Supplemental Guarantor Information - Supplemental Condensed Consolidating Statement of Operations (Detail) - USD ($) $ in Millions	3 Months Ended			9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015		Sep. 30, 2016	Sep. 30, 2015
REVENUES AND OTHER:
Oil and Gas Production Revenues	$ 1,439	$ 1,606	[1]	$ 3,912	$ 5,256	[1]
Equity in net income (loss) of affiliates	0	0		0	0
Other	(6)	(75)	[1]	(30)	(53)	[1]
Gain on divestitures, net	5	(5)	[1]	21	204	[1],[2]
Total revenues and other	1,438	1,526	[1]	3,903	5,407	[1]
OPERATING EXPENSES:
Lease operating expenses	382	450	[1]	1,119	1,398	[1]
Gathering and transportation	51	58	[1]	155	163	[1]
Taxes other than income	9	104	[1]	85	232	[1]
Exploration	161	223	[1]	347	706	[1]
General and administrative	102	89	[1]	298	284	[1]
Depreciation, depletion, and amortization	648	872		1,995	2,492	[2]
Asset retirement obligation accretion	40	37	[1]	116	109	[1],[2]
Impairments	836	3,903	[1]	1,009	6,327	[1],[2]
Transaction, reorganization, and separation	12	0	[1]	36	120	[1]
Financing costs, net	102	160	[1]	311	401	[1]
Total operating expenses	2,343	5,896	[1]	5,471	12,232	[1]
LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(905)	(4,370)	[1]	(1,568)	(6,825)	[1]
Provision (benefit) for income taxes	(379)	(251)		(471)	(721)
NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(526)	(4,119)	[1]	(1,097)	(6,104)	[1]
Net loss from discontinued operations, net of tax	(33)	(17)	[1]	(33)	(135)	[1]
NET LOSS INCLUDING NONCONTROLLING INTEREST	(559)	(4,136)	[1]	(1,130)	(6,239)	[1],[2]
Net income attributable to noncontrolling interest	48	7	[1]	93	98	[1]
NET LOSS ATTRIBUTABLE TO COMMON STOCK	(607)	(4,143)	[1]	(1,223)	(6,337)	[1]
Reclassifications & Eliminations [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	0	0		0	0
Equity in net income (loss) of affiliates	698	2,339		902	3,818
Other	0	0		0	19
Gain on divestitures, net	0	0		0	0
Total revenues and other	698	2,339		902	3,837
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	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
Financing costs, net	0	0		0	0
Total operating expenses	0	0		0	19
LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	698	2,339		902	3,818
Provision (benefit) for income taxes	0	0		0	0
NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	698	2,339		902	3,818
Net loss from discontinued operations, net of tax	0	0		0	0
NET LOSS INCLUDING NONCONTROLLING INTEREST	698	2,339		902	3,818
Net income attributable to noncontrolling interest	0	0		0	0
NET LOSS ATTRIBUTABLE TO COMMON STOCK	698	2,339		902	3,818
Apache Corporation [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	274	344		761	1,143
Equity in net income (loss) of affiliates	(493)	(2,247)		(677)	(3,664)
Other	5	(62)		11	(107)
Gain on divestitures, net	3	(7)		1	(36)
Total revenues and other	(211)	(1,972)		96	(2,664)
OPERATING EXPENSES:
Lease operating expenses	74	97		218	329
Gathering and transportation	6	9		25	25
Taxes other than income	23	30		66	97
Exploration	58	139		184	399
General and administrative	87	76		250	214
Depreciation, depletion, and amortization	154	257		469	751
Asset retirement obligation accretion	5	4		14	11
Impairments	0	2,177		61	3,543
Transaction, reorganization, and separation	12			36	120
Financing costs, net	63	160		188	375
Total operating expenses	482	2,949		1,511	5,864
LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(693)	(4,921)		(1,415)	(8,528)
Provision (benefit) for income taxes	(119)	(785)		(225)	(2,370)
NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(574)	(4,136)		(1,190)	(6,158)
Net loss from discontinued operations, net of tax	(33)	(7)		(33)	(179)
NET LOSS INCLUDING NONCONTROLLING INTEREST	(607)	(4,143)		(1,223)	(6,337)
Net income attributable to noncontrolling interest	0	0		0	0
NET LOSS ATTRIBUTABLE TO COMMON STOCK	(607)	(4,143)		(1,223)	(6,337)
Apache Finance Canada [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	0	0		0	0
Equity in net income (loss) of affiliates	(205)	(92)		(225)	(154)
Other	7	14		28	40
Gain on divestitures, net	0	0		0	0
Total revenues and other	(198)	(78)		(197)	(114)
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
Financing costs, net	6	10		23	31
Total operating expenses	6	10		23	31
LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(204)	(88)		(220)	(145)
Provision (benefit) for income taxes	1	4		5	9
NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(205)	(92)		(225)	(154)
Net loss from discontinued operations, net of tax	0	0		0	0
NET LOSS INCLUDING NONCONTROLLING INTEREST	(205)	(92)		(225)	(154)
Net income attributable to noncontrolling interest	0	0		0	0
NET LOSS ATTRIBUTABLE TO COMMON STOCK	(205)	(92)		(225)	(154)
All Other Subsidiaries of Apache Corporation [Member]
REVENUES AND OTHER:
Oil and Gas Production Revenues	1,165	1,262		3,151	4,113
Equity in net income (loss) of affiliates	0	0		0	0
Other	(18)	(27)		(69)	(5)
Gain on divestitures, net	2	2		20	240
Total revenues and other	1,149	1,237		3,102	4,348
OPERATING EXPENSES:
Lease operating expenses	308	353		901	1,069
Gathering and transportation	45	49		130	138
Taxes other than income	(14)	74		19	135
Exploration	103	84		163	307
General and administrative	15	13		48	51
Depreciation, depletion, and amortization	494	615		1,526	1,741
Asset retirement obligation accretion	35	33		102	98
Impairments	836	1,726		948	2,784
Transaction, reorganization, and separation	0			0	0
Financing costs, net	33	(10)		100	(5)
Total operating expenses	1,855	2,937		3,937	6,318
LOSS FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(706)	(1,700)		(835)	(1,970)
Provision (benefit) for income taxes	(261)	530		(251)	1,640
NET LOSS FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(445)	(2,230)		(584)	(3,610)
Net loss from discontinued operations, net of tax	0	(10)		0	44
NET LOSS INCLUDING NONCONTROLLING INTEREST	(445)	(2,240)		(584)	(3,566)
Net income attributable to noncontrolling interest	48	7		93	98
NET LOSS ATTRIBUTABLE TO COMMON STOCK	$ (493)	$ (2,247)		$ (677)	$ (3,664)

[1] Financial information for 2015 has been recast to reflect retrospective application of the successful efforts method of accounting. See Note 1.

[2] Financial information for 2015 has been recast to reflect retrospective application of the successful efforts method of accounting. See Note 1.