$EXE
Stock $exe

$exe Overview Financials Valuation SEC Filings Company Website

2015 Q4 Form 10-K Financial Statement

#000089512616000395 Filed on February 25, 2016

Income Statement

Concept	2015 Q4	2014 Q4	2013 Q4
Revenue	$4.078B	$7.224B	$6.115B
YoY Change	-43.55%	18.14%	72.84%
Cost Of Revenue	$2.355B	$2.557B	$2.105B
YoY Change	-7.9%	21.47%	329.59%
Gross Profit	$1.723B	$4.667B	$4.010B
YoY Change	-63.08%	16.38%	31.56%
Gross Profit Margin	42.25%	64.6%	65.58%
Selling, General & Admin	$1.440B	$2.814B	$2.801B
YoY Change	-48.83%	0.46%	57.71%
% of Gross Profit	83.58%	60.3%	69.85%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$356.0M	$744.0M	$724.0M
YoY Change	-52.15%	2.76%	0.28%
% of Gross Profit	20.66%	15.94%	18.05%
Operating Expenses	$1.792B	$3.562B	$3.525B
YoY Change	-49.69%	1.05%	41.11%
Operating Profit	-$69.00M	$1.105B	$485.0M
YoY Change	-106.24%	127.84%	-11.82%
Interest Expense	-$146.0M	-$10.00M	-$253.0M
YoY Change	1360.0%	-96.05%	-25400.0%
% of Operating Profit		-0.9%	-52.16%
Other Income/Expense, Net	$5.000M	$10.00M	$8.000M
YoY Change	-50.0%	25.0%	33.33%
Pretax Income	-$2.834B	$954.0M	-$119.0M
YoY Change	-397.06%	-901.68%	-121.14%
Income Tax	-$649.0M	$285.0M	-$46.00M
% Of Pretax Income		29.87%
Net Earnings	-$2.185B	$640.0M	-$116.0M
YoY Change	-441.41%	-651.72%	-138.67%
Net Earnings / Revenue	-53.58%	8.86%	-1.9%
Basic Earnings Per Share
Diluted Earnings Per Share	-$662.1M	$114.3M	-$35.15M
COMMON SHARES
Basic Shares Outstanding	665.1M shares	665.1M shares	665.1M shares
Diluted Shares Outstanding

Balance Sheet

Concept	2015 Q4	2014 Q4	2013 Q4
SHORT-TERM ASSETS
Cash & Short-Term Investments	$825.0M	$4.108B	$837.0M
YoY Change	-79.92%	390.8%	191.64%
Cash & Equivalents	$825.0M	$4.108B	$837.0M
Short-Term Investments
Other Short-Term Assets	$160.0M	$207.0M	$299.0M
YoY Change	-22.71%	-30.77%	95.42%
Inventory
Prepaid Expenses
Receivables	$1.129B	$2.236B	$2.222B
Other Receivables	$0.00	$0.00	$692.0M
Total Short-Term Assets	$2.480B	$7.468B	$3.656B
YoY Change	-66.79%	104.27%	24.02%
LONG-TERM ASSETS
Property, Plant & Equipment	$14.30B	$32.52B	$37.13B
YoY Change	-56.03%	-12.44%	-0.09%
Goodwill		$15.00M	$43.00M
YoY Change		-65.12%	0.0%
Intangibles
YoY Change
Long-Term Investments	$136.0M	$265.0M	$477.0M
YoY Change	-48.68%	-44.44%	-34.48%
Other Assets	$290.0M	$497.0M	$511.0M
YoY Change	-41.65%	-2.74%	-33.29%
Total Long-Term Assets	$14.83B	$33.19B	$38.13B
YoY Change	-55.3%	-12.95%	-1.39%
TOTAL ASSETS
Total Short-Term Assets	$2.480B	$7.468B	$3.656B
Total Long-Term Assets	$14.83B	$33.19B	$38.13B
Total Assets	$17.31B	$40.66B	$41.78B
YoY Change	-57.41%	-2.7%	0.41%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$944.0M	$2.049B	$1.596B
YoY Change	-53.93%	28.38%	-6.67%
Accrued Expenses	$101.0M	$1.224B	$1.703B
YoY Change	-91.75%	-28.13%	-6.74%
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$381.0M	$381.0M	$0.00
YoY Change	0.0%		-100.0%
Total Short-Term Liabilities	$3.685B	$5.656B	$5.515B
YoY Change	-34.85%	2.56%	-11.99%
LONG-TERM LIABILITIES
Long-Term Debt	$10.31B	$11.15B	$12.89B
YoY Change	-7.56%	-13.44%	6.0%
Other Long-Term Liabilities	$409.0M	$679.0M	$984.0M
YoY Change	-39.76%	-31.0%	-16.33%
Total Long-Term Liabilities	$11.23B	$16.89B	$18.13B
YoY Change	-33.5%	-6.82%	3.89%
TOTAL LIABILITIES
Total Short-Term Liabilities	$3.685B	$5.656B	$5.515B
Total Long-Term Liabilities	$11.23B	$16.89B	$18.13B
Total Liabilities	$14.92B	$22.55B	$23.64B
YoY Change	-33.84%	-4.64%	-0.31%
SHAREHOLDERS EQUITY
Retained Earnings	-$13.20B	$1.483B	$688.0M
YoY Change	-990.22%	115.55%	57.44%
Common Stock	$7.000M	$7.000M	$7.000M
YoY Change	0.0%	0.0%	0.0%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$33.00M	$37.00M	$46.00M
YoY Change	-10.81%	-19.57%	-4.17%
Treasury Stock Shares	1.438M shares	1.614M shares	2.002M shares
Shareholders Equity	$2.138B	$16.90B	$16.00B
YoY Change
Total Liabilities & Shareholders Equity	$17.31B	$40.75B	$41.78B
YoY Change	-57.51%	-2.47%	0.41%

Cashflow Statement

Concept	2015 Q4	2014 Q4	2013 Q4
OPERATING ACTIVITIES
Net Income	-$2.185B	$640.0M	-$116.0M
YoY Change	-441.41%	-651.72%	-138.67%
Depreciation, Depletion And Amortization	$356.0M	$744.0M	$724.0M
YoY Change	-52.15%	2.76%	0.28%
Cash From Operating Activities	$179.0M	$829.0M	$1.028B
YoY Change	-78.41%	-19.36%	17.75%
INVESTING ACTIVITIES
Capital Expenditures	-$554.0M	-$1.735B	-$1.688B
YoY Change	-68.07%	2.78%	-32.15%
Acquisitions
YoY Change
Other Investing Activities	$8.000M	$5.127B	$768.0M
YoY Change	-99.84%	567.58%	-86.43%
Cash From Investing Activities	-$546.0M	$3.392B	-$920.0M
YoY Change	-116.1%	-468.7%	-129.02%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-567.0M	-203.0M	-258.0M
YoY Change	179.31%	-21.32%	-93.38%
NET CHANGE
Cash From Operating Activities	179.0M	829.0M	1.028B
Cash From Investing Activities	-546.0M	3.392B	-920.0M
Cash From Financing Activities	-567.0M	-203.0M	-258.0M
Net Change In Cash	-934.0M	4.018B	-150.0M
YoY Change	-123.25%	-2778.67%	-203.45%
FREE CASH FLOW
Cash From Operating Activities	$179.0M	$829.0M	$1.028B
Capital Expenditures	-$554.0M	-$1.735B	-$1.688B
Free Cash Flow	$733.0M	$2.564B	$2.716B
YoY Change	-71.41%	-5.6%	-19.19%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
CY2014Q4	chk	Accrued Drilling And Production Costs AccruedDrillingAndProductionCosts	385000000	USD
CY2015Q4	chk	Accrued Drilling And Production Costs AccruedDrillingAndProductionCosts	212000000	USD
CY2012	chk	Capitalized Interest Of Unproved Properties Excluded From Amortization CapitalizedInterestOfUnprovedPropertiesExcludedFromAmortization	475000000	USD
CY2013	chk	Capitalized Interest Of Unproved Properties Excluded From Amortization CapitalizedInterestOfUnprovedPropertiesExcludedFromAmortization	259000000	USD
CY2014	chk	Capitalized Interest Of Unproved Properties Excluded From Amortization CapitalizedInterestOfUnprovedPropertiesExcludedFromAmortization	303000000	USD
CY2015	chk	Capitalized Interest Of Unproved Properties Excluded From Amortization CapitalizedInterestOfUnprovedPropertiesExcludedFromAmortization	331000000	USD
CY2015Q4	chk	Capitalized Interest Of Unproved Properties Excluded From Amortization Cumulative CapitalizedInterestOfUnprovedPropertiesExcludedFromAmortizationCumulative	1368000000	USD
CY2015	chk	Cash Proceedsfrom Volumetric Production Payment Vpp CashProceedsfromVolumetricProductionPaymentVPP	4331000000	USD
CY2013	chk	Changein Divested Provedand Unprovedproperties Non Cash Investingand Financing Activities ChangeinDivestedProvedandUnprovedpropertiesNonCashInvestingandFinancingActivities	-104000000	USD
CY2014	chk	Changein Divested Provedand Unprovedproperties Non Cash Investingand Financing Activities ChangeinDivestedProvedandUnprovedpropertiesNonCashInvestingandFinancingActivities	38000000	USD
CY2015	chk	Changein Divested Provedand Unprovedproperties Non Cash Investingand Financing Activities ChangeinDivestedProvedandUnprovedpropertiesNonCashInvestingandFinancingActivities	35000000	USD
CY2013	chk	Divestitureof Provedand Unprovedproperties Non Cash Investingand Financing Activities DivestitureofProvedandUnprovedpropertiesNonCashInvestingandFinancingActivities	0	USD
CY2014	chk	Divestitureof Provedand Unprovedproperties Non Cash Investingand Financing Activities DivestitureofProvedandUnprovedpropertiesNonCashInvestingandFinancingActivities	0	USD
CY2015	chk	Divestitureof Provedand Unprovedproperties Non Cash Investingand Financing Activities DivestitureofProvedandUnprovedpropertiesNonCashInvestingandFinancingActivities	1024000000	USD
CY2015Q4	chk	Effects Of Cash Flow Hedges Considered In Calculation Ceiling Limitation Amount EffectsOfCashFlowHedgesConsideredInCalculationCeilingLimitationAmount	176000000	USD
CY2014Q4	chk	Financing Lease Obligations Noncurrent FinancingLeaseObligationsNoncurrent	30000000	USD
CY2015Q4	chk	Financing Lease Obligations Noncurrent FinancingLeaseObligationsNoncurrent	29000000	USD
CY2015Q4	chk	Gathering Fee Escalation Rate GatheringFeeEscalationRate	0.15
CY2014Q4	chk	Longtermdebtcurrentmaturitiesincludingdiscount Longtermdebtcurrentmaturitiesincludingdiscount	396000000	USD
CY2015Q4	chk	Longtermdebtcurrentmaturitiesincludingdiscount Longtermdebtcurrentmaturitiesincludingdiscount	381000000	USD
CY2013	chk	Oil And Gas Property And Equipment Adjusted As Result Of Change In Accrued Costs OilAndGasPropertyAndEquipmentAdjustedAsResultOfChangeInAccruedCosts	-1000000	USD
CY2014	chk	Oil And Gas Property And Equipment Adjusted As Result Of Change In Accrued Costs OilAndGasPropertyAndEquipmentAdjustedAsResultOfChangeInAccruedCosts	-74000000	USD
CY2015	chk	Oil And Gas Property And Equipment Adjusted As Result Of Change In Accrued Costs OilAndGasPropertyAndEquipmentAdjustedAsResultOfChangeInAccruedCosts	55000000	USD
CY2013	chk	Payments For Proceeds From Intercompany Advances From Financing Activities PaymentsForProceedsFromIntercompanyAdvancesFromFinancingActivities	0	USD
CY2014	chk	Payments For Proceeds From Intercompany Advances From Financing Activities PaymentsForProceedsFromIntercompanyAdvancesFromFinancingActivities	0	USD
CY2015	chk	Payments For Proceeds From Intercompany Advances From Financing Activities PaymentsForProceedsFromIntercompanyAdvancesFromFinancingActivities	0	USD
CY2015	chk	Percentage Of Beneficial Interest Owned PercentageOfBeneficialInterestOwned	0.50
CY2015	chk	Percentageof Reserve Estimatesby Value Preparedby Independent Engineering Firm PercentageofReserveEstimatesbyValuePreparedbyIndependentEngineeringFirm	0.77
CY2015	chk	Percentageof Reserve Estimatesby Volume Preparedby Independent Engineering Firm PercentageofReserveEstimatesbyVolumePreparedbyIndependentEngineeringFirm	0.59
CY2014Q4	chk	Prepayments Received PrepaymentsReceived	189000000	USD
CY2015Q4	chk	Prepayments Received PrepaymentsReceived	169000000	USD
CY2013	chk	Repurchaseofnoncontrollinginterest Non Cash Investingand Financing Activities RepurchaseofnoncontrollinginterestNonCashInvestingandFinancingActivities	0	USD
CY2014	chk	Repurchaseofnoncontrollinginterest Non Cash Investingand Financing Activities RepurchaseofnoncontrollinginterestNonCashInvestingandFinancingActivities	0	USD
CY2015	chk	Repurchaseofnoncontrollinginterest Non Cash Investingand Financing Activities RepurchaseofnoncontrollinginterestNonCashInvestingandFinancingActivities	872000000	USD
CY2015Q3	chk	Restructuring Percentageof Employees Effected RestructuringPercentageofEmployeesEffected	0.15
CY2013	chk	Share Based Compensation Arrangement By Share Based Payment Award Shares Underlying Options Exercised In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesUnderlyingOptionsExercisedInPeriod	346000	shares
CY2014	chk	Share Based Compensation Arrangement By Share Based Payment Award Shares Underlying Options Exercised In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesUnderlyingOptionsExercisedInPeriod	1322000	shares
CY2015	chk	Share Based Compensation Arrangement By Share Based Payment Award Shares Underlying Options Exercised In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesUnderlyingOptionsExercisedInPeriod	14000	shares
CY2015	chk	Treasury Regulations Purchaseof Stock TreasuryRegulationsPurchaseofStock	0.05
CY2015Q4	chk	Working Capital Deficit WorkingCapitalDeficit	-1205000000	USD
CY2015	dei	Amendment Flag AmendmentFlag	false
CY2015	dei	Current Fiscal Year End Date CurrentFiscalYearEndDate	--12-31
CY2015	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2015	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2015
CY2015	dei	Document Period End Date DocumentPeriodEndDate	2015-12-31
CY2015	dei	Document Type DocumentType	10-K
CY2015	dei	Entity Central Index Key EntityCentralIndexKey	0000895126
CY2016Q1	dei	Entity Common Stock Shares Outstanding EntityCommonStockSharesOutstanding	664992714	shares
CY2015	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2015	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2015Q2	dei	Entity Public Float EntityPublicFloat	7400000000	USD
CY2015	dei	Entity Registrant Name EntityRegistrantName	CHESAPEAKE ENERGY CORP
CY2015	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2015	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	No
CY2015	dei	Trading Symbol TradingSymbol	CHK
CY2014Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	2049000000	USD
CY2015Q4	us-gaap	Accounts Payable Current AccountsPayableCurrent	944000000	USD
CY2014Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	2236000000	USD
CY2015Q4	us-gaap	Accounts Receivable Net Current AccountsReceivableNetCurrent	1129000000	USD
CY2014Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	55000000	USD
CY2015Q4	us-gaap	Accrual For Taxes Other Than Income Taxes Current AccrualForTaxesOtherThanIncomeTaxesCurrent	21000000	USD
CY2014Q4	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	141000000	USD
CY2015Q4	us-gaap	Accrued Marketing Costs Current AccruedMarketingCostsCurrent	201000000	USD
CY2014Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	1176000000	USD
CY2015Q4	us-gaap	Accrued Royalties Current AccruedRoyaltiesCurrent	500000000	USD
CY2014Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	39043000000	USD
CY2015Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	59365000000	USD
CY2014Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-143000000	USD
CY2015Q4	us-gaap	Accumulated Other Comprehensive Income Loss Net Of Tax AccumulatedOtherComprehensiveIncomeLossNetOfTax	-99000000	USD
CY2012	us-gaap	Acquisition Costs AcquisitionCosts	4304000000	USD
CY2013	us-gaap	Acquisition Costs AcquisitionCosts	200000000	USD
CY2014	us-gaap	Acquisition Costs AcquisitionCosts	651000000	USD
CY2015	us-gaap	Acquisition Costs AcquisitionCosts	121000000	USD
CY2015Q4	us-gaap	Acquisition Costs Cumulative AcquisitionCostsCumulative	5276000000	USD
CY2014Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	12531000000	USD
CY2015Q4	us-gaap	Additional Paid In Capital AdditionalPaidInCapital	12403000000	USD
CY2013	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	150000000	USD
CY2014	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	104000000	USD
CY2015	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	89000000	USD
CY2014Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	21000000	USD
CY2015Q4	us-gaap	Allowance For Doubtful Accounts Receivable AllowanceForDoubtfulAccountsReceivable	23000000	USD
CY2013	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	91000000	USD
CY2014	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	42000000	USD
CY2015	us-gaap	Amortization Of Financing Costs And Discounts AmortizationOfFinancingCostsAndDiscounts	59000000	USD
CY2013	us-gaap	Asset Impairment Charges AssetImpairmentCharges	546000000	USD
CY2014	us-gaap	Asset Impairment Charges AssetImpairmentCharges	88000000	USD
CY2015	us-gaap	Asset Impairment Charges AssetImpairmentCharges	194000000	USD
CY2013Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	405000000	USD
CY2013	us-gaap	Concentration Risk Percentage1 ConcentrationRiskPercentage1	0.10
CY2013	us-gaap	Cost Of Services Oil And Gas CostOfServicesOilAndGas	736000000	USD
CY2014Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	465000000	USD
CY2015Q4	us-gaap	Asset Retirement Obligation AssetRetirementObligation	473000000	USD
CY2014	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	22000000	USD
CY2015	us-gaap	Asset Retirement Obligation Accretion Expense AssetRetirementObligationAccretionExpense	23000000	USD
CY2014Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	18000000	USD
CY2015Q4	us-gaap	Asset Retirement Obligation Current AssetRetirementObligationCurrent	21000000	USD
CY2014	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	29000000	USD
CY2015	us-gaap	Asset Retirement Obligation Liabilities Incurred AssetRetirementObligationLiabilitiesIncurred	6000000	USD
CY2014	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	92000000	USD
CY2015	us-gaap	Asset Retirement Obligation Liabilities Settled AssetRetirementObligationLiabilitiesSettled	34000000	USD
CY2014	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	101000000	USD
CY2015	us-gaap	Asset Retirement Obligation Revision Of Estimate AssetRetirementObligationRevisionOfEstimate	13000000	USD
CY2014Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	447000000	USD
CY2015Q4	us-gaap	Asset Retirement Obligations Noncurrent AssetRetirementObligationsNoncurrent	452000000	USD
CY2013Q4	us-gaap	Assets Assets	41782000000	USD
CY2014Q4	us-gaap	Assets Assets	40751000000	USD
CY2015Q4	us-gaap	Assets Assets	17357000000	USD
CY2014Q4	us-gaap	Assets Current AssetsCurrent	7468000000	USD
CY2015Q4	us-gaap	Assets Current AssetsCurrent	2480000000	USD
CY2014Q4	us-gaap	Bank Overdrafts BankOverdrafts	333000000	USD
CY2015Q4	us-gaap	Bank Overdrafts BankOverdrafts	60000000	USD
CY2012	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	4837000000	USD
CY2013	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	474000000	USD
CY2014	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	967000000	USD
CY2015	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortization	520000000	USD
CY2014Q4	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization Cumulative CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative	9788000000	USD
CY2015Q4	us-gaap	Capitalized Costs Of Unproved Properties Excluded From Amortization Cumulative CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative	6798000000	USD
CY2014Q4	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	58594000000	USD
CY2015Q4	us-gaap	Capitalized Costs Proved Properties CapitalizedCostsProvedProperties	63843000000	USD
CY2012Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	287000000	USD
CY2013Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	837000000	USD
CY2014Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	4108000000	USD
CY2015Q4	us-gaap	Cash And Cash Equivalents At Carrying Value CashAndCashEquivalentsAtCarryingValue	825000000	USD
CY2013	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	550000000	USD
CY2014	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	3271000000	USD
CY2015	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-3283000000	USD
CY2013	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.35
CY2014	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.35
CY2015	us-gaap	Common Stock Dividends Per Share Declared CommonStockDividendsPerShareDeclared	0.0875
CY2014Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2015Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2014Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2015Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	1000000000	shares
CY2012Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	666468000	shares
CY2013Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	666192000	shares
CY2014Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	664944232	shares
CY2015Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	664795509	shares
CY2014Q4	us-gaap	Common Stock Value CommonStockValue	7000000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	744000000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1936000000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	-14641000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	1140000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	0	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Other DeferredTaxAssetsTaxDeferredExpenseOther	535000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	239000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Accrued Liabilities DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAccruedLiabilities	332000000	USD
CY2013	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	914000000	USD
CY2014	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	2075000000	USD
CY2015	us-gaap	Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest	-14591000000	USD
CY2015Q4	us-gaap	Common Stock Value CommonStockValue	7000000	USD
CY2014	us-gaap	Cost Of Services Oil And Gas CostOfServicesOilAndGas	431000000	USD
CY2015	us-gaap	Cost Of Services Oil And Gas CostOfServicesOilAndGas	0	USD
CY2013	us-gaap	Costs And Expenses CostsAndExpenses	17011000000	USD
CY2014	us-gaap	Costs And Expenses CostsAndExpenses	19648000000	USD
CY2015	us-gaap	Costs And Expenses CostsAndExpenses	31683000000	USD
CY2013	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2014	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2015	us-gaap	Current Federal Tax Expense Benefit CurrentFederalTaxExpenseBenefit	0	USD
CY2013	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	22000000	USD
CY2014	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	47000000	USD
CY2015	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	-36000000	USD
CY2013	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	22000000	USD
CY2014	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	47000000	USD
CY2015	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	-36000000	USD
CY2014Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	11535000000	USD
CY2015Q4	us-gaap	Debt Instrument Carrying Amount DebtInstrumentCarryingAmount	10735000000	USD
CY2014Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	11756000000	USD
CY2015Q4	us-gaap	Debt Instrument Face Amount DebtInstrumentFaceAmount	9706000000	USD
CY2015	us-gaap	Debt Instrument Term DebtInstrumentTerm	P10Y
CY2013	us-gaap	Decrease In Restricted Cash DecreaseInRestrictedCash	177000000	USD
CY2014	us-gaap	Decrease In Restricted Cash DecreaseInRestrictedCash	37000000	USD
CY2015	us-gaap	Decrease In Restricted Cash DecreaseInRestrictedCash	52000000	USD
CY2013	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	502000000	USD
CY2014	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	1115000000	USD
CY2015	us-gaap	Deferred Federal Income Tax Expense Benefit DeferredFederalIncomeTaxExpenseBenefit	-4385000000	USD
CY2013	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	526000000	USD
CY2014	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	1097000000	USD
CY2015	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	-4427000000	USD
CY2014Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	5837000000	USD
CY2015Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	1170000000	USD
CY2013	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	24000000	USD
CY2014	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-18000000	USD
CY2015	us-gaap	Deferred State And Local Income Tax Expense Benefit DeferredStateAndLocalIncomeTaxExpenseBenefit	-42000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	1667000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Gross DeferredTaxAssetsGross	4119000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	84000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	132000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1445000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	1170000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	945000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards DeferredTaxAssetsOperatingLossCarryforwards	1556000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	234000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	250000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Property Plant And Equipment DeferredTaxAssetsPropertyPlantAndEquipment	0	USD
CY2014Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	165000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Reserves And Accruals Asset Retirement Obligations DeferredTaxAssetsTaxDeferredExpenseReservesAndAccrualsAssetRetirementObligations	174000000	USD
CY2014Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	222000000	USD
CY2015Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	2949000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	4392000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	0	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	443000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Deferred Financing Costs DeferredTaxLiabilitiesDeferredExpenseDeferredFinancingCosts	0	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Other Capitalized Costs DeferredTaxLiabilitiesDeferredExpenseOtherCapitalizedCosts	1023000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Deferred Expense Other Capitalized Costs DeferredTaxLiabilitiesDeferredExpenseOtherCapitalizedCosts	802000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	428000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	294000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	4392000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Noncurrent DeferredTaxLiabilitiesNoncurrent	0	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	114000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Other DeferredTaxLiabilitiesOther	74000000	USD
CY2014Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	3829000000	USD
CY2015Q4	us-gaap	Deferred Tax Liabilities Property Plant And Equipment DeferredTaxLiabilitiesPropertyPlantAndEquipment	0	USD
CY2013	us-gaap	Depletion Of Oil And Gas Properties DepletionOfOilAndGasProperties	2589000000	USD
CY2014	us-gaap	Depletion Of Oil And Gas Properties DepletionOfOilAndGasProperties	2683000000	USD
CY2015	us-gaap	Depletion Of Oil And Gas Properties DepletionOfOilAndGasProperties	2099000000	USD
CY2013	us-gaap	Depreciation And Amortization DepreciationAndAmortization	314000000	USD
CY2014	us-gaap	Depreciation And Amortization DepreciationAndAmortization	232000000	USD
CY2015	us-gaap	Depreciation And Amortization DepreciationAndAmortization	130000000	USD
CY2013	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2903000000	USD
CY2014	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2915000000	USD
CY2015	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	2229000000	USD
CY2014Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	879000000	USD
CY2015Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	366000000	USD
CY2014Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	652000000	USD
CY2015Q4	us-gaap	Derivative Assets Liabilities At Fair Value Net DerivativeAssetsLiabilitiesAtFairValueNet	512000000	USD
CY2014Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	6000000	USD
CY2015Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	246000000	USD
CY2013	us-gaap	Derivative Cash Received On Hedge DerivativeCashReceivedOnHedge	104000000	USD
CY2014	us-gaap	Derivative Cash Received On Hedge DerivativeCashReceivedOnHedge	253000000	USD
CY2015	us-gaap	Derivative Cash Received On Hedge DerivativeCashReceivedOnHedge	-1123000000	USD
CY2014Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	652000000	USD
CY2015Q4	us-gaap	Derivative Fair Value Of Derivative Asset DerivativeFairValueOfDerivativeAsset	512000000	USD
CY2013	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	-63000000	USD
CY2014	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	81000000	USD
CY2015	us-gaap	Derivative Instruments Not Designated As Hedging Instruments Gain Loss Net DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet	9000000	USD
CY2014Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	15000000	USD
CY2015Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	40000000	USD
CY2014Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	218000000	USD
CY2015Q4	us-gaap	Derivative Liabilities Noncurrent DerivativeLiabilitiesNoncurrent	60000000	USD
CY2014Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2015Q4	us-gaap	Derivative Liability Fair Value Gross Asset DerivativeLiabilityFairValueGrossAsset	0	USD
CY2014Q4	us-gaap	Disposal Group Including Discontinued Operation Property Plant And Equipment DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment	93000000	USD
CY2015Q4	us-gaap	Disposal Group Including Discontinued Operation Property Plant And Equipment DisposalGroupIncludingDiscontinuedOperationPropertyPlantAndEquipment	95000000	USD
CY2014Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	101000000	USD
CY2015Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	0	USD
CY2014Q4	us-gaap	Due From Affiliate Current DueFromAffiliateCurrent	0	USD
CY2015Q4	us-gaap	Due From Affiliate Current DueFromAffiliateCurrent	0	USD
CY2014Q4	us-gaap	Due To Affiliate Current DueToAffiliateCurrent	0	USD
CY2015Q4	us-gaap	Due To Affiliate Current DueToAffiliateCurrent	0	USD
CY2013	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.73
CY2014	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.93
CY2015	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-22.43
CY2013	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.73
CY2014	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.87
CY2015	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-22.43
CY2014Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	344000000	USD
CY2015Q4	us-gaap	Employee Related Liabilities Current EmployeeRelatedLiabilitiesCurrent	264000000	USD
CY2013	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	USD
CY2014	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	USD
CY2015	us-gaap	Equity Method Investment Dividends Or Distributions EquityMethodInvestmentDividendsOrDistributions	0	USD
CY2014Q4	us-gaap	Equity Method Investments EquityMethodInvestments	265000000	USD
CY2015Q4	us-gaap	Equity Method Investments EquityMethodInvestments	136000000	USD
CY2012	us-gaap	Exploration Costs ExplorationCosts	58000000	USD
CY2013	us-gaap	Exploration Costs ExplorationCosts	15000000	USD
CY2014	us-gaap	Exploration Costs ExplorationCosts	13000000	USD
CY2015	us-gaap	Exploration Costs ExplorationCosts	68000000	USD
CY2015Q4	us-gaap	Exploration Costs Cumulative ExplorationCostsCumulative	154000000	USD
CY2014Q4	us-gaap	Fair Value Net Asset Liability FairValueNetAssetLiability	-1000000	USD
CY2015Q4	us-gaap	Fair Value Net Asset Liability FairValueNetAssetLiability	-1000000	USD
CY2015	us-gaap	Gain Loss On Contract Termination GainLossOnContractTermination	18000000	USD
CY2013	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	5000000	USD
CY2014	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	3000000	USD
CY2015	us-gaap	Gain Loss On Fair Value Hedges Recognized In Earnings GainLossOnFairValueHedgesRecognizedInEarnings	3000000	USD
CY2013	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	-7000000	USD
CY2014	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	67000000	USD
CY2015	us-gaap	Gain Loss On Sale Of Investments GainLossOnSaleOfInvestments	0	USD
CY2013	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	302000000	USD
CY2014	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	199000000	USD
CY2015	us-gaap	Gain Loss On Sale Of Property Plant Equipment GainLossOnSaleOfPropertyPlantEquipment	-4000000	USD
CY2013	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-483000000	USD
CY2014	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-58000000	USD
CY2015	us-gaap	Gain Loss On Sales Of Assets And Asset Impairment Charges GainLossOnSalesOfAssetsAndAssetImpairmentCharges	-175000000	USD
CY2013	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-40000000	USD
CY2014	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	-63000000	USD
CY2015	us-gaap	Gains Losses On Extinguishment Of Debt GainsLossesOnExtinguishmentOfDebt	304000000	USD
CY2013	us-gaap	Gains Losses On Restructuring Of Debt GainsLossesOnRestructuringOfDebt	-193000000	USD
CY2014	us-gaap	Gains Losses On Restructuring Of Debt GainsLossesOnRestructuringOfDebt	-197000000	USD
CY2015	us-gaap	Gains Losses On Restructuring Of Debt GainsLossesOnRestructuringOfDebt	279000000	USD
CY2013	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	9461000000	USD
CY2014	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	12236000000	USD
CY2015	us-gaap	Gas Gathering Transportation Marketing And Processing Costs GasGatheringTransportationMarketingAndProcessingCosts	7130000000	USD
CY2013	us-gaap	Gas Gathering Transportation Marketing And Processing Revenue GasGatheringTransportationMarketingAndProcessingRevenue	9559000000	USD
CY2014	us-gaap	Gas Gathering Transportation Marketing And Processing Revenue GasGatheringTransportationMarketingAndProcessingRevenue	12225000000	USD
CY2015	us-gaap	Gas Gathering Transportation Marketing And Processing Revenue GasGatheringTransportationMarketingAndProcessingRevenue	7373000000	USD
CY2014Q4	us-gaap	Gas Imbalance Asset Liability GasImbalanceAssetLiability	-12000000	USD
CY2015Q4	us-gaap	Gas Imbalance Asset Liability GasImbalanceAssetLiability	-10000000	USD
CY2013	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	457000000	USD
CY2014	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	322000000	USD
CY2015	us-gaap	General And Administrative Expense GeneralAndAdministrativeExpense	235000000	USD
CY2013	us-gaap	Impairment Of Investments ImpairmentOfInvestments	10000000	USD
CY2014	us-gaap	Impairment Of Investments ImpairmentOfInvestments	5000000	USD
CY2015	us-gaap	Impairment Of Investments ImpairmentOfInvestments	53000000	USD
CY2015	us-gaap	Impairment Of Leasehold ImpairmentOfLeasehold	1900000000	USD
CY2013	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	1442000000	USD
CY2014	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	3200000000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest	-19098000000	USD
CY2013	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-216000000	USD
CY2014	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-75000000	USD
CY2015	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-96000000	USD
CY2013	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-219000000	USD
CY2014	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-75000000	USD
CY2015	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	-96000000	USD
CY2013	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	548000000	USD
CY2014	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	1144000000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	-4463000000	USD
CY2013	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	-12000000	USD
CY2014	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	74000000	USD
CY2015	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2727000000	USD
CY2015	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	2700000000	USD
CY2013	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	505000000	USD
CY2014	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	1120000000	USD
CY2015	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-6684000000	USD
CY2013	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	5000000	USD
CY2014	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-4000000	USD
CY2015	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-100000000	USD
CY2013	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	88000000	USD
CY2014	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	68000000	USD
CY2015	us-gaap	Income Tax Reconciliation State And Local Income Taxes IncomeTaxReconciliationStateAndLocalIncomeTaxes	-406000000	USD
CY2015Q4	us-gaap	Liabilities Current LiabilitiesCurrent	3685000000	USD
CY2014Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	16890000000	USD
CY2013	us-gaap	Income Tax Reconciliation Tax Contingencies State And Local IncomeTaxReconciliationTaxContingenciesStateAndLocal	-38000000	USD
CY2014	us-gaap	Income Tax Reconciliation Tax Contingencies State And Local IncomeTaxReconciliationTaxContingenciesStateAndLocal	-114000000	USD
CY2015	us-gaap	Income Tax Reconciliation Tax Contingencies State And Local IncomeTaxReconciliationTaxContingenciesStateAndLocal	0	USD
CY2013	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	26000000	USD
CY2014	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	10000000	USD
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	44000000	USD
CY2013	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-391000000	USD
CY2014	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-491000000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable IncreaseDecreaseInAccountsPayable	-2220000000	USD
CY2013	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-5000000	USD
CY2014	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	21000000	USD
CY2015	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	-1186000000	USD
CY2013	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-63000000	USD
CY2014	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-84000000	USD
CY2015	us-gaap	Increase Decrease In Accrued Liabilities And Other Operating Liabilities IncreaseDecreaseInAccruedLiabilitiesAndOtherOperatingLiabilities	-148000000	USD
CY2013	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	816000000	USD
CY2014	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	637000000	USD
CY2015	us-gaap	Interest Costs Capitalized Adjustment InterestCostsCapitalizedAdjustment	424000000	USD
CY2013	us-gaap	Interest Expense InterestExpense	227000000	USD
CY2014	us-gaap	Interest Expense InterestExpense	89000000	USD
CY2015	us-gaap	Interest Expense InterestExpense	317000000	USD
CY2013	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	38000000	USD
CY2014	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	28000000	USD
CY2015	us-gaap	Interest Expense Borrowings InterestExpenseBorrowings	12000000	USD
CY2013	us-gaap	Interest Expense Debt InterestExpenseDebt	740000000	USD
CY2014	us-gaap	Interest Expense Debt InterestExpenseDebt	704000000	USD
CY2015	us-gaap	Interest Expense Debt InterestExpenseDebt	682000000	USD
CY2013	us-gaap	Interest Expense Other InterestExpenseOther	116000000	USD
CY2014	us-gaap	Interest Expense Other InterestExpenseOther	36000000	USD
CY2015	us-gaap	Interest Expense Other InterestExpenseOther	0	USD
CY2013	us-gaap	Interest Paid Net InterestPaidNet	43000000	USD
CY2014	us-gaap	Interest Paid Net InterestPaidNet	96000000	USD
CY2015	us-gaap	Interest Paid Net InterestPaidNet	235000000	USD
CY2014Q4	us-gaap	Interest Payable Current InterestPayableCurrent	150000000	USD
CY2015Q4	us-gaap	Interest Payable Current InterestPayableCurrent	101000000	USD
CY2014Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2015Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2014Q4	us-gaap	Land Land	296000000	USD
CY2015Q4	us-gaap	Land Land	289000000	USD
CY2013	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	158000000	USD
CY2014	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	33000000	USD
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	7000000	USD
CY2013	us-gaap	Lease Operating Expense LeaseOperatingExpense	1159000000	USD
CY2014	us-gaap	Lease Operating Expense LeaseOperatingExpense	1208000000	USD
CY2015	us-gaap	Lease Operating Expense LeaseOperatingExpense	1046000000	USD
CY2013	us-gaap	Legal Fees LegalFees	0	USD
CY2014	us-gaap	Legal Fees LegalFees	234000000	USD
CY2015	us-gaap	Legal Fees LegalFees	353000000	USD
CY2014Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	40751000000	USD
CY2015Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	17357000000	USD
CY2014Q4	us-gaap	Liabilities Current LiabilitiesCurrent	5656000000	USD
CY2015Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	11275000000	USD
CY2015	us-gaap	Line Of Credit Facility Borrowing Capacity Description LineOfCreditFacilityBorrowingCapacityDescription	The amended credit facility provides that, while the obligations are required to be secured, (i) we have the right to incur junior lien indebtedness of up to $4.0 billion; (ii) our use of the facility will be subject to a borrowing base; (iii) the rate of interest on outstanding loans, as well as fees on undrawn commitments, will vary based on the percentage of the borrowing base used, rather than on our credit ratings; (iv) the total leverage ratio covenant will be suspended; and (v) the credit facility will be subject to a first lien secured leverage ratio and an interest rate coverage ratio (as described below). The permitted junior lien debt basket of $4.0 billion may be increased upon the satisfaction of certain conditions, including the following: (i) after giving effect to all debt secured by such junior liens and the uses of such debt in retirement of other indebtedness, our net annual cash interest expense would increase by no more than $75 million, and (ii) we have exchanged debt secured by such junior liens for more than $2.0 billion aggregate principal amount of outstanding senior notes with maturities or initial put dates in 2017 through 2019. The September amendment sets the borrowing base at $4.0 billion. The total commitments under the credit facility remain at $4.0 billion, subject to reduction in connection with issuances of junior lien indebtedness by us after April 15, 2016, the date of the first borrowing base redetermination. No adjustment to the total commitment has occurred or will occur for any junior lien indebtedness issuance that occurs before April 15, 2016.
CY2015	us-gaap	Line Of Credit Facility Covenant Terms LineOfCreditFacilityCovenantTerms	a requirement that we maintain, as of the last day of each fiscal quarter, a net debt to capitalization ratio (as defined in the amended credit agreement) that does not exceed 65%. While it is required to be secured by a portion of our oil and natural gas properties, the amended credit facility requires us to maintain, as of the last day of each fiscal quarter (i) a first lien secured leverage ratio (as defined in the amended credit agreement) of 3.5 to 1.0 through 2017 and no more than 3.0 to 1.0 thereafter, and (ii) an interest rate coverage ratio (as defined in the amended credit agreement) of at least 1.1 to 1.0 through the first quarter of 2017, increasing to 1.25 to 1.0 by the end of 2017.
CY2014Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	381000000	USD
CY2015Q4	us-gaap	Long Term Debt Current LongTermDebtCurrent	381000000	USD
CY2014Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	11360000000	USD
CY2015Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	9325000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	4323000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	381000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	1128000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	1104000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	878000000	USD
CY2015Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	1892000000	USD
CY2014Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	11154000000	USD
CY2015Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	10354000000	USD
CY2013	us-gaap	Loss Contingency Accrual Provision LossContingencyAccrualProvision	0	USD
CY2014	us-gaap	Loss Contingency Accrual Provision LossContingencyAccrualProvision	234000000	USD
CY2015	us-gaap	Loss Contingency Accrual Provision LossContingencyAccrualProvision	340000000	USD
CY2014Q4	us-gaap	Minority Interest MinorityInterest	1302000000	USD
CY2015Q4	us-gaap	Minority Interest MinorityInterest	259000000	USD
CY2015Q4	us-gaap	Minority Interest Ownership Percentage By Parent MinorityInterestOwnershipPercentageByParent	0.50
CY2013	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1097000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1817000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1066000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-2967000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	454000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-3451000000	USD
CY2013	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	4614000000	USD
CY2014	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	4634000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	1234000000	USD
CY2013	us-gaap	Net Income Loss NetIncomeLoss	724000000	USD
CY2014	us-gaap	Net Income Loss NetIncomeLoss	1917000000	USD
CY2015	us-gaap	Net Income Loss NetIncomeLoss	-14685000000	USD
CY2013	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	170000000	USD
CY2014	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	139000000	USD
CY2015	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	50000000	USD
CY2013	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	474000000	USD
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1273000000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-14856000000	USD
CY2014	us-gaap	Net Income Loss Available To Common Stockholders Diluted NetIncomeLossAvailableToCommonStockholdersDiluted	1444000000	USD
CY2013	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-627000000	USD
CY2014	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-277000000	USD
CY2015	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-179000000	USD
CY2015Q4	us-gaap	Number Of Interest Rate Derivatives Held NumberOfInterestRateDerivativesHeld	0	Derivatives
CY2015	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	2	Segment
CY2014Q4	us-gaap	Oil And Gas Joint Interest Billing Receivables Current OilAndGasJointInterestBillingReceivablesCurrent	691000000	USD
CY2015Q4	us-gaap	Oil And Gas Joint Interest Billing Receivables Current OilAndGasJointInterestBillingReceivablesCurrent	230000000	USD
CY2014Q4	us-gaap	Oil And Gas Property Full Cost Method Net OilAndGasPropertyFullCostMethodNet	30143000000	USD
CY2015Q4	us-gaap	Oil And Gas Property Full Cost Method Net OilAndGasPropertyFullCostMethodNet	12089000000	USD
CY2013	us-gaap	Oil And Gas Sales Revenue OilAndGasSalesRevenue	8626000000	USD
CY2014	us-gaap	Oil And Gas Sales Revenue OilAndGasSalesRevenue	10354000000	USD
CY2015	us-gaap	Oil And Gas Sales Revenue OilAndGasSalesRevenue	5391000000	USD
CY2013	us-gaap	Operating Income Loss OperatingIncomeLoss	2069000000	USD
CY2014	us-gaap	Operating Income Loss OperatingIncomeLoss	3477000000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	-18919000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	9000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	4000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	1000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	2000000	USD
CY2015Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	2000000	USD
CY2014Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	451000000	USD
CY2015Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	413000000	USD
CY2014Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	249000000	USD
CY2015Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	126000000	USD
CY2014Q4	us-gaap	Other Assets Current OtherAssetsCurrent	207000000	USD
CY2015Q4	us-gaap	Other Assets Current OtherAssetsCurrent	160000000	USD
CY2014Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	497000000	USD
CY2015Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	197000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	20000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	19000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	44000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	-4000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	5000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	3000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	-3000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci For Sale Of Securities Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIForSaleOfSecuritiesTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-20000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-23000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesNetOfTax	-24000000	USD
CY2013	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	12000000	USD
CY2014	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	14000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment From Aoci On Derivatives Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAOCIOnDerivativesTax	15000000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	2000000	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	1000000	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	20000000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	1000000	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	0	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodTax	12000000	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	-6000000	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2013	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	-4000000	USD
CY2014	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2015	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2014Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	3061000000	USD
CY2015Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	2219000000	USD
CY2014Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	679000000	USD
CY2015Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	409000000	USD
CY2013	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-122000000	USD
CY2014	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-220000000	USD
CY2015	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-244000000	USD
CY2013	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	26000000	USD
CY2014	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	22000000	USD
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	8000000	USD
CY2014Q4	us-gaap	Other Receivables OtherReceivables	226000000	USD
CY2015Q4	us-gaap	Other Receivables OtherReceivables	226000000	USD
CY2015	us-gaap	Other Tax Expense Benefit OtherTaxExpenseBenefit	2800000000	USD
CY2013	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	10000000	USD
CY2014	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	26000000	USD
CY2015	us-gaap	Participating Securities Distributed And Undistributed Earnings Loss Basic ParticipatingSecuritiesDistributedAndUndistributedEarningsLossBasic	0	USD
CY2013	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	91000000	USD
CY2014	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	53000000	USD
CY2015	us-gaap	Payments For Proceeds From Hedge Financing Activities PaymentsForProceedsFromHedgeFinancingActivities	0	USD
CY2013	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	44000000	USD
CY2014	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	17000000	USD
CY2015	us-gaap	Payments For Proceeds From Investments PaymentsForProceedsFromInvestments	10000000	USD
CY2013	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	-4000000	USD
CY2014	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	3000000	USD
CY2015	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	0	USD
CY2013	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	2141000000	USD
CY2014	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	3362000000	USD
CY2015	us-gaap	Payments Of Debt Extinguishment Costs PaymentsOfDebtExtinguishmentCosts	508000000	USD
CY2013	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	233000000	USD
CY2014	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	234000000	USD
CY2013	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-105000000	USD
CY2014	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-34000000	USD
CY2015	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-41000000	USD
CY2013	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	115000000	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	118000000	USD
CY2013	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	215000000	USD
CY2014	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	173000000	USD
CY2015	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	85000000	USD
CY2013	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	171000000	USD
CY2014	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	171000000	USD
CY2015	us-gaap	Payments Of Dividends Preferred Stock And Preference Stock PaymentsOfDividendsPreferredStockAndPreferenceStock	171000000	USD
CY2013	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	1032000000	USD
CY2014	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	1311000000	USD
CY2015	us-gaap	Payments To Acquire Oil And Gas Property And Equipment PaymentsToAcquireOilAndGasPropertyAndEquipment	533000000	USD
CY2013	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	972000000	USD
CY2014	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	726000000	USD
CY2015	us-gaap	Payments To Acquire Other Property Plant And Equipment PaymentsToAcquireOtherPropertyPlantAndEquipment	143000000	USD
CY2013	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	7190000000	USD
CY2014	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	6667000000	USD
CY2015	us-gaap	Payments To Acquire Productive Assets PaymentsToAcquireProductiveAssets	3600000000	USD
CY2013	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	5604000000	USD
CY2014	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	4581000000	USD
CY2015	us-gaap	Payments To Explore And Develop Oil And Gas Properties PaymentsToExploreAndDevelopOilAndGasProperties	3095000000	USD
CY2015Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Current Liabilities PensionAndOtherPostretirementDefinedBenefitPlansCurrentLiabilities	3000000	USD
CY2013	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	171000000	USD
CY2014	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	171000000	USD
CY2015	us-gaap	Preferred Stock Dividends Income Statement Impact PreferredStockDividendsIncomeStatementImpact	171000000	USD
CY2014Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2015Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.01
CY2013	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	69000000	USD
CY2014	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	447000000	USD
CY2015	us-gaap	Preferred Stock Redemption Premium PreferredStockRedemptionPremium	0	USD
CY2014Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2015Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	20000000	shares
CY2014Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	7251515	shares
CY2015Q4	us-gaap	Preferred Stock Shares Outstanding PreferredStockSharesOutstanding	7251515	shares
CY2014Q4	us-gaap	Preferred Stock Value PreferredStockValue	3062000000	USD
CY2015Q4	us-gaap	Preferred Stock Value PreferredStockValue	3062000000	USD
CY2015Q4	us-gaap	Price Risk Cash Flow Hedge Unrealized Gain Loss To Be Reclassified During Next12 Months PriceRiskCashFlowHedgeUnrealizedGainLossToBeReclassifiedDuringNext12Months	21000000	USD
CY2014	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3460000000	USD
CY2013	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2014	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	394000000	USD
CY2015	us-gaap	Proceeds From Issuance Of Other Long Term Debt ProceedsFromIssuanceOfOtherLongTermDebt	0	USD
CY2013	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	7669000000	USD
CY2014	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	7406000000	USD
CY2015	us-gaap	Proceeds From Lines Of Credit ProceedsFromLinesOfCredit	0	USD
CY2013	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	6000000	USD
CY2014	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2015	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2014	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	239000000	USD
CY2015	us-gaap	Proceeds From Sale Of Equity Method Investments ProceedsFromSaleOfEquityMethodInvestments	0	USD
CY2013	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	3467000000	USD
CY2015	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	2119000000	USD
CY2014	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	5813000000	USD
CY2015	us-gaap	Proceeds From Sale Of Oil And Gas Property And Equipment ProceedsFromSaleOfOilAndGasPropertyAndEquipment	189000000	USD
CY2013	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	922000000	USD
CY2014	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	1003000000	USD
CY2015	us-gaap	Proceeds From Sale Of Other Productive Assets ProceedsFromSaleOfOtherProductiveAssets	89000000	USD
CY2013	us-gaap	Profit Loss ProfitLoss	894000000	USD
CY2014	us-gaap	Profit Loss ProfitLoss	2056000000	USD
CY2015	us-gaap	Profit Loss ProfitLoss	-14635000000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	71465000000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	73568000000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	32515000000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	14298000000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	3083000000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Other PropertyPlantAndEquipmentOther	2927000000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Other Accumulated Depreciation PropertyPlantAndEquipmentOtherAccumulatedDepreciation	804000000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Other Accumulated Depreciation PropertyPlantAndEquipmentOtherAccumulatedDepreciation	813000000	USD
CY2014Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	2279000000	USD
CY2015Q4	us-gaap	Property Plant And Equipment Other Net PropertyPlantAndEquipmentOtherNet	2114000000	USD
CY2013	us-gaap	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	170900000	Mcfe
CY2014	us-gaap	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	145200000	Mcfe
CY2015	us-gaap	Proved Developed And Undeveloped Reserve Production Energy ProvedDevelopedAndUndevelopedReserveProductionEnergy	102400000	Mcfe
CY2015Q4	us-gaap	Proved Developed Reserves Boe1 ProvedDevelopedReservesBOE1	830000000	Mcfe
CY2013	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2000000	USD
CY2014	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2000000	USD
CY2015	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4000000	USD
CY2013	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	7682000000	USD
CY2014	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	7788000000	USD
CY2015	us-gaap	Repayments Of Lines Of Credit RepaymentsOfLinesOfCredit	0	USD
CY2013	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	141000000	USD
CY2014	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	0	USD
CY2015	us-gaap	Repayments Of Long Term Capital Lease Obligations RepaymentsOfLongTermCapitalLeaseObligations	0	USD
CY2013	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	55000000	USD
CY2014	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	USD
CY2015	us-gaap	Repayments Of Other Long Term Debt RepaymentsOfOtherLongTermDebt	0	USD
CY2014Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	38000000	USD
CY2015Q4	us-gaap	Restricted Cash And Cash Equivalents At Carrying Value RestrictedCashAndCashEquivalentsAtCarryingValue	0	USD
CY2013	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	900	Employee
CY2013	us-gaap	Restructuring Charges RestructuringCharges	248000000	USD
CY2014	us-gaap	Restructuring Charges RestructuringCharges	7000000	USD
CY2015	us-gaap	Restructuring Charges RestructuringCharges	36000000	USD
CY2013	us-gaap	Restructuring Costs RestructuringCosts	175000000	USD
CY2014	us-gaap	Restructuring Costs RestructuringCosts	-15000000	USD
CY2015	us-gaap	Restructuring Costs RestructuringCosts	-14000000	USD
CY2013	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	1574000000	USD
CY2014	us-gaap	Results Of Operations Transportation Costs ResultsOfOperationsTransportationCosts	2174000000	USD
CY2014Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1483000000	USD
CY2015Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	-13202000000	USD
CY2013	us-gaap	Revenue Oil And Gas Services RevenueOilAndGasServices	895000000	USD
CY2014	us-gaap	Revenue Oil And Gas Services RevenueOilAndGasServices	546000000	USD
CY2015	us-gaap	Revenue Oil And Gas Services RevenueOilAndGasServices	0	USD
CY2013	us-gaap	Revenues Revenues	19080000000	USD
CY2014	us-gaap	Revenues Revenues	23125000000	USD
CY2015	us-gaap	Revenues Revenues	12764000000	USD
CY2013	us-gaap	Segment Reporting Disclosure Of Major Customers SegmentReportingDisclosureOfMajorCustomers	0
CY2013	us-gaap	Severance Costs1 SeveranceCosts1	50000000	USD
CY2013	us-gaap	Share Based Compensation ShareBasedCompensation	98000000	USD
CY2014	us-gaap	Share Based Compensation ShareBasedCompensation	59000000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	78000000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1552000	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	1304000	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableNumber	2045000	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	18.82
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	18.71
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercisable Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableWeightedAverageExercisePrice	19.61
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	3000000	USD
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	11000000	USD
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Exercises In Period Total Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisesInPeriodTotalIntrinsicValue	0	USD
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	131000	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	28000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Expirations In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExpirationsInPeriod	416000	shares
CY2013	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	5264000	shares
CY2014	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	994000	shares
CY2015	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Grants In Period Gross ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodGross	1208000	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	2000000	USD
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	41000000	USD
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	5000000	USD
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Intrinsic Value ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingIntrinsicValue	0	USD
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	481000	shares
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5268000	shares
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	4599000	shares
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Number ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber	5377000	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	12.69
CY2013Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.28
CY2014Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.55
CY2015Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Options Outstanding Weighted Average Exercise Price ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingWeightedAverageExercisePrice	19.37
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	10.82
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	18.71
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Exercises In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExercisesInPeriodWeightedAverageExercisePrice	18.13
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	19.31
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	18.97
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Expirations In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsExpirationsInPeriodWeightedAverageExercisePrice	18.46
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	21.05
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Forfeitures In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsForfeituresInPeriodWeightedAverageExercisePrice	0.00
CY2013	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	19.32
CY2014	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	24.43
CY2015	us-gaap	Share Based Compensation Arrangements By Share Based Payment Award Options Grants In Period Weighted Average Exercise Price ShareBasedCompensationArrangementsByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageExercisePrice	18.37
CY2013Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	13000000	USD
CY2014Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	1000000	USD
CY2015Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Intrinsic Value1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableIntrinsicValue1	0	USD
CY2013Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P1Y11M19D
CY2014Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y8M13D
CY2015Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Exercisable Weighted Average Remaining Contractual Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsExercisableWeightedAverageRemainingContractualTerm1	P5Y26D
CY2014	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares	313000	shares
CY2015	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Nonvested Options Forfeited Number Of Shares SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsNonvestedOptionsForfeitedNumberOfShares	0	shares
CY2012Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P11M16D
CY2013Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P6Y7M29D
CY2014Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P7Y10D
CY2015Q4	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Options Outstanding Weighted Average Remaining Contractual Term2 SharebasedCompensationArrangementBySharebasedPaymentAwardOptionsOutstandingWeightedAverageRemainingContractualTerm2	P5Y9M18D
CY2013	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	-599000	shares
CY2014	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	-2529000	shares
CY2015	us-gaap	Stock Issued During Period Shares Restricted Stock Award Net Of Forfeitures StockIssuedDuringPeriodSharesRestrictedStockAwardNetOfForfeitures	-163000	shares
CY2013	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	323000	shares
CY2014	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	1281000	shares
CY2015	us-gaap	Stock Issued During Period Shares Stock Options Exercised StockIssuedDuringPeriodSharesStockOptionsExercised	15000	shares
CY2014Q4	us-gaap	Stockholders Equity StockholdersEquity	16903000000	USD
CY2015Q4	us-gaap	Stockholders Equity StockholdersEquity	2138000000	USD
CY2013Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	18140000000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	18205000000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2397000000	USD
CY2014	us-gaap	Stockholders Equity Note Spinoff Transaction StockholdersEquityNoteSpinoffTransaction	-270000000	USD
CY2013	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	229000000	USD
CY2014	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	232000000	USD
CY2015	us-gaap	Taxes Excluding Income And Excise Taxes TaxesExcludingIncomeAndExciseTaxes	99000000	USD
CY2014Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1614312	shares
CY2015Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	1437724	shares
CY2014Q4	us-gaap	Treasury Stock Value TreasuryStockValue	37000000	USD
CY2015Q4	us-gaap	Treasury Stock Value TreasuryStockValue	33000000	USD
CY2013	us-gaap	Unamortized Costs Capitalized Less Related Deferred Income Taxes Exceed Ceiling Limitation Expense UnamortizedCostsCapitalizedLessRelatedDeferredIncomeTaxesExceedCeilingLimitationExpense	0	USD
CY2014	us-gaap	Unamortized Costs Capitalized Less Related Deferred Income Taxes Exceed Ceiling Limitation Expense UnamortizedCostsCapitalizedLessRelatedDeferredIncomeTaxesExceedCeilingLimitationExpense	0	USD
CY2015	us-gaap	Unamortized Costs Capitalized Less Related Deferred Income Taxes Exceed Ceiling Limitation Expense UnamortizedCostsCapitalizedLessRelatedDeferredIncomeTaxesExceedCeilingLimitationExpense	18238000000	USD
CY2014Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	130000000	USD
CY2015Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	74000000	USD
CY2013	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	71000000	USD
CY2014	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	1102000000	USD
CY2015	us-gaap	Unrealized Gain Loss On Derivatives And Commodity Contracts UnrealizedGainLossOnDerivativesAndCommodityContracts	932000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	599000000	USD
CY2013Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	644000000	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	303000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	280000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2014	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	354000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	50000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	15000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	13000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	27000000	USD
CY2013	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	30000000	USD
CY2014	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2015	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2014Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	5000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits Interest On Income Taxes Accrued UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued	20000000	USD
CY2013	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	653000000	shares
CY2014	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	772000000	shares
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	662000000	shares
CY2013	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	653000000	shares
CY2014	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	659000000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	662000000	shares
CY2015	us-gaap	Prior Period Reclassification Adjustment Description PriorPeriodReclassificationAdjustmentDescription	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-align:justify;text-indent:30px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;color:#000000;font-style:italic;">Reclassifications</font></div><div style="line-height:120%;padding-top:12px;text-align:justify;text-indent:30px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;color:#000000;">Certain reclassifications have been made to our consolidated financial statements for 2014 and 2013 to conform to the presentation used for the 2015 consolidated financial statements. Beginning in the fourth quarter of 2015, we have reclassified our presentation of third party transportation and gathering costs to report the costs as a component of operating expenses in the accompanying statements of operations. Previously, these costs were reflected as deductions to oil, natural gas and NGL sales. The net effect of this reclassification did not impact our previously reported net income, stockholders’ equity or cash flows; however, previously reported oil, natural gas and NGL sales have increased from the amounts previously reported, and total operating expenses have increased by those same amounts. The following table reflects the reclassifications made:</font></div><div style="line-height:120%;padding-top:6px;text-align:left;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="9" rowspan="1"></td></tr><tr><td width="62%" rowspan="1" colspan="1"></td><td width="2%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="15%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="2%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="15%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="7" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-weight:bold;">Years Ended December 31,</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-weight:bold;">2014</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-weight:bold;">2013</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="7" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-weight:bold;">$ in millions</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Oil, natural gas and NGL sales, previously reported</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">8,180</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">7,052</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;padding-left:12px;text-indent:-12px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Reclassification of oil, natural gas and NGL gathering, processing and transportation expenses</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">2,174</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">1,574</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;padding-left:24px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Oil, natural gas and NGL sales, as currently reported</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">10,354</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">8,626</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div><font style="font-family:Arial;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;padding-top:12px;text-align:justify;text-indent:30px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;color:#000000;">The corresponding amounts have been reflected in oil, natural gas and NGL gathering, processing and transportation expenses for 2014 and 2013 as shown below:</font></div><div style="line-height:120%;padding-top:6px;text-align:left;font-size:10pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:100%;border-collapse:collapse;text-align:left;"><tr><td colspan="9" rowspan="1"></td></tr><tr><td width="62%" rowspan="1" colspan="1"></td><td width="2%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="15%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="2%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td><td width="15%" rowspan="1" colspan="1"></td><td width="1%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="7" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-weight:bold;">Years Ended December 31,</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-weight:bold;">2014</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="3" style="vertical-align:bottom;border-bottom:1px solid #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-weight:bold;">2013</font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="7" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:center;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-weight:bold;">$ in millions</font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;padding-left:12px;text-indent:-12px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Oil, natural gas and NGL gathering, processing and transportation expenses, previously reported</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-top:2px;padding-bottom:2px;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">—</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;padding-left:12px;text-indent:-12px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Reclassification of oil, natural gas and NGL gathering, processing and transportation expenses</font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">2,174</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td colspan="2" style="vertical-align:bottom;padding-left:2px;padding-top:2px;padding-bottom:2px;" rowspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">1,574</font></div></td><td style="vertical-align:bottom;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr><tr><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;padding-left:36px;text-indent:-12px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">Oil, natural gas and NGL gathering, processing and transportation expenses, as currently reported</font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">2,174</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td><td style="vertical-align:bottom;background-color:#cceeff;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="overflow:hidden;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"> </font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;padding-left:2px;padding-top:2px;padding-bottom:2px;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">$</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;padding-top:2px;padding-bottom:2px;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:right;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;">1,574</font></div></td><td style="vertical-align:bottom;border-bottom:3px double #000000;background-color:#cceeff;border-top:1px solid #000000;" rowspan="1" colspan="1"><div style="text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div></td></tr></table></div><font style="font-family:Arial;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;padding-top:12px;text-align:justify;text-indent:30px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;color:#000000;">In November 2015, the FASB issued an accounting standards update, which requires deferred tax liabilities and assets be classified as non-current in a classified statement of financial position. This standards update is effective for annual periods, including interim periods within those annual periods, beginning after December 15, 2016. Early adoption is permitted and we elected to adopt the updated standard effective December 31, 2015. This change in accounting principle is preferable since the current presentation does not generally align with the time period in which the deferred tax amounts are expected to be recognized. A retrospective change to the December 31, 2014 consolidated balance sheet as previously presented is required pursuant to this updated standard. We retrospectively adjusted the December 31, 2014 consolidated balance sheet and reclassified </font><font style="font-family:Arial;font-size:10pt;color:#000000;">$207 million</font><font style="font-family:Arial;font-size:10pt;color:#000000;"> of our current deferred income tax liabilities to noncurrent deferred income tax liabilities. </font></div></div>
CY2015	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:12px;text-align:justify;text-indent:29px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;color:#000000;font-style:italic;">Accounting Estimates</font></div><div style="line-height:120%;padding-top:12px;text-align:justify;text-indent:29px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;color:#000000;">The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the dates of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Actual results could differ from those estimates.</font></div><div style="line-height:120%;padding-top:12px;text-align:justify;text-indent:29px;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;color:#000000;">Estimates of oil and natural gas reserves and their values, future production rates and future costs and expenses are the most significant of our estimates. The accuracy of any reserve estimate is a function of the quality of data available and of engineering and geological interpretation and judgment. In addition, estimates of reserves may be revised based on actual production, results of subsequent exploration and development activities, recent commodity prices, operating costs and other factors. These revisions could materially affect our financial statements. The volatility of commodity prices results in increased uncertainty inherent in these estimates and assumptions. Changes in oil, natural gas or NGL prices could result in actual results differing significantly from our estimates.</font></div></div>

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$EXE
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2015 Q4 Form 10-K Financial Statement

#000089512616000395 Filed on February 25, 2016

Income Statement

Balance Sheet

Cashflow Statement

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$EXE Stock $exe

2015 Q4 Form 10-K Financial Statement

#000089512616000395 Filed on February 25, 2016

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$EXE
Stock $exe