Consolidated Comprehensive Statements Of Earnings - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Oil, gas and NGL sales	$ 1,113	$ 1,338	$ 3,023	$ 4,264
Oil, gas and NGL derivatives	79	414	(30)	426
Marketing and midstream revenues	1,690	1,849	4,503	5,569
Gains on asset sales	1,351		1,351
Total revenues and other	4,233	3,601	8,847	10,259
Lease operating expenses	355	510	1,215	1,625
Marketing and midstream operating expenses	1,480	1,637	3,884	4,939
General and administrative expenses	141	198	482	661
Production and property taxes	67	91	220	315
Depreciation, depletion and amortization	394	744	1,420	2,488
Asset impairments	319	5,851	4,851	15,479
Restructuring and transaction costs	(5)		266
Other operating items	17	14	41	54
Total operating expenses	2,768	9,045	12,379	25,561
Operating income (loss)	1,465	(5,444)	(3,532)	(15,302)
Net financing costs	243	136	570	378
Other nonoperating items	44	43	150	46
Earnings (loss) before income taxes	1,178	(5,623)	(4,252)	(15,726)
Income tax expense (benefit)	171	(1,714)	(228)	(5,435)
Net earnings (loss)	1,007	(3,909)	(4,024)	(10,291)
Net earnings (loss) attributable to noncontrolling interests	14	(402)	(391)	(369)
Net earnings (loss) attributable to Devon	$ 993	$ (3,507)	$ (3,633)	$ (9,922)
Net earnings (loss) per share attributable to Devon:
Basic	$ 1.90	$ (8.64)	$ (7.22)	$ (24.45)
Diluted	$ 1.89	$ (8.64)	$ (7.22)	$ (24.45)
Comprehensive earnings (loss):
Net earnings (loss)	$ 1,007	$ (3,909)	$ (4,024)	$ (10,291)
Other comprehensive earnings (loss), net of tax:
Foreign currency translation	2	(212)	28	(470)
Pension and postretirement plans	11	5	20	12
Other comprehensive earnings (loss), net of tax	13	(207)	48	(458)
Comprehensive earnings (loss)	1,020	(4,116)	(3,976)	(10,749)
Comprehensive earnings (loss) attributable to noncontrolling interests	14	(402)	(391)	(369)
Comprehensive earnings (loss) attributable to Devon	$ 1,006	$ (3,714)	$ (3,585)	$ (10,380)