Supplemental Guarantor Information - Supplemental Condensed Consolidating Statement of Operations (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
REVENUES AND OTHER:
Oil and gas production revenues	$ 1,952	$ 3,471	$ 3,590	$ 6,862
Derivative instrument gains (losses), net		(174)		(194)
Other	25	(8)	17	9
Total revenues and other	1,977	3,289	3,607	6,677
OPERATING EXPENSES:
Depreciation, depletion and amortization	6,822	1,358	15,124	2,458
Asset retirement obligation accretion	36	38	72	76
Lease operating expenses	467	560	948	1,108
Gathering and transportation	49	66	105	136
Taxes other than income	55	177	128	358
General and administrative	111	113	193	221
Transaction, reorganization, and separation costs	66	14	120	32
Financing costs, net	63	52	133	97
Total operating expenses	7,669	2,378	16,823	4,486
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(5,692)	911	(13,216)	2,191
Provision (benefit) for income taxes	(860)	354	(3,880)	884
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(4,832)	557	(9,336)	1,307
Net income (loss) from discontinued operations, net of tax	(732)	56	(864)	(360)
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	(5,564)	613	(10,200)	947
Net income attributable to noncontrolling interest	36	108	51	206
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(5,600)	505	(10,251)	741
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(5,600)	505	(10,251)	740
Reclassifications & Eliminations [Member]
REVENUES AND OTHER:
Equity in net income (loss) of affiliates	2,381	(526)	4,119	(801)
Other	19	4	19	3
Total revenues and other	2,400	(522)	4,138	(798)
OPERATING EXPENSES:
General and administrative	19	4	19	3
Total operating expenses	19	4	19	3
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	2,381	(526)	4,119	(801)
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	2,381	(526)	4,119	(801)
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	2,381	(526)	4,119	(801)
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	2,381	(526)	4,119	(801)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	2,381	(526)	4,119	(801)
Apache Corporation [Member]
REVENUES AND OTHER:
Oil and gas production revenues	434	895	799	1,787
Equity in net income (loss) of affiliates	(1,987)	491	(3,072)	744
Derivative instrument gains (losses), net		(125)		(145)
Other	(10)	(69)	(50)	(73)
Total revenues and other	(1,563)	1,192	(2,323)	2,313
OPERATING EXPENSES:
Depreciation, depletion and amortization	4,346	356	9,845	684
Asset retirement obligation accretion	3	8	7	15
Lease operating expenses	108	121	232	249
Gathering and transportation	7	14	16	28
Taxes other than income	33	47	67	126
General and administrative	74	96	138	189
Transaction, reorganization, and separation costs	66	14	120	30
Financing costs, net	71	41	123	73
Total operating expenses	4,708	697	10,548	1,394
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(6,271)	495	(12,871)	919
Provision (benefit) for income taxes	(843)	(10)	(2,792)	52
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(5,428)	505	(10,079)	867
Net income (loss) from discontinued operations, net of tax	(172)		(172)	(127)
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	(5,600)	505	(10,251)	740
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(5,600)	505	(10,251)	740
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(5,600)	505	(10,251)	739
Apache Finance Canada [Member]
REVENUES AND OTHER:
Equity in net income (loss) of affiliates	(393)	24	(1,047)	53
Other	12	13	26	27
Total revenues and other	(381)	37	(1,021)	80
OPERATING EXPENSES:
Financing costs, net	11	10	21	20
Total operating expenses	11	10	21	20
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(392)	27	(1,042)	60
Provision (benefit) for income taxes	2	(8)	5	2
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(394)	35	(1,047)	58
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	(394)	35	(1,047)	58
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(394)	35	(1,047)	58
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(394)	35	(1,047)	58
All Other Subsidiaries of Apache Corporation [Member]
REVENUES AND OTHER:
Oil and gas production revenues	1,518	2,576	2,791	5,075
Equity in net income (loss) of affiliates	(1)	11		4
Derivative instrument gains (losses), net		(49)		(49)
Other	4	44	22	52
Total revenues and other	1,521	2,582	2,813	5,082
OPERATING EXPENSES:
Depreciation, depletion and amortization	2,476	1,002	5,279	1,774
Asset retirement obligation accretion	33	30	65	61
Lease operating expenses	359	439	716	859
Gathering and transportation	42	52	89	108
Taxes other than income	22	130	61	232
General and administrative	18	13	36	29
Transaction, reorganization, and separation costs				2
Financing costs, net	(19)	1	(11)	4
Total operating expenses	2,931	1,667	6,235	3,069
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(1,410)	915	(3,422)	2,013
Provision (benefit) for income taxes	(19)	372	(1,093)	830
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(1,391)	543	(2,329)	1,183
Net income (loss) from discontinued operations, net of tax	(560)	56	(692)	(233)
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	(1,951)	599	(3,021)	950
Net income attributable to noncontrolling interest	36	108	51	206
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(1,981)	491	(3,072)	744
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	$ (1,987)	$ 491	$ (3,072)	$ 744