenses
|
88866000 | USD |
| CY2015 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
563139000 | USD |
| CY2016Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
127201000 | USD |
| CY2016Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-324492000 | USD |
| CY2016Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
108457000 | USD |
| CY2016Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-189466000 | USD |
| CY2016 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
-278300000 | USD |
| CY2017Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
390644000 | USD |
| CY2017Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
189794000 | USD |
| CY2017Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
137694000 | USD |
| CY2017Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
214849000 | USD |
| CY2017 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
932981000 | USD |
| CY2017Q4 | us-gaap |
Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
|
231500000 | USD |
| CY2017Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
|
70900000 | USD |
| CY2017Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Five Years
OperatingLeasesFutureMinimumPaymentsDueInFiveYears
|
13600000 | USD |
| CY2017Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
|
13600000 | USD |
| CY2017Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
|
13400000 | USD |
| CY2017Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
|
51300000 | USD |
| CY2017Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Thereafter
OperatingLeasesFutureMinimumPaymentsDueThereafter
|
68700000 | USD |
| CY2016Q4 | us-gaap |
Operating Loss Carryforwards Valuation Allowance
OperatingLossCarryforwardsValuationAllowance
|
201400000 | USD |
| CY2016Q4 | us-gaap |
Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
|
27681000 | USD |
| CY2017Q4 | us-gaap |
Other Accrued Liabilities Current
OtherAccruedLiabilitiesCurrent
|
60212000 | USD |
| CY2016Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
222925000 | USD |
| CY2017Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
278902000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
-152359000 | USD |
| CY2016 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
-55155000 | USD |
| CY2017 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
-4982000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax
|
-102271000 | USD |
| CY2016 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax
|
-36296000 | USD |
| CY2017 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax
|
-3191000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
-153116000 | USD |
| CY2016 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
-44336000 | USD |
| CY2017 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
-4500000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
|
901000 | USD |
| CY2016 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
|
-10675000 | USD |
| CY2017 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
|
-338000 | USD |
| CY2015 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
|
564000 | USD |
| CY2016 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
|
-6778000 | USD |
| CY2017 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax
|
-193000 | USD |
| CY2016Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
236719000 | USD |
| CY2017Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
430525000 | USD |
| CY2016Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
499572000 | USD |
| CY2017Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
783299000 | USD |
| CY2015 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
9953000 | USD |
| CY2016 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
31693000 | USD |
| CY2017 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
24955000 | USD |
| CY2015 | us-gaap |
Other Nonoperating Income
OtherNonoperatingIncome
|
9953000 | USD |
| CY2016 | us-gaap |
Other Nonoperating Income
OtherNonoperatingIncome
|
31693000 | USD |
| CY2017 | us-gaap |
Other Nonoperating Income
OtherNonoperatingIncome
|
24955000 | USD |
| CY2016 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
8580000 | USD |
| CY2017 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
41876000 | USD |
| CY2015 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
18310000 | USD |
| CY2016 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
20156000 | USD |
| CY2017 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
20827000 | USD |
| CY2015 | us-gaap |
Payments Of Dividends Minority Interest
PaymentsOfDividendsMinorityInterest
|
121759000 | USD |
| CY2016 | us-gaap |
Payments Of Dividends Minority Interest
PaymentsOfDividendsMinorityInterest
|
189981000 | USD |
| CY2017 | us-gaap |
Payments Of Dividends Minority Interest
PaymentsOfDividendsMinorityInterest
|
236123000 | USD |
| CY2015 | us-gaap |
Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
|
47013000 | USD |
| CY2016 | us-gaap |
Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
|
26931000 | USD |
| CY2017 | us-gaap |
Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
|
72116000 | USD |
| CY2015 | us-gaap |
Other Operating Activities Cash Flow Statement
OtherOperatingActivitiesCashFlowStatement
|
-27847000 | USD |
| CY2016 | us-gaap |
Other Operating Activities Cash Flow Statement
OtherOperatingActivitiesCashFlowStatement
|
-48165000 | USD |
| CY2017 | us-gaap |
Other Operating Activities Cash Flow Statement
OtherOperatingActivitiesCashFlowStatement
|
14995000 | USD |
| CY2015 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
3375000 | USD |
| CY2016 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
30000 | USD |
| CY2017 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
30000 | USD |
| CY2015 | us-gaap |
Payments Of Debt Extinguishment Costs
PaymentsOfDebtExtinguishmentCosts
|
0 | USD |
| CY2016 | us-gaap |
Payments Of Debt Extinguishment Costs
PaymentsOfDebtExtinguishmentCosts
|
0 | USD |
| CY2017 | us-gaap |
Payments Of Debt Extinguishment Costs
PaymentsOfDebtExtinguishmentCosts
|
89363000 | USD |
| CY2015 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
0 | USD |
| CY2015 | us-gaap |
Payments To Acquire Businesses Gross
PaymentsToAcquireBusinessesGross
|
0 | USD |
| CY2016 | us-gaap |
Payments To Acquire Businesses Gross
PaymentsToAcquireBusinessesGross
|
1051239000 | USD |
| CY2017 | us-gaap |
Payments To Acquire Businesses Gross
PaymentsToAcquireBusinessesGross
|
818957000 | USD |
| CY2017 | us-gaap |
Payments To Acquire Businesses Gross
PaymentsToAcquireBusinessesGross
|
819000000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
0 | USD |
| CY2016 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
0 | USD |
| CY2017 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
1560272000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
84182000 | USD |
| CY2016 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
98399000 | USD |
| CY2017 | us-gaap |
Payments To Acquire Investments
PaymentsToAcquireInvestments
|
159550000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Marketable Securities
PaymentsToAcquireMarketableSecurities
|
0 | USD |
| CY2016 | us-gaap |
Payments To Acquire Marketable Securities
PaymentsToAcquireMarketableSecurities
|
288772000 | USD |
| CY2017 | us-gaap |
Payments To Acquire Marketable Securities
PaymentsToAcquireMarketableSecurities
|
0 | USD |
| CY2015 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
2344414000 | USD |
| CY2016 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
2668273000 | USD |
| CY2017 | us-gaap |
Payments To Acquire Productive Assets
PaymentsToAcquireProductiveAssets
|
2778700000 | USD |
| CY2015 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
2434018000 | USD |
| CY2016 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
1538125000 | USD |
| CY2017 | us-gaap |
Payments To Acquire Property Plant And Equipment
PaymentsToAcquirePropertyPlantAndEquipment
|
1939202000 | USD |
| CY2015 | us-gaap |
Pension Expense
PensionExpense
|
0 | USD |
| CY2016 | us-gaap |
Pension Expense
PensionExpense
|
9403000 | USD |
| CY2017 | us-gaap |
Pension Expense
PensionExpense
|
0 | USD |
| CY2015Q4 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
3000000 | shares |
| CY2016Q4 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
3000000 | shares |
| CY2017Q4 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
3000000 | shares |
| CY2016Q4 | us-gaap |
Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
|
0 | shares |
| CY2017Q4 | us-gaap |
Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
|
0 | shares |
| CY2016Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
63602000 | USD |
| CY2017Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
48552000 | USD |
| CY2015Q4 | us-gaap |
Preferred Stock Shares Issued
PreferredStockSharesIssued
|
0 | shares |
| CY2016Q4 | us-gaap |
Preferred Stock Shares Issued
PreferredStockSharesIssued
|
0 | shares |
| CY2017Q4 | us-gaap |
Preferred Stock Shares Issued
PreferredStockSharesIssued
|
0 | shares |
| CY2015Q4 | us-gaap |
Preferred Stock Shares Outstanding
PreferredStockSharesOutstanding
|
0 | shares |
| CY2017Q4 | us-gaap |
Price Risk Cash Flow Hedge Unrealized Gain Loss To Be Reclassified During Next12 Months
PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months
|
4600000 | USD |
| CY2015 | us-gaap |
Proceeds And Excess Tax Benefit From Sharebased Compensation
ProceedsAndExcessTaxBenefitFromSharebasedCompensation
|
36965000 | USD |
| CY2016 | us-gaap |
Proceeds And Excess Tax Benefit From Sharebased Compensation
ProceedsAndExcessTaxBenefitFromSharebasedCompensation
|
6165000 | USD |
| CY2017 | us-gaap |
Proceeds And Excess Tax Benefit From Sharebased Compensation
ProceedsAndExcessTaxBenefitFromSharebasedCompensation
|
244000 | USD |
| CY2015 | us-gaap |
Proceeds From Issuance Of Common Limited Partners Units
ProceedsFromIssuanceOfCommonLimitedPartnersUnits
|
1182002000 | USD |
| CY2016 | us-gaap |
Proceeds From Issuance Of Common Limited Partners Units
ProceedsFromIssuanceOfCommonLimitedPartnersUnits
|
217102000 | USD |
| CY2017 | us-gaap |
Proceeds From Issuance Of Common Limited Partners Units
ProceedsFromIssuanceOfCommonLimitedPartnersUnits
|
0 | USD |
| CY2015 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
0 | USD |
| CY2016 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
1225999000 | USD |
| CY2017 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
0 | USD |
| CY2015 | us-gaap |
Proceeds From Issuance Of Debt
ProceedsFromIssuanceOfDebt
|
0 | USD |
| CY2016 | us-gaap |
Proceeds From Issuance Of Debt
ProceedsFromIssuanceOfDebt
|
500000000 | USD |
| CY2017 | us-gaap |
Proceeds From Issuance Of Debt
ProceedsFromIssuanceOfDebt
|
3000000000 | USD |
| CY2017Q4 | us-gaap |
Proceeds From Issuance Of Long Term Debt
ProceedsFromIssuanceOfLongTermDebt
|
2974200000 | USD |
| CY2015 | us-gaap |
Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans
ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans
|
14000000 | USD |
| CY2016 | us-gaap |
Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans
ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans
|
5000000 | USD |
| CY2017 | us-gaap |
Proceeds From Issuance Of Shares Under Incentive And Share Based Compensation Plans
ProceedsFromIssuanceOfSharesUnderIncentiveAndShareBasedCompensationPlans
|
200000 | USD |
| CY2015 | us-gaap |
Proceeds From Minority Shareholders
ProceedsFromMinorityShareholders
|
0 | USD |
| CY2016 | us-gaap |
Proceeds From Minority Shareholders
ProceedsFromMinorityShareholders
|
0 | USD |
| CY2017 | us-gaap |
Proceeds From Minority Shareholders
ProceedsFromMinorityShareholders
|
6738000 | USD |
| CY2015 | us-gaap |
Proceeds From Sale Maturity And Collections Of Investments
ProceedsFromSaleMaturityAndCollectionsOfInvestments
|
9723000 | USD |
| CY2016 | us-gaap |
Proceeds From Sale Maturity And Collections Of Investments
ProceedsFromSaleMaturityAndCollectionsOfInvestments
|
12533000 | USD |
| CY2017 | us-gaap |
Proceeds From Sale Maturity And Collections Of Investments
ProceedsFromSaleMaturityAndCollectionsOfInvestments
|
0 | USD |
| CY2015 | us-gaap |
Proceeds From Sale Of Interest In Partnership Unit
ProceedsFromSaleOfInterestInPartnershipUnit
|
673964000 | USD |
| CY2016 | us-gaap |
Proceeds From Sale Of Interest In Partnership Unit
ProceedsFromSaleOfInterestInPartnershipUnit
|
0 | USD |
| CY2017 | us-gaap |
Proceeds From Sale Of Interest In Partnership Unit
ProceedsFromSaleOfInterestInPartnershipUnit
|
0 | USD |
| CY2015 | us-gaap |
Proceeds From Sale Of Productive Assets
ProceedsFromSaleOfProductiveAssets
|
0 | USD |
| CY2016 | us-gaap |
Proceeds From Sale Of Productive Assets
ProceedsFromSaleOfProductiveAssets
|
75000000 | USD |
| CY2017 | us-gaap |
Proceeds From Sale Of Productive Assets
ProceedsFromSaleOfProductiveAssets
|
3573000 | USD |
| CY2015 | us-gaap |
Proceeds From Sale Of Trading Securities Heldforinvestment
ProceedsFromSaleOfTradingSecuritiesHeldforinvestment
|
0 | USD |
| CY2016 | us-gaap |
Proceeds From Sale Of Trading Securities Heldforinvestment
ProceedsFromSaleOfTradingSecuritiesHeldforinvestment
|
3890000 | USD |
| CY2017 | us-gaap |
Proceeds From Sale Of Trading Securities Heldforinvestment
ProceedsFromSaleOfTradingSecuritiesHeldforinvestment
|
283758000 | USD |
| CY2015 | us-gaap |
Proceeds From Short Term Debt
ProceedsFromShortTermDebt
|
617000000 | USD |
| CY2016 | us-gaap |
Proceeds From Short Term Debt
ProceedsFromShortTermDebt
|
740000000 | USD |
| CY2017 | us-gaap |
Proceeds From Short Term Debt
ProceedsFromShortTermDebt
|
2063000000 | USD |
| CY2015 | us-gaap |
Profit Loss
ProfitLoss
|
321886000 | USD |
| CY2016Q1 | us-gaap |
Profit Loss
ProfitLoss
|
88425000 | USD |
| CY2016Q2 | us-gaap |
Profit Loss
ProfitLoss
|
-180807000 | USD |
| CY2016Q3 | us-gaap |
Profit Loss
ProfitLoss
|
70104000 | USD |
| CY2016Q4 | us-gaap |
Profit Loss
ProfitLoss
|
-108785000 | USD |
| CY2016 | us-gaap |
Profit Loss
ProfitLoss
|
-131063000 | USD |
| CY2017Q1 | us-gaap |
Profit Loss
ProfitLoss
|
250705000 | USD |
| CY2017Q2 | us-gaap |
Profit Loss
ProfitLoss
|
122645000 | USD |
| CY2017Q3 | us-gaap |
Profit Loss
ProfitLoss
|
105457000 | USD |
| CY2017Q4 | us-gaap |
Profit Loss
ProfitLoss
|
1379335000 | USD |
| CY2017 | us-gaap |
Profit Loss
ProfitLoss
|
1858142000 | USD |
| CY2016Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
18216775000 | USD |
| CY2017Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
30990309000 | USD |
| CY2016Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
13162216000 | USD |
| CY2017Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
24885015000 | USD |
| CY2015 | us-gaap |
Proved Developed And Undeveloped Reserve Extension And Discovery Energy
ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
|
386 | Bcfe |
| CY2016 | us-gaap |
Proved Developed And Undeveloped Reserve Extension And Discovery Energy
ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
|
68 | Bcfe |
| CY2017 | us-gaap |
Proved Developed And Undeveloped Reserve Extension And Discovery Energy
ProvedDevelopedAndUndevelopedReserveExtensionAndDiscoveryEnergy
|
477 | Bcfe |
| CY2015 | us-gaap |
Proved Developed And Undeveloped Reserve Net Energy Period Increase Decrease
ProvedDevelopedAndUndevelopedReserveNetEnergyPeriodIncreaseDecrease
|
2051 | Bcfe |
| CY2016 | us-gaap |
Proved Developed And Undeveloped Reserve Net Energy Period Increase Decrease
ProvedDevelopedAndUndevelopedReserveNetEnergyPeriodIncreaseDecrease
|
2385 | Bcfe |
| CY2017 | us-gaap |
Proved Developed And Undeveloped Reserve Net Energy Period Increase Decrease
ProvedDevelopedAndUndevelopedReserveNetEnergyPeriodIncreaseDecrease
|
2225 | Bcfe |
| CY2015 | us-gaap |
Proved Developed And Undeveloped Reserve Production Energy
ProvedDevelopedAndUndevelopedReserveProductionEnergy
|
619 | Bcfe |
| CY2016 | us-gaap |
Proved Developed And Undeveloped Reserve Production Energy
ProvedDevelopedAndUndevelopedReserveProductionEnergy
|
776 | Bcfe |
| CY2017 | us-gaap |
Proved Developed And Undeveloped Reserve Production Energy
ProvedDevelopedAndUndevelopedReserveProductionEnergy
|
908 | Bcfe |
| CY2015 | us-gaap |
Proved Developed And Undeveloped Reserves Extensions Discoveries And Additions
ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions
|
2051071 | MMcf |
| CY2016 | us-gaap |
Proved Developed And Undeveloped Reserves Extensions Discoveries And Additions
ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions
|
2384682 | MMcf |
| CY2017 | us-gaap |
Proved Developed And Undeveloped Reserves Extensions Discoveries And Additions
ProvedDevelopedAndUndevelopedReservesExtensionsDiscoveriesAndAdditions
|
2225141 | MMcf |
| CY2014Q4 | us-gaap |
Proved Developed And Undeveloped Reserves Net
ProvedDevelopedAndUndevelopedReservesNet
|
10738948 | MMcf |
| CY2015Q4 | us-gaap |
Proved Developed And Undeveloped Reserves Net
ProvedDevelopedAndUndevelopedReservesNet
|
9976597 | MMcf |
| CY2016Q4 | us-gaap |
Proved Developed And Undeveloped Reserves Net
ProvedDevelopedAndUndevelopedReservesNet
|
13508407 | MMcf |
| CY2017Q4 | us-gaap |
Proved Developed And Undeveloped Reserves Net
ProvedDevelopedAndUndevelopedReservesNet
|
21445667 | MMcf |
| CY2015 | us-gaap |
Proved Developed And Undeveloped Reserves Production
ProvedDevelopedAndUndevelopedReservesProduction
|
618686 | MMcf |
| CY2016 | us-gaap |
Proved Developed And Undeveloped Reserves Production
ProvedDevelopedAndUndevelopedReservesProduction
|
776363 | MMcf |
| CY2017 | us-gaap |
Proved Developed And Undeveloped Reserves Production
ProvedDevelopedAndUndevelopedReservesProduction
|
907892 | MMcf |
| CY2015 | us-gaap |
Proved Developed And Undeveloped Reserves Purchases Of Minerals In Place
ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlace
|
0 | MMcf |
| CY2016 | us-gaap |
Proved Developed And Undeveloped Reserves Purchases Of Minerals In Place
ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlace
|
2395776 | MMcf |
| CY2017 | us-gaap |
Proved Developed And Undeveloped Reserves Purchases Of Minerals In Place
ProvedDevelopedAndUndevelopedReservesPurchasesOfMineralsInPlace
|
9389638 | MMcf |
| CY2015 | us-gaap |
Proved Developed And Undeveloped Reserves Revisions Of Previous Estimates Increase Decrease
ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease
|
-2194675 | MMcf |
| CY2016 | us-gaap |
Proved Developed And Undeveloped Reserves Revisions Of Previous Estimates Increase Decrease
ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease
|
-472285 | MMcf |
| CY2017 | us-gaap |
Proved Developed And Undeveloped Reserves Revisions Of Previous Estimates Increase Decrease
ProvedDevelopedAndUndevelopedReservesRevisionsOfPreviousEstimatesIncreaseDecrease
|
-2766981 | MMcf |
| CY2015 | us-gaap |
Proved Developed And Undeveloped Reserves Sales Of Minerals In Place
ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace
|
61 | MMcf |
| CY2016 | us-gaap |
Proved Developed And Undeveloped Reserves Sales Of Minerals In Place
ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace
|
0 | MMcf |
| CY2017 | us-gaap |
Proved Developed And Undeveloped Reserves Sales Of Minerals In Place
ProvedDevelopedAndUndevelopedReservesSalesOfMineralsInPlace
|
2646 | MMcf |
| CY2014Q4 | us-gaap |
Proved Developed Reserves Volume
ProvedDevelopedReservesVolume
|
4826387 | MMcf |
| CY2015Q4 | us-gaap |
Proved Developed Reserves Volume
ProvedDevelopedReservesVolume
|
6279557 | MMcf |
| CY2016Q4 | us-gaap |
Proved Developed Reserves Volume
ProvedDevelopedReservesVolume
|
6842958 | MMcf |
| CY2017Q4 | us-gaap |
Proved Developed Reserves Volume
ProvedDevelopedReservesVolume
|
11297956 | MMcf |
| CY2014Q4 | us-gaap |
Proved Undeveloped Reserve Volume
ProvedUndevelopedReserveVolume
|
5912561 | MMcf |
| CY2015Q4 | us-gaap |
Proved Undeveloped Reserve Volume
ProvedUndevelopedReserveVolume
|
3697040 | MMcf |
| CY2016Q4 | us-gaap |
Proved Undeveloped Reserve Volume
ProvedUndevelopedReserveVolume
|
6665449 | MMcf |
| CY2017Q4 | us-gaap |
Proved Undeveloped Reserve Volume
ProvedUndevelopedReserveVolume
|
10147711 | MMcf |
| CY2015 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
-1903000 | USD |
| CY2016 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
3856000 | USD |
| CY2017 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
-979000 | USD |
| CY2015 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
|
6300000 | USD |
| CY2016 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
|
19400000 | USD |
| CY2017 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Cost Of Equity
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedCostOfEquity
|
5100000 | USD |
| CY2015 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Interest
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest
|
1600000 | USD |
| CY2016 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Interest
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest
|
2400000 | USD |
| CY2017Q4 | us-gaap |
Restricted Cash And Investments Noncurrent
RestrictedCashAndInvestmentsNoncurrent
|
0 | USD |
| CY2016Q4 | us-gaap |
Restructuring Reserve Current
RestructuringReserveCurrent
|
338000 | USD |
| CY2017Q4 | us-gaap |
Restructuring Reserve Current
RestructuringReserveCurrent
|
41474000 | USD |
| CY2015 | us-gaap |
Results Of Operations Production Or Lifting Costs
ResultsOfOperationsProductionOrLiftingCosts
|
177935000 | USD |
| CY2016 | us-gaap |
Results Of Operations Production Or Lifting Costs
ResultsOfOperationsProductionOrLiftingCosts
|
174826000 | USD |
| CY2017 | us-gaap |
Results Of Operations Production Or Lifting Costs
ResultsOfOperationsProductionOrLiftingCosts
|
182737000 | USD |
| CY2016Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
2509073000 | USD |
| CY2017Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
3996775000 | USD |
| CY2015 | us-gaap |
Revisions Of Previous Quantity Estimates
RevisionsOfPreviousQuantityEstimates
|
-1541418000 | USD |
| CY2016 | us-gaap |
Revisions Of Previous Quantity Estimates
RevisionsOfPreviousQuantityEstimates
|
-60959000 | USD |
| CY2017 | us-gaap |
Revisions Of Previous Quantity Estimates
RevisionsOfPreviousQuantityEstimates
|
-297437000 | USD |
| CY2015 | us-gaap |
Sales And Transfers Of Oil And Gas Produced Net Of Production Costs
SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts
|
813166000 | USD |
| CY2016 | us-gaap |
Sales And Transfers Of Oil And Gas Produced Net Of Production Costs
SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts
|
539980000 | USD |
| CY2017 | us-gaap |
Public Utilities Allowance For Funds Used During Construction Capitalized Interest
PublicUtilitiesAllowanceForFundsUsedDuringConstructionCapitalizedInterest
|
800000 | USD |
| CY2016 | us-gaap |
Regulatory Asset Amortization Period
RegulatoryAssetAmortizationPeriod
|
P16Y | |
| CY2015 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
169004000 | USD |
| CY2016 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
5119000 | USD |
| CY2017 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
2000000000 | USD |
| CY2015 | us-gaap |
Repayments Of Short Term Debt
RepaymentsOfShortTermDebt
|
318000000 | USD |
| CY2016 | us-gaap |
Repayments Of Short Term Debt
RepaymentsOfShortTermDebt
|
1039000000 | USD |
| CY2017 | us-gaap |
Repayments Of Short Term Debt
RepaymentsOfShortTermDebt
|
1076500000 | USD |
| CY2016Q4 | us-gaap |
Restricted Cash And Investments Current
RestrictedCashAndInvestmentsCurrent
|
75000000 | USD |
| CY2016Q4 | us-gaap |
Restricted Cash And Investments Noncurrent
RestrictedCashAndInvestmentsNoncurrent
|
75000000 | USD |
| CY2017 | us-gaap |
Sales And Transfers Of Oil And Gas Produced Net Of Production Costs
SalesAndTransfersOfOilAndGasProducedNetOfProductionCosts
|
1313249000 | USD |
| CY2015 | us-gaap |
Selling General And Administrative Expense
SellingGeneralAndAdministrativeExpense
|
249925000 | USD |
| CY2016 | us-gaap |
Selling General And Administrative Expense
SellingGeneralAndAdministrativeExpense
|
272747000 | USD |
| CY2017 | us-gaap |
Selling General And Administrative Expense
SellingGeneralAndAdministrativeExpense
|
262664000 | USD |
| CY2015 | us-gaap |
Settlement Of Asset Retirement Obligations Through Noncash Payments Amount
SettlementOfAssetRetirementObligationsThroughNoncashPaymentsAmount
|
7000000 | USD |
| CY2016 | us-gaap |
Settlement Of Asset Retirement Obligations Through Noncash Payments Amount
SettlementOfAssetRetirementObligationsThroughNoncashPaymentsAmount
|
66200000 | USD |
| CY2017 | us-gaap |
Settlement Of Asset Retirement Obligations Through Noncash Payments Amount
SettlementOfAssetRetirementObligationsThroughNoncashPaymentsAmount
|
143600000 | USD |
| CY2015 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
58629000 | USD |
| CY2016 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
44605000 | USD |
| CY2017 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
94592000 | USD |
| CY2015 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other
StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther
|
-191662000 | USD |
| CY2016 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other
StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther
|
124460000 | USD |
| CY2017 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Other
StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesOther
|
1409865000 | USD |
| CY2015 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Period Increase Decrease
StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease
|
-3832474000 | USD |
| CY2016 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Period Increase Decrease
StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease
|
11200000 | USD |
| CY2017 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Of Proved Oil And Gas Reserves Period Increase Decrease
StandardizedMeasureOfDiscountedFutureNetCashFlowOfProvedOilAndGasReservesPeriodIncreaseDecrease
|
8013180000 | USD |
| CY2015 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount
StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount
|
600099000 | USD |
| CY2016 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount
StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount
|
122674000 | USD |
| CY2017 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flow Relating To Proved Oil And Gas Reserves Accretion Of Discount
StandardizedMeasureOfDiscountedFutureNetCashFlowRelatingToProvedOilAndGasReservesAccretionOfDiscount
|
115437000 | USD |
| CY2014Q4 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves
StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
|
4810028000 | USD |
| CY2015Q4 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves
StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
|
977554000 | USD |
| CY2016Q4 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves
StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
|
988754000 | USD |
| CY2017Q4 | us-gaap |
Standardized Measure Of Discounted Future Net Cash Flows Relating To Proved Oil And Gas Reserves
StandardizedMeasureOfDiscountedFutureNetCashFlowsRelatingToProvedOilAndGasReserves
|
9001934000 | USD |
| CY2016Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
5860281000 | USD |
| CY2017Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
13319618000 | USD |
| CY2014Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
6373063000 | USD |
| CY2015Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
8028042000 | USD |
| CY2016Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
9119247000 | USD |
| CY2017 | us-gaap |
Stock Issued During Period Value Acquisitions
StockIssuedDuringPeriodValueAcquisitions
|
7665340000 | USD |
| CY2016 | us-gaap |
Stock Issued During Period Value New Issues
StockIssuedDuringPeriodValueNewIssues
|
1225999000 | USD |
| CY2015 | us-gaap |
Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
|
78434000 | USD |
| CY2016 | us-gaap |
Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
|
42943000 | USD |
| CY2017 | us-gaap |
Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
|
26626000 | USD |
| CY2015 | us-gaap |
Stock Repurchased And Retired During Period Value
StockRepurchasedAndRetiredDuringPeriodValue
|
3375000 | USD |
| CY2016 | us-gaap |
Stock Repurchased And Retired During Period Value
StockRepurchasedAndRetiredDuringPeriodValue
|
30000 | USD |
| CY2017 | us-gaap |
Stock Repurchased And Retired During Period Value
StockRepurchasedAndRetiredDuringPeriodValue
|
30000 | USD |
| CY2017Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
18414613000 | USD |
| CY2016Q4 | us-gaap |
Trading Securities
TradingSecurities
|
286400000 | USD |
| CY2016Q4 | us-gaap |
Trading Securities
TradingSecurities
|
286396000 | USD |
| CY2017Q4 | us-gaap |
Trading Securities
TradingSecurities
|
0 | USD |
| CY2016 | us-gaap |
Trading Securities Unrealized Holding Gain Loss
TradingSecuritiesUnrealizedHoldingGainLoss
|
1500000 | USD |
| CY2017 | us-gaap |
Trading Securities Unrealized Holding Gain Loss
TradingSecuritiesUnrealizedHoldingGainLoss
|
-2600000 | USD |
| CY2016Q4 | us-gaap |
Treasury Stock Shares
TreasuryStockShares
|
5069000 | shares |
| CY2017Q4 | us-gaap |
Treasury Stock Shares
TreasuryStockShares
|
3551000 | shares |
| CY2015 | us-gaap |
Treasury Stock Shares Acquired
TreasuryStockSharesAcquired
|
291919 | shares |
| CY2016 | us-gaap |
Treasury Stock Shares Acquired
TreasuryStockSharesAcquired
|
226288 | shares |
| CY2017 | us-gaap |
Treasury Stock Shares Acquired
TreasuryStockSharesAcquired
|
253145 | shares |
| CY2016Q4 | us-gaap |
Treasury Stock Value
TreasuryStockValue
|
91019000 | USD |
| CY2017Q4 | us-gaap |
Treasury Stock Value
TreasuryStockValue
|
63602000 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
1327000 | USD |
| CY2016 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
51181000 | USD |
| CY2017 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
10323000 | USD |
| CY2015Q4 | us-gaap |
Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
|
3600000 | USD |
| CY2016Q4 | us-gaap |
Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
|
5200000 | USD |
| CY2017Q4 | us-gaap |
Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued
UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued
|
8400000 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
152983000 | USD |
| CY2016 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
23978000 | USD |
| CY2017 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
50469000 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
50688000 | USD |
| CY2016 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
20336000 | USD |
| CY2017 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
8978000 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Interest On Income Taxes Expense
UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense
|
1600000 | USD |
| CY2016 | us-gaap |
Unrecognized Tax Benefits Interest On Income Taxes Expense
UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense
|
1600000 | USD |
| CY2017 | us-gaap |
Unrecognized Tax Benefits Interest On Income Taxes Expense
UnrecognizedTaxBenefitsInterestOnIncomeTaxesExpense
|
3200000 | USD |
| CY2015 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
0 | USD |
| CY2016 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
0 | USD |
| CY2017 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
0 | USD |
| CY2015Q4 | us-gaap |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate
UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
|
94100000 | USD |
| CY2016Q4 | us-gaap |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate
UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
|
102000000 | USD |
| CY2017Q4 | us-gaap |
Unrecognized Tax Benefits That Would Impact Effective Tax Rate
UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate
|
120500000 | USD |
| CY2015 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
152939000 | shares |
| CY2016 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
166978000 | shares |
| CY2017 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
187727000 | shares |
| CY2015 | us-gaap |
Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
|
152939000 | shares |
| CY2016 | us-gaap |
Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
|
166978000 | shares |
| CY2017 | us-gaap |
Weighted Average Number Of Share Outstanding Basic And Diluted
WeightedAverageNumberOfShareOutstandingBasicAndDiluted
|
187727000 | shares |
| CY2015 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
152398000 | shares |
| CY2016 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
166978000 | shares |
| CY2017 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
187380000 | shares |
| CY2017Q4 | us-gaap |
Write Off Of Deferred Debt Issuance Cost
WriteOffOfDeferredDebtIssuanceCost
|
400000 | USD |
| CY2017 | us-gaap |
Use Of Estimates
UseOfEstimates
|
<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;text-align:justify;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;">Use of Estimates:</font><font style="font-family:inherit;font-size:10pt;">  The preparation of financial statements in conformity with United States generally accepted accounting principles (GAAP) requires management to make estimates and assumptions that affect the amounts reported in the Consolidated Financial Statements and accompanying notes.  Actual results could differ from those estimates.</font></div><div style="line-height:120%;text-align:justify;text-indent:36px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"></font></div></div> |
