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Consolidated Statements Of Cash Flows (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Cash flows from operating activities: |  |  |
Net earnings (loss) | $ 1,691 us-gaap_ProfitLoss | $ (20)us-gaap_ProfitLoss | $ (206)us-gaap_ProfitLoss
Earnings (loss) from discontinued operations, net of tax |  |  | 21 us-gaap_IncomeLossFromDiscontinuedOperationsNetOfTax
Adjustments to reconcile net earnings (loss) to net cash from operating activities: |  |  |
Depreciation, depletion and amortization | 3,319 us-gaap_DepreciationDepletionAndAmortization | 2,780 us-gaap_DepreciationDepletionAndAmortization | 2,811 us-gaap_DepreciationDepletionAndAmortization
Asset impairments | 1,953 us-gaap_AssetImpairmentCharges | 1,976 us-gaap_AssetImpairmentCharges | 2,024 us-gaap_AssetImpairmentCharges
Gains and losses on asset sales | (1,072)us-gaap_GainLossOnDispositionOfAssets1 | 9 us-gaap_GainLossOnDispositionOfAssets1 | (13)us-gaap_GainLossOnDispositionOfAssets1
Deferred income tax expense (benefit) | 1,891 us-gaap_DeferredIncomeTaxExpenseBenefit | 97 us-gaap_DeferredIncomeTaxExpenseBenefit | (184)us-gaap_DeferredIncomeTaxExpenseBenefit
Derivatives and other financial instruments | (2,070)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet | 135 us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet | (660)us-gaap_DerivativeInstrumentsNotDesignatedAsHedgingInstrumentsGainLossNet
Cash settlements on derivatives and financial instruments | 104 dvn_CashSettlementsOnDerivativesAndFinancialInstruments | 277 dvn_CashSettlementsOnDerivativesAndFinancialInstruments | 865 dvn_CashSettlementsOnDerivativesAndFinancialInstruments
Other noncash charges | 457 us-gaap_OtherNoncashExpense | 309 us-gaap_OtherNoncashExpense | 253 us-gaap_OtherNoncashExpense
Net change in working capital | 50 us-gaap_IncreaseDecreaseInOperatingCapital | (298)us-gaap_IncreaseDecreaseInOperatingCapital | (50)us-gaap_IncreaseDecreaseInOperatingCapital
Change in long-term other assets | (421)us-gaap_IncreaseDecreaseInOtherOperatingAssets | 10 us-gaap_IncreaseDecreaseInOtherOperatingAssets | (36)us-gaap_IncreaseDecreaseInOtherOperatingAssets
Change in long-term other liabilities | 79 us-gaap_IncreaseDecreaseInOtherOperatingLiabilities | 161 us-gaap_IncreaseDecreaseInOtherOperatingLiabilities | 105 us-gaap_IncreaseDecreaseInOtherOperatingLiabilities
Cash from operating activities - continuing operations | 5,981 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | 5,436 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations | 4,930 us-gaap_NetCashProvidedByUsedInOperatingActivitiesContinuingOperations
Cash from operating activities - discontinued operations |  |  | 26 us-gaap_CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations
Net cash from operating activities | 5,981 us-gaap_NetCashProvidedByUsedInOperatingActivities | 5,436 us-gaap_NetCashProvidedByUsedInOperatingActivities | 4,956 us-gaap_NetCashProvidedByUsedInOperatingActivities
Cash flows from investing activities: |  |  |
Capital expenditures | (6,988)us-gaap_PaymentsToAcquireProductiveAssets | (6,758)us-gaap_PaymentsToAcquireProductiveAssets | (8,225)us-gaap_PaymentsToAcquireProductiveAssets
Acquisitions of property, equipment and businesses | (6,462)us-gaap_PaymentsToAcquirePropertyPlantAndEquipment |  |
Proceeds from property and equipment divestitures | 5,120 us-gaap_ProceedsFromSaleOfProductiveAssets | 419 us-gaap_ProceedsFromSaleOfProductiveAssets | 1,468 us-gaap_ProceedsFromSaleOfProductiveAssets
Purchases of short-term investments |  | (1,076)us-gaap_PaymentsToAcquireShortTermInvestments | (4,106)us-gaap_PaymentsToAcquireShortTermInvestments
Redemptions of short-term investments |  | 3,419 us-gaap_ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments | 3,266 us-gaap_ProceedsFromSaleMaturityAndCollectionOfShorttermInvestments
Redemptions of long-term investments | 57 us-gaap_ProceedsFromSaleAndMaturityOfHeldToMaturitySecurities |  |
Other | 89 us-gaap_PaymentsForProceedsFromOtherInvestingActivities | (3)us-gaap_PaymentsForProceedsFromOtherInvestingActivities | 14 us-gaap_PaymentsForProceedsFromOtherInvestingActivities
Cash from investing activities - continuing operations | (8,184)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (3,999)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations | (7,583)us-gaap_NetCashProvidedByUsedInInvestingActivitiesContinuingOperations
Cash from investing activities - discontinued operations |  |  | 57 us-gaap_CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations
Net cash from investing activities | (8,184)us-gaap_NetCashProvidedByUsedInInvestingActivities | (3,999)us-gaap_NetCashProvidedByUsedInInvestingActivities | (7,526)us-gaap_NetCashProvidedByUsedInInvestingActivities
Cash flows from financing activities: |  |  |
Proceeds from borrowings of long-term debt, net of issuance costs | 5,340 us-gaap_ProceedsFromDebtNetOfIssuanceCosts | 2,233 us-gaap_ProceedsFromDebtNetOfIssuanceCosts | 3,208 us-gaap_ProceedsFromDebtNetOfIssuanceCosts
Net short-term debt repayments | (385)us-gaap_ProceedsFromRepaymentsOfCommercialPaper | (1,872)us-gaap_ProceedsFromRepaymentsOfCommercialPaper | (537)us-gaap_ProceedsFromRepaymentsOfCommercialPaper
Long-term debt repayments | (7,189)us-gaap_RepaymentsOfLongTermDebt |  | (750)us-gaap_RepaymentsOfLongTermDebt
Proceeds from stock option exercises | 93 us-gaap_ProceedsFromStockOptionsExercised | 3 us-gaap_ProceedsFromStockOptionsExercised | 27 us-gaap_ProceedsFromStockOptionsExercised
Proceeds from issuance of subsidiary units | 410 us-gaap_SaleOfStockConsiderationReceivedPerTransaction |  |
Dividends paid on common stock | (386)us-gaap_PaymentsOfOrdinaryDividends | (348)us-gaap_PaymentsOfOrdinaryDividends | (324)us-gaap_PaymentsOfOrdinaryDividends
Distributions to noncontrolling interests | (235)us-gaap_PaymentsToMinorityShareholders |  |
Other | (2)us-gaap_ProceedsFromPaymentsForOtherFinancingActivities | 4 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities | 5 us-gaap_ProceedsFromPaymentsForOtherFinancingActivities
Net cash from financing activities | (2,354)us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 20 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations | 1,629 us-gaap_NetCashProvidedByUsedInFinancingActivitiesContinuingOperations
Effect of exchange rate changes on cash | (29)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents | (28)us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents | 23 us-gaap_EffectOfExchangeRateOnCashAndCashEquivalents
Net change in cash and cash equivalents | (4,586)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | 1,429 us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease | (918)us-gaap_CashAndCashEquivalentsPeriodIncreaseDecrease
Cash and cash equivalents at beginning of period | 6,066 us-gaap_CashAndCashEquivalentsAtCarryingValue | 4,637 us-gaap_CashAndCashEquivalentsAtCarryingValue | 5,555 us-gaap_CashAndCashEquivalentsAtCarryingValue
Cash and cash equivalents at end of period | $ 1,480 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 6,066 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 4,637 us-gaap_CashAndCashEquivalentsAtCarryingValue

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- Definition Amount of cash inflow (outflow) from operating activities, excluding discontinued operations. Operating activity cash flows include transactions, adjustments, and changes in value not defined as investing or financing activities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3521-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 25 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3536-108585 + Details
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- Definition Other expenses or losses included in net income that result in no cash outflows or inflows in the period and are not separately disclosed. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The net cash outflow or inflow from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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- Definition Cash outflow in the form of ordinary dividends to common shareholders, preferred shareholders and noncontrolling interests, generally out of earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow associated with the acquisition of long-lived, physical assets that are used in the normal conduct of business to produce goods and services and not intended for resale; includes cash outflows to pay for construction of self-constructed assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition The cash outflow for securities or other assets acquired, which qualify for treatment as an investing activity and are to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585 + Details
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- Definition Amount of cash outflow to a noncontrolling interest. Includes, but not limited to, reduction of noncontrolling interest ownership. Excludes dividends paid to the noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 + Details
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- Definition The cash inflow from additional borrowings, net of cash paid to third parties in connection with debt origination. + References No definition available. + Details
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- Definition The net cash inflow or outflow from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3095-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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- Definition The net cash inflow or cash outflow from issuing (borrowing) and repaying commercial paper. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 9 -Subparagraph c -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3098-108585 + Details
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- Definition Amount of cash inflow from the sale or maturity of long-term held-to-maturity securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6871852&loc=d3e26853-111562 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow from sales, maturities, prepayments, calls and collections of all investments, including securities and other assets, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 + Details
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- Definition The cash inflow from the sale of property, plant and equipment (capital expenditures), software, and other intangible assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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- Definition The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3255-108585 + Details
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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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