Devon Energy (DVN) 10-Q 6 May 15 2015 Q1 Quarterly report Financial data

Document_And_Entity_Informatio

Document And Entity Information	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Apr. 22, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Document Period End Date	31-Mar-15
Amendment Flag	FALSE
Entity Registrant Name	DEVON ENERGY CORP/DE
Entity Central Index Key	1090012
Current Fiscal Year End Date	-19
Document Fiscal Year Focus	2015
Entity Filer Category	Large Accelerated Filer
Document Fiscal Period Focus	Q1
Entity Common Stock, Shares Outstanding		411.1

Consolidated_Comprehensive_Sta

Consolidated Comprehensive Statements Of Earnings (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Consolidated Comprehensive Statements Of Earnings [Abstract]
Oil, gas and NGL sales	$1,339	$2,557
Oil, gas and NGL derivatives	294	-320
Marketing and midstream revenues	1,632	1,488
Total operating revenues	3,265	3,725
Lease operating expenses	553	598
Marketing and midstream operating expenses	1,439	1,305
General and administrative expenses	251	211
Production and property taxes	108	137
Depreciation, depletion and amortization	930	739
Asset impairments	5,460
Restructuring costs		37
Gains and losses on asset sales		-15
Other operating items	19	23
Total operating expenses	8,760	3,035
Operating income (loss)	-5,495	690
Net financing costs	117	112
Other nonoperating items	12	18
Earnings (loss) before income taxes	-5,624	560
Income tax expense (benefit)	-2,035	231
Net earnings (loss)	-3,589	329
Net earnings attributable to noncontrolling interests	10	5
Net earnings (loss) attributable to Devon	-3,599	324
Net earnings (loss) per share attributable to Devon:
Basic	($8.88)	$0.80
Diluted	($8.88)	$0.79
Comprehensive earnings (loss):
Net earnings (loss)	-3,589	329
Other comprehensive loss, net of tax:
Foreign currency translation	-302	-298
Pension and postretirement plans	4	3
Other comprehensive loss, net of tax	-298	-295
Comprehensive earnings (loss)	-3,887	34
Comprehensive earnings attributable to noncontrolling interests	10	5
Comprehensive earnings (loss) attributable to Devon	($3,897)	$29

Consolidated_Statements_Of_Cas

Consolidated Statements Of Cash Flows (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Cash flows from operating activities:
Net earnings (loss)	($3,589)	$329
Adjustments to reconcile net earnings (loss) to net cash from operating activities:
Depreciation, depletion and amortization	930	739
Asset impairments	5,460
Gains and losses on asset sales		-15
Deferred income tax expense (benefit)	-2,047	208
Derivatives and other financial instruments	-430	307
Cash settlements on derivatives and financial instruments	719	-54
Other noncash charges	225	123
Net change in working capital	215	-152
Change in long-term other assets	141	-88
Change in long-term other liabilities	24	13
Net cash from operating activities	1,648	1,410
Cash flows from investing activities:
Capital expenditures	-1,717	-1,583
Acquisitions of property, equipment and businesses	-404	-5,935
Divestitures of property and equipment	2	142
Redemptions of long-term investments		57
Other	3	37
Net cash from investing activities	-2,116	-7,282
Cash flows from financing activities:
Borrowings of long-term debt, net of issuance costs	957	3,346
Net borrowings of short-term debt	15	257
Repayments of long-term debt	-487	-1,577
Stock option exercises		11
Sale of subsidiary units	569
Issuance of subsidiary units	2
Dividends paid on common stock	-99	-90
Distributions to noncontrolling interests	-53	-100
Other	-12	-3
Net cash from financing activities	892	1,844
Effect of exchange rate changes on cash	-46	-11
Net change in cash and cash equivalents	378	-4,039
Cash and cash equivalents at beginning of period	1,480	6,066
Cash and cash equivalents at end of period	$1,858	$2,027

Consolidated_Balance_Sheets

Consolidated Balance Sheets (USD $)	Mar. 31, 2015		Dec. 31, 2014
In Millions, unless otherwise specified
Current assets:
Cash and cash equivalents	$1,858		$1,480
Accounts receivable	1,663		1,959
Derivatives, at fair value	1,706		1,993
Income taxes receivable			522
Other current assets	579		544
Total current assets	5,806		6,498
Oil and gas, based on full-cost accounting:
Subject to amortization	75,952		75,738
Not subject to amortization	2,656		2,752
Total oil and gas	78,608		78,490
Midstream and other	10,109		9,695
Total property and equipment, at cost	88,717		88,185
Less accumulated depreciation, depletion and amortization	-57,262		-51,889
Property and equipment, net	31,455		36,296
Goodwill	6,328		6,303
Other long-term assets	1,753		1,540
Total assets	45,342		50,637
Current liabilities:
Accounts payable	1,335		1,400
Revenues and royalties payable	1,054		1,193
Short-term debt	1,448	[1]	1,432	[1]
Deferred income taxes	638		730
Other current liabilities	1,085		1,180
Total current liabilities	5,560		5,935
Long-term debt	10,301		9,830
Asset retirement obligations	1,373		1,339
Other long-term liabilities	922		948
Deferred income taxes	4,167		6,244
Stockholders' equity:
Common stock, $0.10 par value. Authorized 1.0 billion shares; issued 411 million and 409 million shares in 2015 and 2014, respectively	41		41
Additional paid-in capital	4,542		4,088
Retained earnings	12,933		16,631
Accumulated other comprehensive earnings	481		779
Total stockholders' equity attributable to Devon	17,997		21,539
Noncontrolling interests	5,022		4,802
Total stockholders' equity	23,019		26,341
Commitments and contingencies (Note 17)
Total liabilities and stockholders' equity	$45,342		$50,637
[1]	Short-term debt as of March 31, 2015 consists of $948 million of commercial paper and $500 million floating rate due on December 15, 2015. Short-term debt as of December 31, 2014 consists of $932 million of commercial paper and $500 million floating rate due on December 15, 2015.

Consolidated_Balance_Sheets_Pa

Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Consolidated Balance Sheets [Abstract]
Common stock, par value (in dollars per share)	$0.10	$0.10
Common stock, shares authorized (in shares)	1,000,000,000	1,000,000,000
Common stock, shares issued (in shares)	411,000,000	409,000,000

Consolidated_Statements_Of_Sto

Consolidated Statements Of Stockholders' Equity (USD $)	Common Stock [Member]	Additional Paid-In Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Earnings [Member]	Treasury Stock [Member]	Noncontrolling Interests [Member]	Total
In Millions
Balance, at Dec. 31, 2013	$41	$3,780	$15,410	$1,268			$20,499
Balance, shares, at Dec. 31, 2013	406
Net earnings (loss)			324			5	329
Other comprehensive loss, net of tax				-295			-295
Stock option exercises		11					11
Restricted stock grants, net of cancellations, shares	2
Common stock repurchased					-3		-3
Common stock retired		-3			3
Common stock dividends			-90				-90
Share-based compensation		47					47
Share-based compensation tax benefits		1					1
Acquisition of noncontrolling interests						4,652	4,652
Distributions to noncontrolling interests						-100	-100
Other						-5	-5
Balance, at Mar. 31, 2014	41	3,836	15,644	973		4,552	25,046
Balance, shares, at Mar. 31, 2014	408
Balance, at Dec. 31, 2014	41	4,088	16,631	779		4,802	26,341
Balance, shares, at Dec. 31, 2014	409
Net earnings (loss)			-3,599			10	-3,589
Other comprehensive loss, net of tax				-298			-298
Restricted stock grants, net of cancellations, shares	2
Common stock repurchased					-18		-18
Common stock retired		-18			18
Common stock dividends			-99				-99
Share-based compensation		48					48
Share-based compensation tax benefits		1					1
Subsidiary equity transactions		423				263	686
Distributions to noncontrolling interests						-53	-53
Balance, at Mar. 31, 2015	$41	$4,542	$12,933	$481		$5,022	$23,019
Balance, shares, at Mar. 31, 2015	411

Summary_Of_Significant_Account

Summary Of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Summary Of Significant Accounting Policies [Abstract]
Summary Of Significant Accounting Policies	1.     Summary of Significant Accounting Policies
	The accompanying unaudited financial statements and notes of Devon Energy Corporation (“Devon”) have been prepared pursuant to the rules and regulations of the SEC. Pursuant to such rules and regulations, certain disclosures normally included in financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S.”) have been omitted. The accompanying financial statements and notes should be read in conjunction with the financial statements and notes included in Devon’s 2014 Annual Report on Form 10-K.
	The accompanying unaudited interim financial statements furnished in this report reflect all adjustments that are, in the opinion of management, necessary for a fair statement of Devon’s results of operations and cash flows for the three-month periods ended March 31, 2015 and 2014 and Devon’s financial position as of March 31, 2015.
	Recently Issued Accounting Standards not yet Adopted
	In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers (Topic 606). The update provides guidance concerning the recognition and measurement of revenue from contracts with customers. Its objective is to increase the usefulness of information in the financial statements regarding the nature, timing and uncertainty of revenues. The standard permits the use of either the retrospective or cumulative effect transition method. Devon has not yet selected a transition method and is evaluating the impact this standard will have on its consolidated financial statements and related disclosures. The FASB recently proposed a one-year delay which will make the update effective for Devon beginning on January 1, 2018.
	In February 2015, the FASB issued Accounting Standards Update 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis. The update provides additional guidance to reporting entities in evaluating whether certain legal entities, such as limited partnerships, limited liability corporations and securitization structures, should be consolidated. The update is considered to be an improvement on current accounting requirements as it reduces the number of existing consolidation models. The update is effective for Devon beginning on January 1, 2016, and Devon is currently evaluating the impact this standard will have on its consolidated financial statements and related disclosures.
	In April 2015, the FASB issued Accounting Standards Update 2015-03, Interest – Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs (Topic 835). The update requires debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the carrying amount of that debt liability. The standard should be applied retrospectively and is effective for Devon beginning on January 1, 2016.

Acquisitions_And_Divestitures

Acquisitions And Divestitures	3 Months Ended
	Mar. 31, 2015
Acquisitions And Divestitures [Abstract]
Acquisitions And Divestitures	2.    Acquisitions and Divestitures
	Acquisition of GeoSouthern and Formation of EnLink
	On February 28, 2014, Devon completed its acquisition of interests in certain affiliates of GeoSouthern Energy Corporation (“GeoSouthern”). On March 7, 2014, Devon, Crosstex Energy, Inc. and Crosstex Energy, LP (together with Crosstex Energy, Inc., “Crosstex”) completed a business combination to combine substantially all of Devon’s U.S. midstream assets with Crosstex’s assets to form a new midstream business. The new business consists of EnLink Midstream, LLC (the “General Partner”) and EnLink Midstream Partners, LP (“EnLink”), which are both controlled by Devon and are publicly traded entities.
	The following unaudited pro forma financial information was prepared assuming both the GeoSouthern acquisition and the EnLink formation occurred on January 1, 2014. The pro forma information has been included for comparative purposes only and is not intended to reflect the actual results of operations that would have occurred if the business combination and acquisition had been completed at the date indicated. In addition, it does not project Devon’s results of operations for any future period.
		Three Months Ended
		31-Mar-14
		(Millions)
	Total operating revenues	$	4,372
	Net earnings	$	347
	Noncontrolling interests	$	18
	Net earnings attributable to Devon	$	329
	Net earnings per common share attributable to Devon	$	0.81
	EnLink Acquisitions and Dropdowns
	The following table summarizes EnLink’s acquisition and dropdown activity for the first quarter of 2015:
				Purchase Price		Allocation
				(Millions)		(Millions)
	Date	Acquiree		Cash	EnLink Units	PP&E	Goodwill	Intangibles	Other
	31-Jan	LPC Crude Oil Marketing LLC		$100	-	$29	$25	$49	($3)
	17-Feb	General Partner’s 25% interest in EnLink Midstream Holdings, LP (“EMH”)		-	$925	-	-	-	-
	16-Mar	Coronado Midstream Holdings LLC (“Coronado”)		$242	$360	$306	-	$294	$2
	In addition, on April 1, 2015, EnLink acquired the Victoria Express Pipeline and related truck terminal and storage assets (“VEX”) from Devon for approximately $180 million in cash and equity, subject to certain adjustments. EnLink also assumed approximately $35 million in certain construction costs to expand the system to full capacity.

Derivative_Financial_Instrumen

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2015
Derivative Financial Instruments [Abstract]
Derivative Financial Instruments	3.     Derivative Financial Instruments
	Objectives and Strategies
	Devon periodically enters into derivative financial instruments with respect to a portion of its oil, gas and NGL production to hedge future prices received. Additionally, Devon and EnLink periodically enter into derivative financial instruments with respect to a portion of their oil, gas and NGL marketing activities. These commodity derivative financial instruments include financial price swaps, basis swaps, costless price collars and call options. Devon periodically enters into interest rate swaps to manage its exposure to interest rate volatility. Devon periodically enters into foreign exchange forward contracts to manage its exposure to fluctuations in exchange rates.
	Devon does not intend to hold or issue derivative financial instruments for speculative trading purposes and has elected not to designate any of its derivative instruments for hedge accounting treatment.
	Counterparty Credit Risk
	By using derivative financial instruments, Devon is exposed to credit risk. Credit risk is the failure of the counterparty to perform under the terms of the derivative contract. To mitigate this risk, the hedging instruments are placed with a number of counterparties whom Devon believes are acceptable credit risks. It is Devon’s policy to enter into derivative contracts only with investment-grade rated counterparties deemed by management to be competent and competitive market makers. Additionally, Devon’s derivative contracts contain provisions that provide for collateral payments, depending on levels of exposure and the credit rating of the counterparty.
	As of March 31, 2015 and December 31, 2014, Devon held $487 million and $524 million, respectively, of cash collateral which represented the estimated fair value of certain derivative positions in excess of Devon’s credit guidelines. The collateral is reported in other current liabilities in the accompanying consolidated balance sheets.
	Commodity Derivatives
	As of March 31, 2015, Devon had the following open oil derivative positions. The first table presents Devon’s oil derivatives that settle against the average of the prompt month NYMEX West Texas Intermediate (“WTI”) futures price. The second table presents Devon’s oil derivatives that settle against the Western Canadian Select, West Texas Sour and Midland Sweet indices.
			Price Swaps					Price Collars							Call Options Sold
	Period		Volume (Bbls/d)		Weighted Average Price ($/Bbl)			Volume (Bbls/d)		Weighted Average Floor Price ($/Bbl)			Weighted Average Ceiling Price ($/Bbl)		Volume (Bbls/d)	Weighted Average Price ($/Bbl)
	Q2-Q4 2015		106,442		$	91.07		31,500		$	89.67		$	97.84	28,000	$	116.43
	Q1-Q4 2016		-		$	-		-		$	-		$	-	18,500	$	103.11
			Oil Basis Swaps
	Period		Index		Volume (Bbls/d)		Weighted Average Differential to WTI ($/Bbl)
	Q2-Q4 2015		Western Canadian Select		36,320		$	-16.35
	Q2-Q4 2015		West Texas Sour		8,000		$	-3.68
	Q2-Q4 2015		Midland Sweet		16,331		$	-2.84
	Q1-Q4 2016		West Texas Sour		1,000		$	-1.5
	As of March 31, 2015, Devon had the following open natural gas derivative positions. The first table presents Devon’s natural gas derivatives that settle against the Inside FERC first of the month Henry Hub index. The second table presents Devon’s natural gas derivatives that settle against the Panhandle Eastern Pipe Line, El Paso Natural Gas and Houston Ship Channel indices.
			Price Swaps					Price Collars							Call Options Sold
	Period		Volume (MMBtu/d)		Weighted Average Price ($/MMBtu)			Volume (MMBtu/d)		Weighted Average Floor Price ($/MMBtu)			Weighted Average Ceiling Price ($/MMBtu)		Volume (MMBtu/d)	Weighted Average Price ($/MMBtu)
	Q2-Q4 2015		250,000		$	4.32		391,964		$	3.74		$	4.04	550,000	$	5.09
	Q1-Q4 2016		-		$	-		-		$	-		$	-	400,000	$	5
			Natural Gas Basis Swaps
	Period		Index		Volume (MMBtu/d)		Weighted Average Differential to Henry Hub ($/MMBtu)
	Q2-Q4 2015		Panhandle Eastern Pipe Line		100,000		$	-0.28
	Q2-Q4 2015		El Paso Natural Gas		70,000		$	-0.11
	Q2-Q4 2015		Houston Ship Channel		200,000		$	0.01
	Q1-Q4 2016		Panhandle Eastern Pipe Line		40,000		$	-0.33
	Q1-Q4 2016		El Paso Natural Gas		15,000		$	-0.13
	Q1-Q4 2016		Houston Ship Channel		30,000		$	0.11
	As of March 31, 2015, the following were open derivative positions associated with gas processing and fractionation at EnLink. EnLink’s NGL positions settle by purity product against the average of the prompt month OPIS Mont Belvieu, Texas index.
	Period		Product		Volume (Total)				Weighted Average Price Paid			Weighted Average Price Received
	Q2 2015-Q4 2016		Ethane		1,113	MBbls		$	0.28/gal			Index
	Q2 2015-Q4 2016		Propane		1,170	MBbls			Index		$	0.95/gal
	Q2 2015-Q1 2016		Normal Butane		117	MBbls			Index		$	0.78/gal
	Q2 2015-Q1 2016		Natural Gasoline		101	MBbls			Index		$	1.32/gal
	Interest Rate Derivatives
	As of March 31, 2015, Devon had the following open interest rate derivative positions:
	Notional			Rate Received		Rate Paid		Expiration
	(Millions)
	$	100		Three Month LIBOR		0.92%		Dec-16
	$	100		1.76%		Three Month LIBOR		Jan-19
	Foreign Currency Derivatives
	As of March 31, 2015, Devon had the following open foreign currency derivative position:
	Forward Contract
	Currency		Contract Type		CAD Notional			Weighted Average Fixed Rate Received		Expiration
					(Millions)			(CAD-USD)
	Canadian Dollar		Sell		$	1,884		0.799		Jun-15
	Financial Statement Presentation
	The following table presents the net gains and losses recognized in the accompanying consolidated comprehensive statements of earnings associated with derivative financial instruments.
			Comprehensive Statements of		Three Months Ended March 31,
			Earnings Caption		2015			2014
					(Millions)
	Oil, gas and NGL commodity derivatives		Oil, gas and NGL derivatives		$	294		$	-320
	Midstream commodity derivatives		Marketing and midstream revenues			2			-1
	Interest rate derivatives		Other nonoperating items			1			-
	Foreign currency derivatives		Other nonoperating items			133			14
	Net gains (losses) recognized in comprehensive statements of earnings				$	430		$	-307
	The following table presents the derivative fair values included in the accompanying consolidated balance sheets.
			Balance Sheet Caption		31-Mar-15			31-Dec-14
					(Millions)
	Asset derivatives:
Oil, gas and NGL commodity derivatives		Derivatives, at fair value		$	1,668		$	1,967
Oil, gas and NGL commodity derivatives		Other long-term assets			2			1
Midstream commodity derivatives		Derivatives, at fair value			14			17
Midstream commodity derivatives		Other long-term assets			8			10
Interest rate derivatives		Derivatives, at fair value			2			1
Interest rate derivatives		Other long-term assets			1			-
Foreign currency derivatives		Derivatives, at fair value			22			8
Total asset derivatives				$	1,717		$	2,004
Liability derivatives:
Oil, gas and NGL commodity derivatives		Other current liabilities		$	45		$	25
Oil, gas and NGL commodity derivatives		Other long-term liabilities			7			26
Midstream commodity derivatives		Other current liabilities			3			3
Midstream commodity derivatives		Other long-term liabilities			2			2
Interest rate derivatives		Other current liabilities			1			1
Total liability derivatives				$	58		$	57

ShareBased_Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2015
Share-based Compensation [Abstract]
Share-Based Compensation	4.     Share-Based Compensation
	The following table presents the effects of share-based compensation included in Devon’s accompanying consolidated comprehensive statements of earnings. Devon’s gross general and administrative expense for the first three months of 2015 and 2014 includes $12 million and $1 million, respectively, of unit-based compensation related to grants made under EnLink’s long-term incentive plans.
	The vesting for certain share-based awards was accelerated in the first quarter of 2014 in conjunction with the divestiture of Devon’s Canadian conventional assets. The associated expense for these accelerated awards is included in restructuring costs in the accompanying consolidated comprehensive statements of earnings.
			Three Months Ended March 31,
			2015			2014
			(Millions)
	Gross general and administrative expense		$	68		$	57
	Share-based compensation expense capitalized pursuant to the
	full cost method of accounting for oil and gas properties		$	15		$	13
	Related income tax benefit		$	14		$	14
	Under its 2009 Long-Term Incentive Plan, as amended, Devon granted share-based awards to certain employees in the first quarter of 2015. The following sections include information related to these awards.
	Restricted Stock Awards and Units
	The following table presents a summary of Devon’s unvested restricted stock awards and units.
				Restricted Stock Awards & Units		Weighted Average Grant-Date Fair Value
				(Thousands)
	Unvested at December 31, 2014			4,304		$	60.85
	Granted			2,613		$	63.97
	Vested			-674		$	60.78
	Forfeited			-101		$	60.85
	Unvested at March 31, 2015			6,142		$	62.18
	As of March 31, 2015, Devon’s unrecognized compensation cost related to unvested restricted stock awards and units was $302 million. Such cost is expected to be recognized over a weighted-average period of 3.0 years.
	Performance-Based Restricted Stock Awards
	The following table presents a summary of Devon’s performance-based restricted stock awards.
				Performance Restricted Stock Awards		Weighted Average Grant-Date Fair Value
				(Thousands)
	Unvested at December 31, 2014			380		$	59.41
	Granted			205		$	64.18
	Vested			-59		$	61.33
	Unvested at March 31, 2015			526		$	61.06
	As of March 31, 2015, Devon’s unrecognized compensation cost related to these awards was $10 million. Such cost is expected to be recognized over a weighted-average period of 3.4 years.
	Performance Share Units
	The following table presents a summary of the grant-date fair values of performance share units granted in 2015 and the related assumptions.
		2015
	Grant-date fair value	$	81.99	-	$	85.05
	Risk-free interest rate	1.06%
	Volatility factor	26.2%
	Contractual term (in years)	2.89
	The following table presents a summary of Devon’s performance share units.
				Performance Share Units		Weighted Average Grant-Date Fair Value
				(Thousands)
	Unvested at December 31, 2014			1,477		$	70.90
	Granted			786		$	84.14
	Vested			-337		$	66.00
	Forfeited			-14		$	74.76
	Unvested at March 31, 2015 (1)			1,912		$	76.27
	____________________________
		-1		A maximum of 3.8 million common shares could be awarded based upon Devon’s final total shareholder return ranking.
	As of March 31, 2015, Devon’s unrecognized compensation cost related to unvested units was $74 million. Such cost is expected to be recognized over a weighted-average period of 2.4 years.
	EnLink Share-Based Awards
	In March 2015, the General Partner and EnLink issued restricted incentive units as bonus payments to officers and certain employees for 2014. The combined grant fair value was $7 million, and the total cost was recognized in the first quarter of 2015 due to the awards vesting immediately.
	As of March 31, 2015, the General Partner and EnLink both had unrecognized compensation cost related to unvested restricted incentive units of $27 million. Such cost is expected to be recognized for the General Partner and EnLink over a weighted-average period of 2.1 and 2.2 years, respectively. Additionally, the General Partner and EnLink both had unrecognized compensation cost related to unvested performance units of $4 million. Such cost is expected to be recognized over a weighted-average period of 2.1 years for both the General Partner and EnLink.

Asset_Impairments

Asset Impairments	3 Months Ended
	Mar. 31, 2015
Asset Impairments [Abstract]
Asset Impairments	5.     Asset Impairments
	In the first quarter of 2015, Devon recognized asset impairments as presented below.
		Three Months Ended March 31, 2015
		Gross		Net of Taxes
		(Millions)
	U.S. oil and gas assets	$	5,458	$	3,466
	Other assets		2		1
	Total asset impairments	$	5,460	$	3,467
	Oil and Gas Impairments
	Under the full cost method of accounting, capitalized costs of oil and gas properties, net of accumulated DD&A and deferred income taxes, may not exceed the full cost “ceiling” at the end of each quarter. The ceiling is calculated separately for each country and is based on the present value of estimated future net cash flows from proved oil and gas reserves, discounted at 10% per annum, net of related tax effects. Estimated future net cash flows are calculated using end-of-period costs and an unweighted arithmetic average of commodity prices in effect on the first day of each of the previous 12 months.
	The oil and gas impairments resulted primarily from a decline in the U.S. full cost ceiling. The lower ceiling value resulted from decreases in the 12-month average trailing prices for oil, gas and NGLs, which reduced proved reserves and proved reserves values.
	Other Impairments
	Due to the significant decline in oil prices during the first quarter of 2015, Devon impaired its pipeline line fill inventory, as the carrying amount exceeded its estimated fair value, which was determined based on the WTI spot price.

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Taxes [Abstract]
Income Taxes	6.     Income Taxes
	The following table presents Devon’s total income tax expense (benefit) and a reconciliation of its effective income tax rate to the U.S. statutory income tax rate.
		Three Months Ended March 31,
		2015		2014
	Total income tax expense (benefit) (millions)	$	-2,035	$	231
	U.S. statutory income tax rate		-35%		35%
	Taxation on Canadian operations		0%		-3%
	State income taxes		-1%		1%
	Taxes on General Partner formation		0%		9%
	Other		0%		-1%
	Effective income tax rate		-36%		41%
	In the first quarter of 2014, Devon recorded a $48 million deferred tax liability in conjunction with the formation of the General Partner, which impacted the effective tax rate as reflected in the table above.

Net_Earnings_Loss_Per_Share_At

Net Earnings (Loss) Per Share Attributable To Devon	3 Months Ended
	Mar. 31, 2015
Net earnings (loss) per share attributable to Devon:
Net Earnings (Loss) Per Share Attributable To Devon	7.     Net Earnings (Loss) Per Share Attributable to Devon
	The following table reconciles net earnings (loss) attributable to Devon and common shares outstanding used in the calculations of basic and diluted net earnings per share.
						Earnings (loss)
		Earnings (loss)		Common Shares		per  Share
		(Millions, except per share amounts)
	Three Months Ended March 31, 2015:
	Net loss attributable to Devon	$	-3,599		410
	Attributable to participating securities		-1		-4
	Basic net loss per share		-3,600		406	$	-8.88
	Dilutive effect of potential common shares issuable		-		-
	Diluted net loss per share	$	-3,600		406	$	-8.88
	Three Months Ended March 31, 2014:
	Net earnings attributable to Devon	$	324		407
	Attributable to participating securities		-2		-4
	Basic net earnings per share		322		403	$	0.80
	Dilutive effect of potential common shares issuable		-		2
	Diluted net earnings per share	$	322		405	$	0.79
	Certain options to purchase shares of Devon’s common stock are excluded from the dilution calculation because the options are antidilutive. These excluded options totaled 4.1 million shares and 6.3 million shares for the three months ended March 31, 2015 and 2014, respectively.

Other_Comprehensive_Earnings

Other Comprehensive Earnings	3 Months Ended
	Mar. 31, 2015
Other Comprehensive Earnings [Abstract]
Other Comprehensive Earnings	8.     Other Comprehensive Earnings
	Components of other comprehensive earnings consist of the following:
		Three Months Ended March 31,
		2015		2014
		(Millions)
	Foreign currency translation:
	Beginning accumulated foreign currency translation	$	983	$	1,448
	Change in cumulative translation adjustment		-337		-313
	Income tax benefit		35		15
	Ending accumulated foreign currency translation		681		1,150
	Pension and postretirement benefit plans:
	Beginning accumulated pension and postretirement benefits		-204		-180
	Recognition of net actuarial loss and prior service cost in earnings (1)		6		5
	Income tax expense		-2		-2
	Ending accumulated pension and postretirement benefits		-200		-177
	Accumulated other comprehensive earnings, net of tax	$	481	$	973
	__________________________
	(1)  These accumulated other comprehensive earnings components are included in the computation of net periodic benefit cost, which is a component of general and administrative expenses on the accompanying consolidated comprehensive statements of earnings. See Note 14 for additional details.

Supplemental_Information_To_St

Supplemental Information To Statements Of Cash Flows	3 Months Ended
	Mar. 31, 2015
Supplemental Information To Statements Of Cash Flows [Abstract]
Supplemental Information To Statements Of Cash Flows	9.     Supplemental Information to Statements of Cash Flows
		Three Months Ended March 31,
		2015		2014
		(Millions)
	Net change in working capital accounts:
	Accounts receivable	$	404	$	-455
	Income taxes receivable		425		31
	Other current assets		-93		-58
	Accounts payable		-15		20
	Revenues and royalties payable		-236		391
	Other current liabilities		-270		-81
	Net change in working capital	$	215	$	-152
	Interest paid (net of capitalized interest)	$	118	$	137
	Income taxes paid (received)	$	-414	$	38
	On March 7, 2014, Devon completed a business combination to form EnLink. With the exception of a $100 million cash payment to noncontrolling interests, the business combination was a non-monetary transaction. Furthermore, EnLink’s noncash acquisition activity during the first quarter of 2015 included a portion of the Coronado transaction. See Note 2 for additional details.

Accounts_Receivable

Accounts Receivable	3 Months Ended
	Mar. 31, 2015
Accounts Receivable [Abstract]
Accounts Receivable	10.    Accounts Receivable
	The components of accounts receivable include the following:
		31-Mar-15		31-Dec-14
		(Millions)
	Oil, gas and NGL sales	$	556	$	723
	Joint interest billings		451		475
	Marketing and midstream revenues		620		706
	Other		50		71
	Gross accounts receivable		1,677		1,975
	Allowance for doubtful accounts		-14		-16
	Net accounts receivable	$	1,663	$	1,959

Goodwill_And_Other_Intangible_

Goodwill And Other Intangible Assets	3 Months Ended
	Mar. 31, 2015
Goodwill And Other Intangible Assets [Abstract]
Goodwill And Other Intangible Assets	11.    Goodwill and Other Intangible Assets
	See Note 2 for discussion of changes in goodwill and other intangible assets resulting from acquisitions during the first quarter of 2015.
	The following table presents other intangible assets reported in other long-term assets in the accompanying consolidated balance sheets.
		31-Mar-15		31-Dec-14
		(Millions)
	Customer relationships	$	926	$	569
	Accumulated amortization		-48		-36
	Net intangibles	$	878	$	533
	The weighted-average amortization period for intangible assets is 11.1 years. Amortization expense for intangibles was approximately $11.5 million and $1.9 million for the three months ended March 31, 2015 and 2014, respectively.
	The following table summarizes the estimated aggregate amortization expense for the next five years.
	Year	Amortization Amount
			(Millions)
	2015	$	52
	2016	$	67
	2017	$	67
	2018	$	67
	2019	$	66

Debt

Debt	3 Months Ended
	Mar. 31, 2015
Debt [Abstract]
Debt	12.    Debt
	A summary of debt is as follows:
		31-Mar-15			31-Dec-14
		(Millions)
	Devon debt
	Commercial paper	$	948		$	932
	Floating rate due December 15, 2015		500			500
	Floating rate due December 15, 2016		350			350
	8.25% due July 1, 2018		125			125
	2.25% due December 15, 2018		750			750
	6.30% due January 15, 2019		700			700
	4.00% due July 15, 2021		500			500
	3.25% due May 15, 2022		1,000			1,000
	7.50% due September 15, 2027		150			150
	7.875% due September 30, 2031		1,250			1,250
	7.95% due April 15, 2032		1,000			1,000
	5.60% due July 15, 2041		1,250			1,250
	4.75% due May 15, 2042		750			750
	Net discount on debentures and notes		-18			-18
	Total Devon debt		9,255			9,239
	EnLink debt
	Credit facilities		709			237
	2.70% due April 1, 2019		400			400
	7.125% due June 1, 2022		163			163
	4.40% due April 1, 2024		550			550
	5.60% due April 1, 2044		350			350
	5.05% due April 1, 2045		300			300
	Net premium on debentures and notes		22			23
	Total EnLink debt		2,494			2,023
	Total debt		11,749			11,262
	Less amount classified as short-term debt (1)		1,448			1,432
	Total long-term debt	$	10,301		$	9,830
	____________________________
		-1		Short-term debt as of March 31, 2015 consists of $948 million of commercial paper and $500 million floating rate due on December 15, 2015. Short-term debt as of December 31, 2014 consists of $932 million of commercial paper and $500 million floating rate due on December 15, 2015.
	Commercial Paper
	As of March 31, 2015, Devon had $948 million outstanding commercial paper borrowings at an average rate of 0.6%.
	Credit Lines
	Devon has a $3.0 billion syndicated, unsecured revolving line of credit (the “Senior Credit Facility”). As of March 31, 2015, there were no borrowings under the Senior Credit Facility. The Senior Credit Facility contains only one material financial covenant. This covenant requires Devon’s ratio of total funded debt to total capitalization, as defined in the credit agreement, to be no greater than 65%. As of March 31, 2015, Devon was in compliance with this covenant with a debt-to-capitalization ratio of 21.6%.
	EnLink Debt
	All of EnLink’s and the General Partner’s debt is non-recourse to Devon.
	On February 5, 2015, the commitments under EnLink’s $1.0 billion unsecured revolving credit facility were increased to $1.5 billion, and the maturity date was extended by a year to March 6, 2020. As of March 31, 2015, there were $2.9 million in outstanding letters of credit and $709 million outstanding borrowings at an average rate of 1.65% under the $1.5 billion credit facility, leaving approximately $788 million available for future borrowing.
	The General Partner has a $250 million revolving credit facility. As of March 31, 2015, the General Partner had no outstanding borrowings under the $250 million credit facility. EnLink and the General Partner are in compliance with all financial covenants as of March 31, 2015.

Asset_Retirement_Obligations

Asset Retirement Obligations	3 Months Ended
	Mar. 31, 2015
Asset Retirement Obligations [Abstract]
Asset Retirement Obligations	13.    Asset Retirement Obligations
	The schedule below summarizes changes in Devon’s asset retirement obligations.
		Three Months Ended March 31,
		2015		2014
			(Millions)
	Asset retirement obligations as of beginning of period	$	1,399	$	2,228
	Liabilities incurred		23		45
	Liabilities settled		-13		-14
	Revision of estimated obligation		62		69
	Liabilities assumed by others		-12		-9
	Accretion expense on discounted obligation		19		29
	Foreign currency translation adjustment		-53		-51
	Asset retirement obligations as of end of period		1,425		2,297
	Less current portion		52		79
	Asset retirement obligations, long-term	$	1,373	$	2,218
	The change in the asset retirement obligation from March 31, 2014 to March 31, 2015 is primarily the result of Devon’s Canadian and U.S. divestitures during 2014.

Retirement_Plans

Retirement Plans	3 Months Ended
	Mar. 31, 2015
Retirement Plans [Abstract]
Retirement Plans	14.    Retirement Plans
	The following table presents the components of net periodic benefit cost for Devon’s pension benefit plans. There was no net periodic benefit cost for postretirement benefit plans for all periods presented below.
		Pension Benefits
		Three Months Ended March 31,
		2015		2014
		(Millions)
	Service cost	$	8	$	7
	Interest cost		13		14
	Expected return on plan assets		-15		-13
	Amortization of prior service cost (1)		1		1
	Net actuarial loss (1)		5		4
	Net periodic benefit cost (2)	$	12	$	13
	__________________________
	(1)  These net periodic benefit costs were reclassified out of other comprehensive earnings in the current period.
	(2)  Net periodic benefit cost is a component of general and administrative expenses on the accompanying consolidated comprehensive statements of earnings.

Stockholders_Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2015
Stockholders' Equity [Abstract]
Stockholders' Equity	15.    Stockholders’ Equity
	Dividends
	Devon paid common stock dividends of $99 million and $90 million in the first three months of 2015 and 2014, respectively. The quarterly cash dividend was $0.22 per share in the first quarter of 2014. Devon increased the dividend rate to $0.24 per share in the second quarter of 2014.

Noncontrolling_Interests

Noncontrolling Interests	3 Months Ended
	Mar. 31, 2015
Noncontrolling Interests [Abstract]
Noncontrolling interests	16.    Noncontrolling Interests
	Subsidiary Equity Transactions
	In February 2015, EnLink acquired a 25% equity interest in EMH from the General Partner in exchange for units valued at approximately $925 million. In March 2015, EnLink acquired Coronado for $602 million, of which $360 million represented approximately 13.4 million EnLink units. Furthermore, in March 2015, Devon conducted an underwritten secondary public offering of 22.8 million common units representing limited partner interests in EnLink, raising net proceeds of approximately $569 million. As a result of these transactions, Devon’s ownership interest in EnLink decreased from 49% at December 31, 2014 to 34% at March 31, 2015. Any net gains or losses and related income taxes resulting from these transactions have been recorded as an adjustment to equity, and the change in ownership reflected as an adjustment to noncontrolling interests.
	In April 2015, as part of the secondary public offering, underwriters fully exercised their option to purchase an additional 3.4 million EnLink common units from Devon, resulting in an incremental $85 million of net proceeds raised.

Commitments_And_Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments And Contingencies [Abstract]
Commitments And Contingencies	17.    Commitments and Contingencies
	Devon is party to various legal actions arising in the normal course of business. Matters that are probable of unfavorable outcome to Devon and which can be reasonably estimated are accrued. Such accruals are based on information known about the matters, Devon’s estimates of the outcomes of such matters and its experience in contesting, litigating and settling similar matters. None of the actions are believed by management to involve future amounts that would be material to Devon’s financial position or results of operations after consideration of recorded accruals. Actual amounts could differ materially from management’s estimates.
	Royalty Matters
	Numerous oil and natural gas producers and related parties, including Devon, have been named in various lawsuits alleging royalty underpayments. The suits allege that the producers and related parties used below-market prices, made improper deductions, used improper measurement techniques and entered into gas purchase and processing arrangements with affiliates that resulted in underpayment of royalties in connection with oil, natural gas and NGLs produced and sold. Devon does not currently believe that it is subject to material exposure with respect to such royalty matters.
	Environmental Matters
	Devon is subject to certain laws and regulations relating to environmental remediation activities associated with past operations, such as the Comprehensive Environmental Response, Compensation, and Liability Act and similar state statutes. In response to liabilities associated with these activities, loss accruals primarily consist of estimated uninsured remediation costs. Devon’s monetary exposure for environmental matters is not expected to be material.
	Other Matters
	Devon is involved in other various routine legal proceedings incidental to its business. However, to Devon’s knowledge, there were no other material pending legal proceedings to which Devon is a party or to which any of its property is subject.

Fair_Value_Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2015
Fair Value Measurements [Abstract]
Fair Value Measurements	18.    Fair Value Measurements
	The following tables provide carrying value and fair value measurement information for certain of Devon’s financial assets and liabilities. The carrying values of cash, accounts receivable, other current receivables, accounts payable, other current payables and accrued expenses included in the accompanying consolidated balance sheets approximated fair value at March 31, 2015 and December 31, 2014. Therefore, such financial assets and liabilities are not presented in the following tables. Additionally, information regarding the fair values of oil and gas and midstream assets is provided in Note 5.
						Fair Value Measurements Using:
		Carrying		Total Fair		Level 1		Level 2		Level 3
		Amount		Value		Inputs		Inputs		Inputs
			(Millions)
	March 31, 2015 assets (liabilities):
	Cash equivalents	$	1,321	$	1,321	$	716	$	605	$	-
	Oil, gas and NGL commodity derivatives	$	1,670	$	1,670	$	-	$	1,670	$	-
	Oil, gas and NGL commodity derivatives	$	-52	$	-52	$	-	$	-52	$	-
	Midstream commodity derivatives	$	22	$	22	$	-	$	22	$	-
	Midstream commodity derivatives	$	-5	$	-5	$	-	$	-5	$	-
	Interest rate derivatives	$	3	$	3	$	-	$	3	$	-
	Interest rate derivatives	$	-1	$	-1	$	-	$	-1	$	-
	Foreign currency derivatives	$	22	$	22	$	-	$	22	$	-
	Debt	$	-11,749	$	-13,217	$	-	$	-13,217	$	-
	Capital lease obligations	$	-19	$	-19	$	-	$	-19	$	-
	December 31, 2014 assets (liabilities):
	Cash equivalents	$	950	$	950	$	340	$	610	$	-
	Oil, gas and NGL commodity derivatives	$	1,968	$	1,968	$	-	$	1,968	$	-
	Oil, gas and NGL commodity derivatives	$	-51	$	-51	$	-	$	-51	$	-
	Midstream commodity derivatives	$	27	$	27	$	-	$	27	$	-
	Midstream commodity derivatives	$	-5	$	-5	$	-	$	-5	$	-
	Interest rate derivatives	$	1	$	1	$	-	$	1	$	-
	Interest rate derivatives	$	-1	$	-1	$	-	$	-1	$	-
	Foreign currency derivatives	$	8	$	8	$	-	$	8	$	-
	Debt	$	-11,262	$	-12,472	$	-	$	-12,472	$	-
	Capital lease obligations	$	-20	$	-20	$	-	$	-20	$	-
	The following methods and assumptions were used to estimate the fair values in the tables above.
	Level 1 Fair Value Measurements
	Cash equivalents —  Amounts consist primarily of U.S. and Canadian treasury securities and money market investments. The fair value approximates the carrying value.
	Level 2 Fair Value Measurements
	Cash equivalents —  Amounts consist primarily of Canadian agency and provincial securities and commercial paper investments. The fair value approximates the carrying value.
	Commodity, interest rate and foreign currency derivatives — The fair values of commodity, interest rate and foreign currency derivatives are estimated using internal discounted cash flow calculations based upon forward curves and data obtained from independent third parties for contracts with similar terms or data obtained from counterparties to the agreements.
	Debt — Devon’s debt instruments do not actively trade in an established market. The fair values of its debt are estimated based on rates available for debt with similar terms and maturity. The fair values of commercial paper and credit facility balances are the carrying values.
	Capital lease obligations —  The fair value was calculated using inputs from third-party banks.

Segment_Information

Segment Information	3 Months Ended
	Mar. 31, 2015
Segment Information [Abstract]
Segment Information	19.    Segment Information
	Devon manages its operations through distinct operating segments, which are defined primarily by geographic areas. For financial reporting purposes, Devon aggregates its U.S. operating segments into one reporting segment due to the similar nature of the businesses. However, Devon’s Canadian operating segment is reported as a separate reporting segment primarily due to the significant differences between the U.S. and Canadian regulatory environments. Devon’s U.S. and Canadian segments are both primarily engaged in oil and gas exploration and production activities.
	EnLink, combined with the General Partner, is presented as a separate reporting segment. Devon considers EnLink’s operations distinct from the U.S. and Canadian operating segments. Additionally, EnLink has a management team that is primarily responsible for capital and resource allocation decisions.
		U.S.		Canada		EnLink		Eliminations		Total
		(Millions)
	Three Months Ended March 31, 2015:
	Revenues from external customers	$	2,264	$	221	$	780	$	-	$	3,265
	Intersegment revenues	$	-	$	-	$	156	$	-156	$	-
	Depreciation, depletion and amortization	$	713	$	127	$	90	$	-	$	930
	Interest expense	$	87	$	25	$	19	$	-12	$	119
	Asset impairments	$	5,460	$	-	$	-	$	-	$	5,460
	Earnings (loss) before income taxes	$	-5,487	$	-172	$	35	$	-	$	-5,624
	Income tax expense (benefit)	$	-1,993	$	-53	$	11	$	-	$	-2,035
	Net earnings (loss)	$	-3,494	$	-119	$	24	$	-	$	-3,589
	Net earnings attributable to noncontrolling interests	$	-	$	-	$	10	$	-	$	10
	Net earnings (loss) attributable to Devon	$	-3,494	$	-119	$	14	$	-	$	-3,599
	Property and equipment, net	$	19,851	$	6,281	$	5,323	$	-	$	31,455
	Total assets	$	26,926	$	7,625	$	10,893	$	-102	$	45,342
	Capital expenditures	$	1,369	$	224	$	489	$	-	$	2,082
	Three Months Ended March 31, 2014:
	Revenues from external customers	$	2,616	$	684	$	425	$	-	$	3,725
	Intersegment revenues	$	-	$	-	$	298	$	-298	$	-
	Depreciation, depletion and amortization	$	497	$	194	$	48	$	-	$	739
	Interest expense	$	100	$	19	$	5	$	-9	$	115
	Earnings before income taxes	$	396	$	92	$	72	$	-	$	560
	Income tax expense	$	186	$	21	$	24	$	-	$	231
	Net earnings	$	210	$	71	$	48	$	-	$	329
	Net earnings attributable to noncontrolling interests	$	-	$	-	$	5	$	-	$	5
	Net earnings attributable to Devon	$	210	$	71	$	43	$	-	$	324
	Property and equipment, net	$	24,857	$	8,369	$	4,203	$	-	$	37,429
	Total assets	$	30,085	$	13,384	$	9,354	$	-58	$	52,765
	Capital expenditures	$	7,089	$	442	$	82	$	-	$	7,613
	Year Ended December 31, 2014:
	Property and equipment, net	$	24,572	$	6,790	$	4,934	$	-	$	36,296
	Total assets	$	32,147	$	8,517	$	10,097	$	-124	$	50,637

Summary_Of_Significant_Account1

Summary Of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Summary Of Significant Accounting Policies [Abstract]
Recently Issued Accounting Standards Not Yet Adopted	Recently Issued Accounting Standards not yet Adopted
	In May 2014, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update 2014-09, Revenue from Contracts with Customers (Topic 606). The update provides guidance concerning the recognition and measurement of revenue from contracts with customers. Its objective is to increase the usefulness of information in the financial statements regarding the nature, timing and uncertainty of revenues. The standard permits the use of either the retrospective or cumulative effect transition method. Devon has not yet selected a transition method and is evaluating the impact this standard will have on its consolidated financial statements and related disclosures. The FASB recently proposed a one-year delay which will make the update effective for Devon beginning on January 1, 2018.
	In February 2015, the FASB issued Accounting Standards Update 2015-02, Consolidation (Topic 810): Amendments to the Consolidation Analysis. The update provides additional guidance to reporting entities in evaluating whether certain legal entities, such as limited partnerships, limited liability corporations and securitization structures, should be consolidated. The update is considered to be an improvement on current accounting requirements as it reduces the number of existing consolidation models. The update is effective for Devon beginning on January 1, 2016, and Devon is currently evaluating the impact this standard will have on its consolidated financial statements and related disclosures.
	In April 2015, the FASB issued Accounting Standards Update 2015-03, Interest – Imputation of Interest: Simplifying the Presentation of Debt Issuance Costs (Topic 835). The update requires debt issuance costs related to a recognized debt liability be presented on the balance sheet as a direct deduction from the carrying amount of that debt liability. The standard should be applied retrospectively and is effective for Devon beginning on January 1, 2016.

Acquisitions_And_Divestitures_

Acquisitions And Divestitures (Tables)	3 Months Ended
	Mar. 31, 2015
Business Acquisition [Line Items]
Schedule Of Unaudited Proforma Information For General Partner and EnLink And GeoSouthern
		Three Months Ended
		31-Mar-14
		(Millions)
	Total operating revenues	$	4,372
	Net earnings	$	347
	Noncontrolling interests	$	18
	Net earnings attributable to Devon	$	329
	Net earnings per common share attributable to Devon	$	0.81
EnLink [Member]
Business Acquisition [Line Items]
Purchase Price Allocation Of EnLink's Acquisitions And Dropdown Activity
				Purchase Price		Allocation
				(Millions)		(Millions)
	Date	Acquiree		Cash	EnLink Units	PP&E	Goodwill	Intangibles	Other
	31-Jan	LPC Crude Oil Marketing LLC		$100	-	$29	$25	$49	($3)
	17-Feb	General Partner’s 25% interest in EnLink Midstream Holdings, LP (“EMH”)		-	$925	-	-	-	-
	16-Mar	Coronado Midstream Holdings LLC (“Coronado”)		$242	$360	$306	-	$294	$2

Derivative_Financial_Instrumen1

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2015
Derivative [Line Items]
Schedule of Derivative Financial Instruments included in the Consolidated Comprehensive Statements of Earnings
			Comprehensive Statements of		Three Months Ended March 31,
			Earnings Caption		2015			2014
					(Millions)
	Oil, gas and NGL commodity derivatives		Oil, gas and NGL derivatives		$	294		$	-320
	Midstream commodity derivatives		Marketing and midstream revenues			2			-1
	Interest rate derivatives		Other nonoperating items			1			-
	Foreign currency derivatives		Other nonoperating items			133			14
	Net gains (losses) recognized in comprehensive statements of earnings				$	430		$	-307
Schedule of Derivative Financial Instruments included in the Consolidated Balance Sheets
			Balance Sheet Caption		31-Mar-15			31-Dec-14
					(Millions)
	Asset derivatives:
	Oil, gas and NGL commodity derivatives		Derivatives, at fair value		$	1,668		$	1,967
	Oil, gas and NGL commodity derivatives		Other long-term assets			2			1
	Midstream commodity derivatives		Derivatives, at fair value			14			17
	Midstream commodity derivatives		Other long-term assets			8			10
	Interest rate derivatives		Derivatives, at fair value			2			1
	Interest rate derivatives		Other long-term assets			1			-
	Foreign currency derivatives		Derivatives, at fair value			22			8
	Total asset derivatives				$	1,717		$	2,004
	Liability derivatives:
	Oil, gas and NGL commodity derivatives		Other current liabilities		$	45		$	25
	Oil, gas and NGL commodity derivatives		Other long-term liabilities			7			26
	Midstream commodity derivatives		Other current liabilities			3			3
	Midstream commodity derivatives		Other long-term liabilities			2			2
	Interest rate derivatives		Other current liabilities			1			1
	Total liability derivatives				$	58		$	57
Open Oil Derivative Positions [Member]
Derivative [Line Items]
Schedule Of Open Derivative Positions
			Price Swaps					Price Collars							Call Options Sold
	Period		Volume (Bbls/d)		Weighted Average Price ($/Bbl)			Volume (Bbls/d)		Weighted Average Floor Price ($/Bbl)			Weighted Average Ceiling Price ($/Bbl)		Volume (Bbls/d)	Weighted Average Price ($/Bbl)
	Q2-Q4 2015		106,442		$	91.07		31,500		$	89.67		$	97.84	28,000	$	116.43
	Q1-Q4 2016		-		$	-		-		$	-		$	-	18,500	$	103.11
			Oil Basis Swaps
	Period		Index		Volume (Bbls/d)		Weighted Average Differential to WTI ($/Bbl)
	Q2-Q4 2015		Western Canadian Select		36,320		$	-16.35
	Q2-Q4 2015		West Texas Sour		8,000		$	-3.68
	Q2-Q4 2015		Midland Sweet		16,331		$	-2.84
	Q1-Q4 2016		West Texas Sour		1,000		$	-1.5
Open Natural Gas Derivative Positions [Member]
Derivative [Line Items]
Schedule Of Open Derivative Positions
			Price Swaps					Price Collars							Call Options Sold
	Period		Volume (MMBtu/d)		Weighted Average Price ($/MMBtu)			Volume (MMBtu/d)		Weighted Average Floor Price ($/MMBtu)			Weighted Average Ceiling Price ($/MMBtu)		Volume (MMBtu/d)	Weighted Average Price ($/MMBtu)
	Q2-Q4 2015		250,000		$	4.32		391,964		$	3.74		$	4.04	550,000	$	5.09
	Q1-Q4 2016		-		$	-		-		$	-		$	-	400,000	$	5
			Natural Gas Basis Swaps
	Period		Index		Volume (MMBtu/d)		Weighted Average Differential to Henry Hub ($/MMBtu)
	Q2-Q4 2015		Panhandle Eastern Pipe Line		100,000		$	-0.28
	Q2-Q4 2015		El Paso Natural Gas		70,000		$	-0.11
	Q2-Q4 2015		Houston Ship Channel		200,000		$	0.01
	Q1-Q4 2016		Panhandle Eastern Pipe Line		40,000		$	-0.33
	Q1-Q4 2016		El Paso Natural Gas		15,000		$	-0.13
	Q1-Q4 2016		Houston Ship Channel		30,000		$	0.11
Gas Processing And Fractionation Open Positions [Member] | EnLink [Member]
Derivative [Line Items]
Schedule Of Open Derivative Positions
	Period		Product		Volume (Total)				Weighted Average Price Paid			Weighted Average Price Received
	Q2 2015-Q4 2016		Ethane		1,113	MBbls		$	0.28/gal			Index
	Q2 2015-Q4 2016		Propane		1,170	MBbls			Index		$	0.95/gal
	Q2 2015-Q1 2016		Normal Butane		117	MBbls			Index		$	0.78/gal
	Q2 2015-Q1 2016		Natural Gasoline		101	MBbls			Index		$	1.32/gal
Interest Rate Derivatives [Member]
Derivative [Line Items]
Schedule Of Open Derivative Positions
	Notional			Rate Received		Rate Paid		Expiration
	(Millions)
	$	100		Three Month LIBOR		0.92%		Dec-16
	$	100		1.76%		Three Month LIBOR		Jan-19
Foreign Currency Derivatives [Member]
Derivative [Line Items]
Schedule Of Open Derivative Positions
	Forward Contract
	Currency		Contract Type		CAD Notional			Weighted Average Fixed Rate Received		Expiration
					(Millions)			(CAD-USD)
	Canadian Dollar		Sell		$	1,884		0.799		Jun-15

ShareBased_Compensation_Tables

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2015
Share-based Compensation [Abstract]
Schedule Of The Effects Of Share-Based Compensation Included In The Consolidated Comprehensive Statements Of Earnings
			Three Months Ended March 31,
			2015			2014
			(Millions)
	Gross general and administrative expense		$	68		$	57
	Share-based compensation expense capitalized pursuant to the
	full cost method of accounting for oil and gas properties		$	15		$	13
	Related income tax benefit		$	14		$	14
Summary of Unvested Restricted Stock Awards And Units, Including Changes During the Year
				Restricted Stock Awards & Units		Weighted Average Grant-Date Fair Value
				(Thousands)
	Unvested at December 31, 2014			4,304		$	60.85
	Granted			2,613		$	63.97
	Vested			-674		$	60.78
	Forfeited			-101		$	60.85
	Unvested at March 31, 2015			6,142		$	62.18
Summary Of Unvested Performance-Based Restricted Stock Awards, Including Changes During The Year
				Performance Restricted Stock Awards		Weighted Average Grant-Date Fair Value
				(Thousands)
	Unvested at December 31, 2014			380		$	59.41
	Granted			205		$	64.18
	Vested			-59		$	61.33
	Unvested at March 31, 2015			526		$	61.06
Summary Of Performance Share Units Grant-Date Fair Values And Their Related Assumptions
		2015
	Grant-date fair value	$	81.99	-	$	85.05
	Risk-free interest rate	1.06%
	Volatility factor	26.2%
	Contractual term (in years)	2.89
Summary of Unvested Performance Share Units, Including Changes During the Year
				Performance Share Units		Weighted Average Grant-Date Fair Value
				(Thousands)
	Unvested at December 31, 2014			1,477		$	70.90
	Granted			786		$	84.14
	Vested			-337		$	66.00
	Forfeited			-14		$	74.76
	Unvested at March 31, 2015 (1)			1,912		$	76.27
	____________________________
		-1		A maximum of 3.8 million common shares could be awarded based upon Devon’s final total shareholder return ranking.

Asset_Impairments_Tables

Asset Impairments (Tables)	3 Months Ended
	Mar. 31, 2015
Asset Impairments [Abstract]
Schedule Of Asset Impairments
		Three Months Ended March 31, 2015
		Gross		Net of Taxes
		(Millions)
	U.S. oil and gas assets	$	5,458	$	3,466
	Other assets		2		1
	Total asset impairments	$	5,460	$	3,467

Income_Taxes_Tables

Income Taxes (Tables)	3 Months Ended
	Mar. 31, 2015
Income Taxes [Abstract]
Schedule Of Effective Income Tax Reconciliation
		Three Months Ended March 31,
		2015		2014
	Total income tax expense (benefit) (millions)	$	-2,035	$	231
	U.S. statutory income tax rate		-35%		35%
	Taxation on Canadian operations		0%		-3%
	State income taxes		-1%		1%
	Taxes on General Partner formation		0%		9%
	Other		0%		-1%
	Effective income tax rate		-36%		41%

Net_Earnings_Loss_Per_Share_At1

Net Earnings (Loss) Per Share Attributable To Devon (Tables)	3 Months Ended
	Mar. 31, 2015
Net earnings (loss) per share attributable to Devon:
Net Earnings (Loss) Per Share Computations
						Earnings (loss)
		Earnings (loss)		Common Shares		per  Share
		(Millions, except per share amounts)
	Three Months Ended March 31, 2015:
	Net loss attributable to Devon	$	-3,599		410
	Attributable to participating securities		-1		-4
	Basic net loss per share		-3,600		406	$	-8.88
	Dilutive effect of potential common shares issuable		-		-
	Diluted net loss per share	$	-3,600		406	$	-8.88
	Three Months Ended March 31, 2014:
	Net earnings attributable to Devon	$	324		407
	Attributable to participating securities		-2		-4
	Basic net earnings per share		322		403	$	0.80
	Dilutive effect of potential common shares issuable		-		2
	Diluted net earnings per share	$	322		405	$	0.79

Other_Comprehensive_Earnings_T

Other Comprehensive Earnings (Tables)	3 Months Ended
	Mar. 31, 2015
Other Comprehensive Earnings [Abstract]
Components Of Other Comprehensive Earnings
		Three Months Ended March 31,
		2015		2014
		(Millions)
	Foreign currency translation:
	Beginning accumulated foreign currency translation	$	983	$	1,448
	Change in cumulative translation adjustment		-337		-313
	Income tax benefit		35		15
	Ending accumulated foreign currency translation		681		1,150
	Pension and postretirement benefit plans:
	Beginning accumulated pension and postretirement benefits		-204		-180
	Recognition of net actuarial loss and prior service cost in earnings (1)		6		5
	Income tax expense		-2		-2
	Ending accumulated pension and postretirement benefits		-200		-177
	Accumulated other comprehensive earnings, net of tax	$	481	$	973
	__________________________
	(1)  These accumulated other comprehensive earnings components are included in the computation of net periodic benefit cost, which is a component of general and administrative expenses on the accompanying consolidated comprehensive statements of earnings. See Note 14 for additional details

Supplemental_Information_To_St1

Supplemental Information To Statements Of Cash Flows (Tables)	3 Months Ended
	Mar. 31, 2015
Supplemental Information To Statements Of Cash Flows [Abstract]
Schedule Of Supplemental To Cash Flow Information
		Three Months Ended March 31,
		2015		2014
		(Millions)
	Net change in working capital accounts:
	Accounts receivable	$	404	$	-455
	Income taxes receivable		425		31
	Other current assets		-93		-58
	Accounts payable		-15		20
	Revenues and royalties payable		-236		391
	Other current liabilities		-270		-81
	Net change in working capital	$	215	$	-152
	Interest paid (net of capitalized interest)	$	118	$	137
	Income taxes paid (received)	$	-414	$	38

Accounts_Receivable_Tables

Accounts Receivable (Tables)	3 Months Ended
	Mar. 31, 2015
Accounts Receivable [Abstract]
Schedule Of Components Of Accounts Receivable
		31-Mar-15		31-Dec-14
		(Millions)
	Oil, gas and NGL sales	$	556	$	723
	Joint interest billings		451		475
	Marketing and midstream revenues		620		706
	Other		50		71
	Gross accounts receivable		1,677		1,975
	Allowance for doubtful accounts		-14		-16
	Net accounts receivable	$	1,663	$	1,959

Goodwill_And_Other_Intangible_1

Goodwill And Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2015
Goodwill And Other Intangible Assets [Abstract]
Schedule Of Other Intangible Assets
		31-Mar-15		31-Dec-14
		(Millions)
	Customer relationships	$	926	$	569
	Accumulated amortization		-48		-36
	Net intangibles	$	878	$	533
Schedule Of Estimated Future Amortization Expense
	Year	Amortization Amount
			(Millions)
	2015	$	52
	2016	$	67
	2017	$	67
	2018	$	67
	2019	$	66

Debt_Tables

Debt (Tables)	3 Months Ended
	Mar. 31, 2015
Debt [Abstract]
Schedule Of Debt Instruments
		31-Mar-15			31-Dec-14
		(Millions)
	Devon debt
	Commercial paper	$	948		$	932
	Floating rate due December 15, 2015		500			500
	Floating rate due December 15, 2016		350			350
	8.25% due July 1, 2018		125			125
	2.25% due December 15, 2018		750			750
	6.30% due January 15, 2019		700			700
	4.00% due July 15, 2021		500			500
	3.25% due May 15, 2022		1,000			1,000
	7.50% due September 15, 2027		150			150
	7.875% due September 30, 2031		1,250			1,250
	7.95% due April 15, 2032		1,000			1,000
	5.60% due July 15, 2041		1,250			1,250
	4.75% due May 15, 2042		750			750
	Net discount on debentures and notes		-18			-18
	Total Devon debt		9,255			9,239
	EnLink debt
	Credit facilities		709			237
	2.70% due April 1, 2019		400			400
	7.125% due June 1, 2022		163			163
	4.40% due April 1, 2024		550			550
	5.60% due April 1, 2044		350			350
	5.05% due April 1, 2045		300			300
	Net premium on debentures and notes		22			23
	Total EnLink debt		2,494			2,023
	Total debt		11,749			11,262
	Less amount classified as short-term debt (1)		1,448			1,432
	Total long-term debt	$	10,301		$	9,830
	____________________________
		-1		Short-term debt as of March 31, 2015 consists of $948 million of commercial paper and $500 million floating rate due on December 15, 2015. Short-term debt as of December 31, 2014 consists of $932 million of commercial paper and $500 million floating rate due on December 15, 2015.

Asset_Retirement_Obligations_T

Asset Retirement Obligations (Tables)	3 Months Ended
	Mar. 31, 2015
Asset Retirement Obligations [Abstract]
Summary Of Changes In Asset Retirement Obligations
		Three Months Ended March 31,
		2015		2014
			(Millions)
	Asset retirement obligations as of beginning of period	$	1,399	$	2,228
	Liabilities incurred		23		45
	Liabilities settled		-13		-14
	Revision of estimated obligation		62		69
	Liabilities assumed by others		-12		-9
	Accretion expense on discounted obligation		19		29
	Foreign currency translation adjustment		-53		-51
	Asset retirement obligations as of end of period		1,425		2,297
	Less current portion		52		79
	Asset retirement obligations, long-term	$	1,373	$	2,218

Retirement_Plans_Tables

Retirement Plans (Tables)	3 Months Ended
	Mar. 31, 2015
Retirement Plans [Abstract]
Schedule Of Net Periodic Benefit Cost For Pension And Postretirement Benefit Plans
		Pension Benefits
		Three Months Ended March 31,
		2015		2014
		(Millions)
	Service cost	$	8	$	7
	Interest cost		13		14
	Expected return on plan assets		-15		-13
	Amortization of prior service cost (1)		1		1
	Net actuarial loss (1)		5		4
	Net periodic benefit cost (2)	$	12	$	13
	__________________________
	(1)  These net periodic benefit costs were reclassified out of other comprehensive earnings in the current period.
	(2)  Net periodic benefit cost is a component of general and administrative expenses on the accompanying consolidated comprehensive statements of earnings

Fair_Value_Measurements_Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2015
Fair Value Measurements [Abstract]
Schedule Of Carrying Value And Fair Value Measurement Information For Financial Assets And Liabilities
						Fair Value Measurements Using:
		Carrying		Total Fair		Level 1		Level 2		Level 3
		Amount		Value		Inputs		Inputs		Inputs
			(Millions)
	March 31, 2015 assets (liabilities):
	Cash equivalents	$	1,321	$	1,321	$	716	$	605	$	-
	Oil, gas and NGL commodity derivatives	$	1,670	$	1,670	$	-	$	1,670	$	-
	Oil, gas and NGL commodity derivatives	$	-52	$	-52	$	-	$	-52	$	-
	Midstream commodity derivatives	$	22	$	22	$	-	$	22	$	-
	Midstream commodity derivatives	$	-5	$	-5	$	-	$	-5	$	-
	Interest rate derivatives	$	3	$	3	$	-	$	3	$	-
	Interest rate derivatives	$	-1	$	-1	$	-	$	-1	$	-
	Foreign currency derivatives	$	22	$	22	$	-	$	22	$	-
	Debt	$	-11,749	$	-13,217	$	-	$	-13,217	$	-
	Capital lease obligations	$	-19	$	-19	$	-	$	-19	$	-
	December 31, 2014 assets (liabilities):
	Cash equivalents	$	950	$	950	$	340	$	610	$	-
	Oil, gas and NGL commodity derivatives	$	1,968	$	1,968	$	-	$	1,968	$	-
	Oil, gas and NGL commodity derivatives	$	-51	$	-51	$	-	$	-51	$	-
	Midstream commodity derivatives	$	27	$	27	$	-	$	27	$	-
	Midstream commodity derivatives	$	-5	$	-5	$	-	$	-5	$	-
	Interest rate derivatives	$	1	$	1	$	-	$	1	$	-
	Interest rate derivatives	$	-1	$	-1	$	-	$	-1	$	-
	Foreign currency derivatives	$	8	$	8	$	-	$	8	$	-
	Debt	$	-11,262	$	-12,472	$	-	$	-12,472	$	-
	Capital lease obligations	$	-20	$	-20	$	-	$	-20	$	-

Segment_Information_Tables

Segment Information (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Information [Abstract]
Condensed Statements Of Comprehensive Earnings And Balance Sheets Of Reportable Segments
		U.S.		Canada		EnLink		Eliminations		Total
		(Millions)
	Three Months Ended March 31, 2015:
	Revenues from external customers	$	2,264	$	221	$	780	$	-	$	3,265
	Intersegment revenues	$	-	$	-	$	156	$	-156	$	-
	Depreciation, depletion and amortization	$	713	$	127	$	90	$	-	$	930
	Interest expense	$	87	$	25	$	19	$	-12	$	119
	Asset impairments	$	5,460	$	-	$	-	$	-	$	5,460
	Earnings (loss) before income taxes	$	-5,487	$	-172	$	35	$	-	$	-5,624
	Income tax expense (benefit)	$	-1,993	$	-53	$	11	$	-	$	-2,035
	Net earnings (loss)	$	-3,494	$	-119	$	24	$	-	$	-3,589
	Net earnings attributable to noncontrolling interests	$	-	$	-	$	10	$	-	$	10
	Net earnings (loss) attributable to Devon	$	-3,494	$	-119	$	14	$	-	$	-3,599
	Property and equipment, net	$	19,851	$	6,281	$	5,323	$	-	$	31,455
	Total assets	$	26,926	$	7,625	$	10,893	$	-102	$	45,342
	Capital expenditures	$	1,369	$	224	$	489	$	-	$	2,082
	Three Months Ended March 31, 2014:
	Revenues from external customers	$	2,616	$	684	$	425	$	-	$	3,725
	Intersegment revenues	$	-	$	-	$	298	$	-298	$	-
	Depreciation, depletion and amortization	$	497	$	194	$	48	$	-	$	739
	Interest expense	$	100	$	19	$	5	$	-9	$	115
	Earnings before income taxes	$	396	$	92	$	72	$	-	$	560
	Income tax expense	$	186	$	21	$	24	$	-	$	231
	Net earnings	$	210	$	71	$	48	$	-	$	329
	Net earnings attributable to noncontrolling interests	$	-	$	-	$	5	$	-	$	5
	Net earnings attributable to Devon	$	210	$	71	$	43	$	-	$	324
	Property and equipment, net	$	24,857	$	8,369	$	4,203	$	-	$	37,429
	Total assets	$	30,085	$	13,384	$	9,354	$	-58	$	52,765
	Capital expenditures	$	7,089	$	442	$	82	$	-	$	7,613
	Year Ended December 31, 2014:
	Property and equipment, net	$	24,572	$	6,790	$	4,934	$	-	$	36,296
	Total assets	$	32,147	$	8,517	$	10,097	$	-124	$	50,637

Acquisitions_And_Divestitures_1

Acquisitions And Divestitures (Narrative) (Details) (USD $)	3 Months Ended	0 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Apr. 01, 2015
General Partner And EnLink [Member]
Business Acquisition [Line Items]
Close date of acquisition	7-Mar-14
GeoSouthern Intermediate Holdings, LLC [Member]
Business Acquisition [Line Items]
Close date of acquisition	28-Feb-14
EnLink [Member] | Victoria Express Pipeline [Member] | Subsequent Event [Member]
Business Acquisition [Line Items]
Aggregate purchase price		$180
EnLink [Member] | Victoria Express Pipeline [Member] | Subsequent Event [Member] | Forecast [Member]
Business Acquisition [Line Items]
Estimated construction costs assumed		$35

Acquisitions_And_Divestitures_2

Acquisitions And Divestitures (Schedule Of Unaudited Proforma Information For General Partner and EnLink And GeoSouthern) (Details) (General Partner and EnLink And GeoSouthern [Member], USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2014
General Partner and EnLink And GeoSouthern [Member]
Business Acquisition [Line Items]
Total operating revenues	$4,372
Net earnings (loss)	347
Noncontrolling interests	18
Net earnings (loss) attributable to Devon	$329
Net earnings (loss) per common share attributable to Devon	$0.81

Acquisitions_And_Divestitures_3

Acquisitions And Divestitures (Purchase Price Allocation Of EnLink's Acquisitions And Dropdown Activity ) (Details) (USD $)	0 Months Ended			1 Months Ended
In Millions, unless otherwise specified	Jan. 31, 2015	Feb. 17, 2015	Mar. 16, 2015	Mar. 31, 2015	Feb. 28, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill				$6,328		$6,303
EnLink [Member] | LPC Crude Oil Marketing LLC [Member]
Business Acquisition [Line Items]
Cash	100
PP&E	29
Goodwill	25
Intangibles	49
Deferred income taxes	-3
EnLink [Member] | General Partner [Member]
Business Acquisition [Line Items]
EnLink units		925
EnLink [Member] | Coronado Midstream Holdings LLC [Member]
Business Acquisition [Line Items]
Cash			242
EnLink units			360	360
PP&E			306
Intangibles			294
Other current assets			2
EnLink [Member] | EnLink Midstream Holdings [Member]
Business Acquisition [Line Items]
EnLink units					$925
EMH Ownership Interest		25.00%			25.00%

Derivative_Financial_Instrumen2

Derivative Financial Instruments (Narrative) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Derivative Financial Instruments [Abstract]
Derivative collateral	$487	$524

Derivative_Financial_Instrumen3

Derivative Financial Instruments (Schedule Of Open Oil Derivative Positions) (Details)	3 Months Ended
	Mar. 31, 2015
	bbl
NYMEX West Texas Intermediate Price Swaps Oil Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	106,442
Weighted Average Price Swap	91.07
NYMEX West Texas Intermediate Price Collars Oil Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	31,500
Weighted Average Floor Price	89.67
Weighted Average Ceiling Price	97.84
NYMEX West Texas Intermediate Call Options Sold Oil Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	28,000
Weighted Average Call Option Sold Price	116.43
NYMEX West Texas Intermediate Price Swaps Oil Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)
Weighted Average Price Swap
NYMEX West Texas Intermediate Price Collars Oil Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)
Weighted Average Floor Price
Weighted Average Ceiling Price
NYMEX West Texas Intermediate Call Options Sold Oil Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	18,500
Weighted Average Call Option Sold Price	103.11
Western Canadian Select Basis Swaps Oil Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	36,320
Weighted Average Differential To WTI	-16.35
West Texas Sour Basis Swaps Oil Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	8,000
Weighted Average Differential To WTI	-3.68
Midland Sweet Basis Swaps Oil Q2- Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	16,331
Weighted Average Differential To WTI	-2.84
West Texas Sour Basis Swaps Oil Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (Bbls/d)	1,000
Weighted Average Differential To WTI	-1.5

Derivative_Financial_Instrumen4

Derivative Financial Instruments (Schedule Of Open Natural Gas Derivative Positions) (Details)	3 Months Ended
	Mar. 31, 2015
	MMBTU
FERC Henry Hub Price Swaps Natural Gas Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	250,000
Weighted Average Price Swap	4.32
FERC Henry Hub Price Collars Natural Gas Quarter Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	391,964
Weighted Average Floor Price	3.74
Weighted Average Ceiling Price	4.04
FERC Henry Hub Call Options Sold Natural Gas Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	550,000
Weighted Average Call Option Sold Price	5.09
FERC Henry Hub Price Swaps Natural Gas Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)
Weighted Average Price Swap
FERC Henry Hub Price Collars Natural Gas Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)
Weighted Average Floor Price
Weighted Average Ceiling Price
FERC Henry Hub Call Options Sold Natural Gas Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	400,000
Weighted Average Call Option Sold Price	5
PEPL Basis Swaps Natural Gas Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	100,000
Weighted Average Differential To Henry Hub	-0.28
El Paso Natural Gas Basis Swaps Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	70,000
Weighted Average Differential To Henry Hub	-0.11
Houston Ship Channel Natural Gas Basis Swaps Q2-Q4 2015 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	200,000
Weighted Average Differential To Henry Hub	0.01
PEPL Basis Swaps Natural Gas Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	40,000
Weighted Average Differential To Henry Hub	-0.33
El Paso Natural Gas Basis Swaps Q1-Q4 2016 [Member
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	15,000
Weighted Average Differential To Henry Hub	-0.13
Houston Ship Channel Natural Gas Basis Swaps Q1-Q4 2016 [Member]
Derivatives, Fair Value [Line Items]
Volume Per Day (MMBtu/d)	30,000
Weighted Average Differential To Henry Hub	0.11

Derivative_Financial_Instrumen5

Derivative Financial Instruments (Schedule Of Gas Processing and Fractionation Open Positions) (Details) (EnLink [Member])	3 Months Ended
	Mar. 31, 2015
	MBbls
OPIS Mont Belvieu Texas Ethane Basis Swap Q2 2015-Q4 2016 [Member]
Derivative [Line Items]
Total Volume (MBbls)	1,113
Weighted average price paid	$0.28/gal
Weighted average price received	Index
OPIS Mont Belvieu Texas Propane Basis Swap Q2 2015-Q4 2016 [Member]
Derivative [Line Items]
Total Volume (MBbls)	1,170
Weighted average price paid	Index
Weighted average price received	$0.95/gal
OPIS Mont Belvieu Texas Normal Butane Basis Swap Q2 2015-Q1 2016 [Member]
Derivative [Line Items]
Total Volume (MBbls)	117
Weighted average price paid	Index
Weighted average price received	$0.78/gal
OPIS Mont Belvieu Texas Natural Gasoline Basis Swap Q2 2015-Q1 2016 [Member]
Derivative [Line Items]
Total Volume (MBbls)	101
Weighted average price paid	Index
Weighted average price received	$1.32/gal

Derivative_Financial_Instrumen6

Derivative Financial Instruments (Schedule Of Open Interest Rate Swap Derivative Positions) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Interest Rate Contract Expiration December 2016 [Member]
Derivative [Line Items]
Notional	$100
Rate Received	Three Month LIBOR
Rate Paid	0.92%
Expiration	1-Dec-16
Interest Rate Contract Expiration January 2019 [Member]
Derivative [Line Items]
Notional	$100
Rate Received	1.76%
Rate Paid	Three Month LIBOR
Expiration	1-Jan-19

Derivative_Financial_Instrumen7

Derivative Financial Instruments (Schedule Of Open Foreign Exchange Rate Derivative Positions) (Details) (Forward Contract Expiration June 2015 [Member], CAD)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Forward Contract Expiration June 2015 [Member]
Derivative [Line Items]
Currency	Canadian Dollar
Contract Type	Sell
CAD Notional	1,884
Weighted Average Fixed Rate Received	0.799
Expiration	1-Jun-15

Derivative_Financial_Instrumen8

Derivative Financial Instruments (Schedule Of Derivative Financial Instruments Included In The Consolidated Comprehensive Statements Of Earnings) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Derivatives, Fair Value [Line Items]
Net gain (losses) recognized in comprehensive statements of earnings	$430	($307)
Oil, Gas And NGL Commodity Derivatives [Member]
Derivatives, Fair Value [Line Items]
Net gain (losses) recognized in comprehensive statements of earnings	294	-320
Midstream Commodity Derivatives [Member]
Derivatives, Fair Value [Line Items]
Net gain (losses) recognized in comprehensive statements of earnings	2	-1
Interest Rate Derivatives [Member]
Derivatives, Fair Value [Line Items]
Net gain (losses) recognized in comprehensive statements of earnings	1
Foreign Currency Derivatives [Member]
Derivatives, Fair Value [Line Items]
Net gain (losses) recognized in comprehensive statements of earnings	$133	$14

Derivative_Financial_Instrumen9

Derivative Financial Instruments (Schedule Of Derivative Financial Instruments Included In The Consolidated Balance Sheets) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$1,717	$2,004
Fair value of derivative liabilities	58	57
Oil, Gas And NGL Commodity Derivatives [Member] | Derivatives, At Fair Value [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	1,668	1,967
Oil, Gas And NGL Commodity Derivatives [Member] | Other Long-Term Assets [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	2	1
Oil, Gas And NGL Commodity Derivatives [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	45	25
Oil, Gas And NGL Commodity Derivatives [Member] | Other Long-Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	7	26
Midstream Commodity Derivatives [Member] | Derivatives, At Fair Value [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	14	17
Midstream Commodity Derivatives [Member] | Other Long-Term Assets [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	8	10
Midstream Commodity Derivatives [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	3	3
Midstream Commodity Derivatives [Member] | Other Long-Term Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	2	2
Interest Rate Derivatives [Member] | Derivatives, At Fair Value [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	2	1
Interest Rate Derivatives [Member] | Other Long-Term Assets [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	1
Interest Rate Derivatives [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative liabilities	1	1
Foreign Currency Derivatives [Member] | Derivatives, At Fair Value [Member]
Derivatives, Fair Value [Line Items]
Fair value of derivative assets	$22	$8

ShareBased_Compensation_Narrat

Share-Based Compensation (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unit-based compensation	$68	$57
Restricted Stock Awards And Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested awards and units	302
Weighted average period for recognition of cost of unvested awards and units	3 years
Performance-Based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested awards and units	10
Weighted average period for recognition of cost of unvested awards and units	3 years 4 months 24 days
Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested awards and units	74
Weighted average period for recognition of cost of unvested awards and units	2 years 4 months 24 days
EnLink [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unit-based compensation	12	1
EnLink [Member] | Restricted Stock Awards And Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested awards and units	27
Weighted average period for recognition of cost of unvested awards and units	2 years 2 months 12 days
EnLink [Member] | Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested awards and units	4
Weighted average period for recognition of cost of unvested awards and units	2 years 1 month 6 days
General Partner [Member] | Restricted Stock Awards And Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested awards and units	27
Weighted average period for recognition of cost of unvested awards and units	2 years 1 month 6 days
General Partner [Member] | Performance Share Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation cost related to unvested awards and units	4
Weighted average period for recognition of cost of unvested awards and units	2 years 1 month 6 days
General Partner And EnLink [Member] | Restricted Stock Awards And Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unit-based compensation	$7

ShareBased_Compensation_Schedu

Share-Based Compensation (Schedule Of The Effects Of Share Based Compensation Included In The Consolidated Comprehensive Statement Of Earnings) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Share-based Compensation [Abstract]
Gross general and administrative expense	$68	$57
Share-based compensation expense capitalized pursuant to the full-cost method of accounting for oil and gas properties	15	13
Related income tax benefit	$14	$14

ShareBased_Compensation_Summar

Share-Based Compensation (Summary Of Unvested Restricted Stock Awards And Units, Including Changes During The Year) (Details) (Restricted Stock Awards And Units [Member], USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015
Restricted Stock Awards And Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at December 31, 2014	4,304
Granted, awards and units	2,613
Vested, awards and units	-674
Forfeited, awards and units	-101
Unvested at March 31, 2015	6,142
Unvested weighted average grant-date fair value at December 31, 2014	$60.85
Granted, weighted average grant-date fair value	$63.97
Vested, weighted average grant-date fair value	$60.78
Forfeited, weighted average grant-date fair value	$60.85
Unvested weighted average grant-date fair value at March 31, 2015	$62.18

ShareBased_Compensation_Summar1

Share-Based Compensation (Summary Of Unvested Performance-Based Restricted Stock Awards, Including Changes During The Year) (Details) (Performance-Based Restricted Stock Awards [Member], USD $)	3 Months Ended
In Thousands, except Per Share data, unless otherwise specified	Mar. 31, 2015
Performance-Based Restricted Stock Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at December 31, 2014	380
Granted, awards	205
Vested, awards	-59
Unvested at March 31, 2015	526
Unvested weighted average grant-date fair value at December 31, 2014	$59.41
Granted, weighted average grant-date fair value	$64.18
Vested, weighted average grant-date fair value	$61.33
Unvested weighted average grant-date fair value at March 31, 2015	$61.06

ShareBased_Compensation_Summar2

Share-Based Compensation (Summary Of Performance Share Units Grant-Date Fair Values And Their Related Assumptions) (Details) (Performance Share Units [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, weighted average grant-date fair value	$84.14
Risk-free interest rate	1.06%
Volatility factor	26.20%
Contractual term (in years)	2 years 10 months 21 days
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, weighted average grant-date fair value	$81.99
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, weighted average grant-date fair value	$85.05

ShareBased_Compensation_Summar3

Share-Based Compensation (Summary of Unvested Performance Share Units, Including Changes During the Year (Details) (Performance Share Units [Member], USD $)	3 Months Ended
	Mar. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unvested at December 31, 2014	1,477,000
Granted, units	786,000
Vested, units	-337,000
Forfeited, units	-14,000
Unvested at March 31, 2015	1,912,000	[1]
Unvested weighted average grant-date fair value at December 31, 2014	$70.90
Granted, weighted average grant-date fair value	$84.14
Vested, weighted average grant-date fair value	$66
Forfeited, weighted average grant-date fair value	$74.76
Unvested weighted average grant-date fair value at March 31, 2015	$76.27	[1]
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted, weighted average grant-date fair value	$85.05
Maximum [Member] | Forecast [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum common shares awarded based upon total shareholder return	3,800,000
[1]	A maximum of 3.8 million common shares could be awarded based upon Devon’s final total shareholder return ranking.

Asset_Impairments_Summary_of_A

Asset Impairments (Summary of Asset Impairments) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Impaired Long-Lived Assets Held and Used [Line Items]
Asset impairment charges, gross	$5,460
Asset impairment charges, after taxes	3,467
U.S. Oil And Gas Assets [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Asset impairment charges, gross	5,458
Asset impairment charges, after taxes	3,466
Other Assets [Member]
Impaired Long-Lived Assets Held and Used [Line Items]
Asset impairment charges, gross	2
Asset impairment charges, after taxes	$1

Income_Taxes_Narrative_Details

Income Taxes (Narrative) (Details) (USD $)	Mar. 31, 2014
In Millions, unless otherwise specified
Income Taxes [Abstract]
Deferred tax liability on formation of the General Partner	$48

Income_Taxes_Schedule_Of_Effec

Income Taxes (Schedule Of Effective Income Tax Reconciliation) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Taxes [Abstract]
Total income tax expense (benefit)	($2,035)	$231
U.S. statutory income tax rate	-35.00%	35.00%
Taxation on Canadian operations	0.00%	-3.00%
State income taxes	-1.00%	1.00%
Taxes on General Partner formation	0.00%	9.00%
Other	0.00%	-1.00%
Effective income tax rate	-36.00%	41.00%

Net_Earnings_Loss_Per_Share_At2

Net Earnings (Loss) Per Share Attributable To Devon (Earnings Per Share Computations) (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Net earnings (loss) per share attributable to Devon:
Net earnings (loss) attributable to Devon	($3,599)	$324
Net earnings (loss) attributable to Devon, Common Shares	410	407
Attributable to participating securities, Earnings (loss)	-1	-2
Attributable to participating securities, Common Shares	-4	-4
Basic net earnings (loss) per share, Earnings (loss)	-3,600	322
Basic net earnings (loss) per share, Common Shares	406	403
Basic net earnings (loss) per share	($8.88)	$0.80
Dilutive effect of potential common shares issuable, Common Shares		2
Diluted net earnings (loss) per share, Earnings (loss)	($3,600)	$322
Diluted net earnings (loss) per share, Common Shares	406	405
Diluted net earnings (loss) per share	($8.88)	$0.79
Antidilutive securities excluded from the computation of net earnings (loss) per share, amount	4.1	6.3

Other_Comprehensive_Earnings_C

Other Comprehensive Earnings (Components Of Other Comprehensive Earnings) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015		Mar. 31, 2014		Dec. 31, 2014
Foreign currency translation:
Beginning accumulated foreign currency translation	$983		$1,448
Change in cumulative translation adjustment	-337		-313
Income tax benefit (expense)	35		15
Ending accumulated foreign currency translation	681		1,150
Pension and postretirement benefit plans:
Beginning accumulated pension and postretirement benefits	-204		-180
Recognition of net actuarial loss and prior service cost in earnings	6	[1]	5	[1]
Income tax benefit (expense)	-2		-2
Ending accumulated pension and postretirement benefits	-200		-177
Accumulated other comprehensive earnings, net of tax	$481		$973		$779
[1]	These accumulated other comprehensive earnings components are included in the computation of net periodic benefit cost, which is a component of general and administrative expenses on the accompanying consolidated comprehensive statements of earnings. See Note 14 for additional details.

Supplemental_Information_To_Ca

Supplemental Information To Cash Flows (Schedule Of Supplemental To Cash Flow Information) (Details) (USD $)	3 Months Ended		0 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Mar. 07, 2014
Net change in working capital accounts:
Accounts receivable	$404	($455)
Income taxes receivable	425	31
Other current assets	-93	-58
Accounts payable	-15	20
Revenues and royalties payable	-236	391
Other current liabilities	-270	-81
Net change in working capital	215	-152
Interest paid (net of capitalized interest)	118	137
Income taxes paid (received)	-414	38
General Partner And EnLink [Member]
Net change in working capital accounts:
Cash payment to acquire interest			$100

Accounts_Receivable_Schedule_O

Accounts Receivable (Schedule Of Components Of Accounts Receivable) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Accounts, Notes, Loans and Financing Receivable [Line Items]
Joint interest billings	$451	$475
Other	50	71
Gross accounts receivable	1,677	1,975
Allowance for doubtful accounts	-14	-16
Net accounts receivable	1,663	1,959
Oil, Gas And NGL Sales [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross accounts receivable	556	723
Marketing And Midstream Revenues [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Gross accounts receivable	$620	$706

Goodwill_And_Other_Intangible_2

Goodwill And Other Intangible Assets (Narrative) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Goodwill And Other Intangible Assets [Abstract]
Weighted average amortization period	11 years 1 month 6 days
Amortization of Intangible Assets	$11.50	$1.90

Goodwill_And_Other_Intangible_3

Goodwill And Other Intangible Assets (Schedule Of Other Intangible Assets) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Goodwill And Other Intangible Assets [Abstract]
Customer relationships	$926	$569
Accumulated amortization	-48	-36
Net intangibles	$878	$533

Goodwill_And_Other_Intangible_4

Goodwill And Other Intangible Assets (Schedule Of Estimated Future Amortization Expense) (Details) (USD $)	Mar. 31, 2015
In Millions, unless otherwise specified
Goodwill And Other Intangible Assets [Abstract]
2015	$52
2016	67
2017	67
2018	67
2019	$66

Debt_Narrative_Details

Debt (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015	Dec. 31, 2014	Feb. 05, 2015	Feb. 04, 2015
Debt Instrument [Line Items]
Commercial Paper	$948,000,000	$932,000,000
Senior Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility, borrowing capacity	3,000,000,000
Outstanding Credit Facility borrowings	0
Debt-to-capitalization ratio	0.216
EnLink [Member]
Debt Instrument [Line Items]
Outstanding Credit Facility borrowings	709,000,000	237,000,000
EnLink [Member] | Unsecured Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility, borrowing capacity			1,500,000,000	1,000,000,000
Outstanding Credit Facility borrowings	709,000,000
Line of credit facility expiration date	6-Mar-20
Line of credit average interest rate during period	1.65%
Credit Facility, remaining borrowing capacity	788,000,000
EnLink [Member] | Unsecured Letter Of Credit Subfacility [Member]
Debt Instrument [Line Items]
Outstanding Credit Facility borrowings	2,900,000
General Partner [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Credit Facility, borrowing capacity	250,000,000
Outstanding Credit Facility borrowings	$0
Maximum [Member] | Senior Credit Facility [Member]
Debt Instrument [Line Items]
Debt-to-capitalization ratio	0.65
Commercial Paper [Member]
Debt Instrument [Line Items]
Average borrowing rate on commercial paper borrowings	0.60%

Debt_Schedule_Of_Debt_Instrume

Debt (Schedule Of Debt Instruments) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015		Dec. 31, 2014
Debt Instrument [Line Items]
Commercial Paper	$948,000,000		$932,000,000
Net (discount) premium on debentures and notes	-18,000,000		-18,000,000
Total debt	11,749,000,000		11,262,000,000
Less amount classified as short-term debt	1,448,000,000	[1]	1,432,000,000	[1]
Long-term debt	10,301,000,000		9,830,000,000
Floating Rate due December 15, 2015 [Member]
Debt Instrument [Line Items]
Debt, maturity date	15-Dec-15
Short-term debt	500,000,000		500,000,000
Floating Rate Due December 15, 2016 [Member]
Debt Instrument [Line Items]
Debt, maturity date	15-Dec-16
Long-term debt, gross	350,000,000		350,000,000
8.25% Due July 1, 2018 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	8.25%		8.25%
Debt, maturity date	1-Jul-18
Long-term debt, gross	125,000,000		125,000,000
2.25% Due December 15, 2018 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	2.25%		2.25%
Debt, maturity date	15-Dec-18
Long-term debt, gross	750,000,000		750,000,000
6.30% Due January 15, 2019 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	6.30%		6.30%
Debt, maturity date	15-Jan-19
Long-term debt, gross	700,000,000		700,000,000
4.00% Due July 15, 2021 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	4.00%		4.00%
Debt, maturity date	15-Jul-21
Long-term debt, gross	500,000,000		500,000,000
3.25% due May 15, 2022 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	3.25%		3.25%
Debt, maturity date	15-May-22
Long-term debt, gross	1,000,000,000		1,000,000,000
7.50% due September 15, 2027 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	7.50%		7.50%
Debt, maturity date	15-Sep-27
Long-term debt, gross	150,000,000		150,000,000
7.875% due September 30, 2031 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	7.88%		7.88%
Debt, maturity date	30-Sep-31
Long-term debt, gross	1,250,000,000		1,250,000,000
7.95% due April 15, 2032 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	7.95%		7.95%
Debt, maturity date	15-Apr-32
Long-term debt, gross	1,000,000,000		1,000,000,000
5.60% due July 15, 2041 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	5.60%		5.60%
Debt, maturity date	15-Jul-41
Long-term debt, gross	1,250,000,000		1,250,000,000
4.75% due May 15, 2042 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	4.75%		4.75%
Debt, maturity date	15-May-42
Long-term debt, gross	750,000,000		750,000,000
Devon [Member]
Debt Instrument [Line Items]
Total debt	9,255,000,000		9,239,000,000
EnLink [Member]
Debt Instrument [Line Items]
Credit facilities	709,000,000		237,000,000
Net (discount) premium on debentures and notes	22,000,000		23,000,000
Total debt	2,494,000,000		2,023,000,000
EnLink [Member] | 2.70% due April 1, 2019 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	2.70%		2.70%
Debt, maturity date	1-Apr-19
Long-term debt, gross	400,000,000		400,000,000
EnLink [Member] | 7.125% due June 1, 2022 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	7.13%		7.13%
Debt, maturity date	1-Jun-22
Long-term debt, gross	163,000,000		163,000,000
EnLink [Member] | 4.40% due April 1, 2024 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	4.40%		4.40%
Debt, maturity date	1-Apr-24
Long-term debt, gross	550,000,000		550,000,000
EnLink [Member] | 5.60% due April 1, 2044 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	5.60%		5.60%
Debt, maturity date	1-Apr-44
Long-term debt, gross	350,000,000		350,000,000
EnLink [Member] | 5.05% due April 1, 2045 [Member]
Debt Instrument [Line Items]
Debt interest rate, stated percentage	5.05%		5.05%
Debt, maturity date	1-Apr-45
Long-term debt, gross	$300,000,000		$300,000,000
[1]	Short-term debt as of March 31, 2015 consists of $948 million of commercial paper and $500 million floating rate due on December 15, 2015. Short-term debt as of December 31, 2014 consists of $932 million of commercial paper and $500 million floating rate due on December 15, 2015.

Asset_Retirement_Obligations_S

Asset Retirement Obligations (Summary Of Changes In Asset Retirement Obligations) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Asset Retirement Obligations [Abstract]
Asset retirement obligations as of beginning of period	$1,399	$2,228
Liabilities incurred	23	45
Liabilities settled	-13	-14
Revision of estimated obligation	62	69
Liabilities assumed by others	-12	-9
Accretion expense on discounted obligation	19	29
Foreign currency translation adjustment	-53	-51
Asset retirement obligations as of end of period	1,425	2,297
Less current portion	52	79
Asset retirement obligations, long-term	$1,373	$2,218	$1,339

Retirement_Plans_Schedule_Of_N

Retirement Plans (Schedule Of Net Periodic Benefit Cost For Pension And Postretirement Benefit Plans) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$8,000,000		$7,000,000
Interest cost	13,000,000		14,000,000
Expected return on plan assets	-15,000,000		-13,000,000
Amortization of prior service cost	1,000,000	[1]	1,000,000	[1]
Net actuarial loss	5,000,000	[1]	4,000,000	[1]
Total net periodic benefit cost	12,000,000	[2]	13,000,000	[2]
Postretirement Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Total net periodic benefit cost	$0	[2]	$0	[2]
[1]	These net periodic benefit costs were reclassified out of other comprehensive earnings in the current period.
[2]	Net periodic benefit cost is a component of general and administrative expenses on the accompanying consolidated comprehensive statements of earnings.

Stockholders_Equity_Narrative_

Stockholders' Equity (Narrative) (Details) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Jun. 30, 2014	Mar. 31, 2014
Stockholders' Equity [Abstract]
Payments of ordinary dividends	$99		$90
Dividends paid per share		$0.24	$0.22

Noncontrolling_Interests_Narra

Noncontrolling Interests (Narrative) (Details) (USD $)	1 Months Ended	3 Months Ended		1 Months Ended	0 Months Ended		1 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2015	Mar. 31, 2014	Feb. 28, 2015	Mar. 07, 2014	Mar. 16, 2015	Apr. 30, 2015	Feb. 17, 2015
Noncontrolling Interest [Line Items]
Number of units sold to public for interests in EnLink	22.8
Sale of investment in EnLink	$569	$569
EnLink [Member]
Noncontrolling Interest [Line Items]
Percentage of ownership before stock transaction		49.00%
Percentage of ownership after stock transaction		34.00%
EnLink Midstream Holdings [Member] | EnLink [Member]
Noncontrolling Interest [Line Items]
Ownership interest percentage acquired				25.00%				25.00%
Common units value				925
General Partner And EnLink [Member]
Noncontrolling Interest [Line Items]
Cash payment to acquire interest					100
Coronado Midstream Holdings LLC [Member] | EnLink [Member]
Noncontrolling Interest [Line Items]
Cash payment to acquire interest						242
Common units value	360					360
Aggregate purchase price	602
Common units sold, shares	13.4
Subsequent Event [Member]
Noncontrolling Interest [Line Items]
Number of units sold to public for interests in EnLink							3.4
Sale of investment in EnLink							$85

Fair_Value_Measurements_Schedu

Fair Value Measurements (Schedule Of Carrying Value And Fair Value Measurement Information For Financial Assets And Liabilities) (Details) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	$1,717	$2,004
Derivatives, liabilities	-58	-57
Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	1,321	950
Debt	-11,749	-11,262
Capital lease obligations	-19	-20
Total Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	1,321	950
Debt	-13,217	-12,472
Capital lease obligations	-19	-20
Level 1 Inputs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	716	340
Level 2 Inputs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash equivalents	605	610
Debt	-13,217	-12,472
Capital lease obligations	-19	-20
Oil, Gas And NGL Commodity Derivatives [Member] | Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	1,670	1,968
Derivatives, liabilities	-52	-51
Oil, Gas And NGL Commodity Derivatives [Member] | Total Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	1,670	1,968
Derivatives, liabilities	-52	-51
Oil, Gas And NGL Commodity Derivatives [Member] | Level 2 Inputs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	1,670	1,968
Derivatives, liabilities	-52	-51
Midstream Commodity Derivatives [Member] | Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	22	27
Derivatives, liabilities	-5	-5
Midstream Commodity Derivatives [Member] | Total Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	22	27
Derivatives, liabilities	-5	-5
Midstream Commodity Derivatives [Member] | Level 2 Inputs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	22	27
Derivatives, liabilities	-5	-5
Interest Rate Derivatives [Member] | Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	3	1
Derivatives, liabilities	-1	-1
Interest Rate Derivatives [Member] | Total Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	3	1
Derivatives, liabilities	-1	-1
Interest Rate Derivatives [Member] | Level 2 Inputs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	3	1
Derivatives, liabilities	-1	-1
Foreign Currency Derivatives [Member] | Carrying Amount [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	22	8
Foreign Currency Derivatives [Member] | Total Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	22	8
Foreign Currency Derivatives [Member] | Level 2 Inputs [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivatives, assets	$22	$8

Segment_information_Condensed_

Segment information (Condensed Statements Of Comprehensive Earnings And Balance Sheets Of Reportable Segments) (Details) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Revenues from external customers	$3,265	$3,725
Depreciation, depletion and amortization	930	739
Interest expense	119	115
Asset impairments	5,460
Earnings (loss) before income taxes	-5,624	560
Income tax expense (benefit)	-2,035	231
Net earnings (loss)	-3,589	329
Net earnings attributable to noncontrolling interests	10	5
Net earnings (loss) attributable to Devon	-3,599	324
Property and equipment, net	31,455	37,429	36,296
Total assets	45,342	52,765	50,637
Capital expenditures	2,082	7,613
Eliminations [Member]
Segment Reporting Information [Line Items]
Interest expense	-12	-9
Total assets	-102	-58	-124
Eliminations [Member] | Intersegment [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	-156	-298
United States [Member]
Segment Reporting Information [Line Items]
Number of reportable segments	1
Revenues from external customers	2,264	2,616
Depreciation, depletion and amortization	713	497
Interest expense	87	100
Asset impairments	5,460
Earnings (loss) before income taxes	-5,487	396
Income tax expense (benefit)	-1,993	186
Net earnings (loss)	-3,494	210
Net earnings (loss) attributable to Devon	-3,494	210
Property and equipment, net	19,851	24,857	24,572
Total assets	26,926	30,085	32,147
Capital expenditures	1,369	7,089
Canada [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	221	684
Depreciation, depletion and amortization	127	194
Interest expense	25	19
Earnings (loss) before income taxes	-172	92
Income tax expense (benefit)	-53	21
Net earnings (loss)	-119	71
Net earnings (loss) attributable to Devon	-119	71
Property and equipment, net	6,281	8,369	6,790
Total assets	7,625	13,384	8,517
Capital expenditures	224	442
General Partner And EnLink [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	780	425
Depreciation, depletion and amortization	90	48
Interest expense	19	5
Earnings (loss) before income taxes	35	72
Income tax expense (benefit)	11	24
Net earnings (loss)	24	48
Net earnings attributable to noncontrolling interests	10	5
Net earnings (loss) attributable to Devon	14	43
Property and equipment, net	5,323	4,203	4,934
Total assets	10,893	9,354	10,097
Capital expenditures	489	82
General Partner And EnLink [Member] | Intersegment [Member]
Segment Reporting Information [Line Items]
Revenues from external customers	$156	$298