Supplemental Guarantor Information - Supplemental Condensed Consolidating Statement of Operations (Detail) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
REVENUES AND OTHER:
Oil and Gas Production Revenues	$ 1,512	$ 1,087
Equity in net income (loss) of affiliates	0	0
Other	25	(3)
Gain (loss) on divestitures	341	(1)
Total revenues and other	1,878	1,083
OPERATING EXPENSES:
Lease operating expenses	336	378
Gathering and transportation	57	52
Taxes other than income	42	11
Exploration	92	95
General and administrative	103	93
Transaction, reorganization, and separation	(10)	15
Depreciation, depletion, and amortization	576	678
Asset retirement obligation accretion	36	38
Impairments	8	0
Financing costs, net	100	105
Total operating expenses	1,340	1,465
NET INCOME (LOSS) BEFORE INCOME TAXES	538	(382)
Provision (benefit) for income taxes	271	(11)
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	267	(371)
Net income attributable to noncontrolling interest	54	1
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	213	(372)
Reclassifications & Eliminations [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	0	0
Equity in net income (loss) of affiliates	(221)	134
Other	0	0
Gain (loss) on divestitures	0	0
Total revenues and other	(221)	134
OPERATING EXPENSES:
Lease operating expenses	0	0
Gathering and transportation	0	0
Taxes other than income	0	0
Exploration	0	0
General and administrative	0	0
Transaction, reorganization, and separation	0	0
Depreciation, depletion, and amortization	0	0
Asset retirement obligation accretion	0	0
Impairments	0	0
Financing costs, net	0	0
Total operating expenses	0	0
NET INCOME (LOSS) BEFORE INCOME TAXES	(221)	134
Provision (benefit) for income taxes	0	0
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	(221)	134
Net income attributable to noncontrolling interest	0	0
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(221)	134
Apache Corporation [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	284	217
Equity in net income (loss) of affiliates	222	(108)
Other	8	28
Gain (loss) on divestitures	141	(1)
Total revenues and other	655	136
OPERATING EXPENSES:
Lease operating expenses	81	78
Gathering and transportation	7	8
Taxes other than income	23	21
Exploration	28	50
General and administrative	90	77
Transaction, reorganization, and separation	(10)	15
Depreciation, depletion, and amortization	135	156
Asset retirement obligation accretion	6	4
Impairments	0	0
Financing costs, net	60	61
Total operating expenses	420	470
NET INCOME (LOSS) BEFORE INCOME TAXES	235	(334)
Provision (benefit) for income taxes	22	37
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	213	(371)
Net income attributable to noncontrolling interest	0	0
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	213	(371)
Apache Finance Canada [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	0	0
Equity in net income (loss) of affiliates	(1)	(26)
Other	8	12
Gain (loss) on divestitures	0	0
Total revenues and other	7	(14)
OPERATING EXPENSES:
Lease operating expenses	0	0
Gathering and transportation	0	0
Taxes other than income	0	0
Exploration	0	0
General and administrative	0	0
Transaction, reorganization, and separation	0	0
Depreciation, depletion, and amortization	0	0
Asset retirement obligation accretion	0	0
Impairments	0	0
Financing costs, net	6	10
Total operating expenses	6	10
NET INCOME (LOSS) BEFORE INCOME TAXES	1	(24)
Provision (benefit) for income taxes	2	2
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	(1)	(26)
Net income attributable to noncontrolling interest	0	0
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(1)	(26)
All Other Subsidiaries of Apache Corporation [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	1,228	870
Equity in net income (loss) of affiliates	0	0
Other	9	(43)
Gain (loss) on divestitures	200	0
Total revenues and other	1,437	827
OPERATING EXPENSES:
Lease operating expenses	255	300
Gathering and transportation	50	44
Taxes other than income	19	(10)
Exploration	64	45
General and administrative	13	16
Transaction, reorganization, and separation	0	0
Depreciation, depletion, and amortization	441	522
Asset retirement obligation accretion	30	34
Impairments	8	0
Financing costs, net	34	34
Total operating expenses	914	985
NET INCOME (LOSS) BEFORE INCOME TAXES	523	(158)
Provision (benefit) for income taxes	247	(50)
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	276	(108)
Net income attributable to noncontrolling interest	54	1
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	$ 222	$ (109)