Supplemental Guarantor Information - Supplemental Condensed Consolidating Statement of Operations (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
REVENUES AND OTHER:
Oil and Gas Production Revenues	$ 1,386	$ 1,991	$ 2,473	$ 3,650
Equity in net income (loss) of affiliates	0	0	0	0
Other	(21)	28	(24)	22
Gain (loss) on divestitures, net	17	227	16	209
Total revenues and other	1,382	2,246	2,465	3,881
OPERATING EXPENSES:
Lease operating expenses	359	467	737	948
Gathering and transportation	52	49	104	105
Taxes other than income	65	55	76	128
Exploration	91	225	186	483
General and administrative	103	111	196	195
Depreciation, depletion, and amortization	669	794	1,347	1,620
Asset retirement obligation accretion	38	36	76	72
Impairments	173	512	173	2,424
Transaction, reorganization, and separation	9	66	24	120
Financing costs, net	104	117	209	241
Total operating expenses	1,663	2,432	3,128	6,336
LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(281)	(186)	(663)	(2,455)
Provision (benefit) for income taxes	(81)	731	(92)	(470)
NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(200)	(917)	(571)	(1,985)
Net income (loss) from discontinued operations, net of tax	0	120	0	(118)
NET LOSS INCLUDING NONCONTROLLING INTEREST	(200)	(797)	(571)	(2,103)
Net income attributable to noncontrolling interest	44	63	45	91
NET LOSS ATTRIBUTABLE TO COMMON STOCK	(244)	(860)	(616)	(2,194)
Reclassifications & Eliminations [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	0	0	0	0
Equity in net income (loss) of affiliates	70	138	204	1,437
Other	0	19	0	19
Gain (loss) on divestitures, net	0	0	0	0
Total revenues and other	70	157	204	1,456
OPERATING EXPENSES:
Lease operating expenses	0	0	0	0
Gathering and transportation	0	0	0	0
Taxes other than income	0	0	0	0
Exploration	0	0	0	0
General and administrative	0	19	0	19
Depreciation, depletion, and amortization	0	0	0	0
Asset retirement obligation accretion	0	0	0	0
Impairments	0	0	0	0
Transaction, reorganization, and separation	0	0	0	0
Financing costs, net	0	0	0	0
Total operating expenses	0	19	0	19
LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	70	138	204	1,437
Provision (benefit) for income taxes	0	0	0	0
NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	70	138	204	1,437
Net income (loss) from discontinued operations, net of tax	0	0	0	0
NET LOSS INCLUDING NONCONTROLLING INTEREST	70	138	204	1,437
Net income attributable to noncontrolling interest	0	0	0	0
NET LOSS ATTRIBUTABLE TO COMMON STOCK	70	138	204	1,437
Apache Corporation [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	270	434	487	799
Equity in net income (loss) of affiliates	(76)	(172)	(184)	(1,419)
Other	(22)	(7)	6	(45)
Gain (loss) on divestitures, net	(1)	(16)	(2)	(29)
Total revenues and other	171	239	307	(694)
OPERATING EXPENSES:
Lease operating expenses	66	108	144	232
Gathering and transportation	10	7	19	16
Taxes other than income	22	33	43	67
Exploration	76	166	126	261
General and administrative	86	74	163	136
Depreciation, depletion, and amortization	159	232	315	494
Asset retirement obligation accretion	5	3	9	7
Impairments	61	201	61	1,365
Transaction, reorganization, and separation	9	66	24	120
Financing costs, net	64	116	125	215
Total operating expenses	558	1,006	1,029	2,913
LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(387)	(767)	(722)	(3,607)
Provision (benefit) for income taxes	(143)	(79)	(106)	(1,585)
NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(244)	(688)	(616)	(2,022)
Net income (loss) from discontinued operations, net of tax	0	(172)	0	(172)
NET LOSS INCLUDING NONCONTROLLING INTEREST	(244)	(860)	(616)	(2,194)
Net income attributable to noncontrolling interest	0	0	0	0
NET LOSS ATTRIBUTABLE TO COMMON STOCK	(244)	(860)	(616)	(2,194)
Apache Finance Canada [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	0	0	0	0
Equity in net income (loss) of affiliates	6	35	(20)	(18)
Other	9	12	21	26
Gain (loss) on divestitures, net	0	0	0	0
Total revenues and other	15	47	1	8
OPERATING EXPENSES:
Lease operating expenses	0	0	0	0
Gathering and transportation	0	0	0	0
Taxes other than income	0	0	0	0
Exploration	0	0	0	0
General and administrative	0	0	0	0
Depreciation, depletion, and amortization	0	0	0	0
Asset retirement obligation accretion	0	0	0	0
Impairments	0	0	0	0
Transaction, reorganization, and separation	0	0	0	0
Financing costs, net	7	11	17	21
Total operating expenses	7	11	17	21
LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	8	36	(16)	(13)
Provision (benefit) for income taxes	2	2	4	5
NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	6	34	(20)	(18)
Net income (loss) from discontinued operations, net of tax	0	0	0	0
NET LOSS INCLUDING NONCONTROLLING INTEREST	6	34	(20)	(18)
Net income attributable to noncontrolling interest	0	0	0	0
NET LOSS ATTRIBUTABLE TO COMMON STOCK	6	34	(20)	(18)
All Other Subsidiaries of Apache Corporation [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	1,116	1,557	1,986	2,851
Equity in net income (loss) of affiliates	0	(1)	0	0
Other	(8)	4	(51)	22
Gain (loss) on divestitures, net	18	243	18	238
Total revenues and other	1,126	1,803	1,953	3,111
OPERATING EXPENSES:
Lease operating expenses	293	359	593	716
Gathering and transportation	42	42	85	89
Taxes other than income	43	22	33	61
Exploration	15	59	60	222
General and administrative	17	18	33	40
Depreciation, depletion, and amortization	510	562	1,032	1,126
Asset retirement obligation accretion	33	33	67	65
Impairments	112	311	112	1,059
Transaction, reorganization, and separation	0	0	0	0
Financing costs, net	33	(10)	67	5
Total operating expenses	1,098	1,396	2,082	3,383
LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	28	407	(129)	(272)
Provision (benefit) for income taxes	60	808	10	1,110
NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(32)	(401)	(139)	(1,382)
Net income (loss) from discontinued operations, net of tax	0	292	0	54
NET LOSS INCLUDING NONCONTROLLING INTEREST	(32)	(109)	(139)	(1,328)
Net income attributable to noncontrolling interest	44	63	45	91
NET LOSS ATTRIBUTABLE TO COMMON STOCK	$ (76)	$ (172)	$ (184)	$ (1,419)