Supplemental Guarantor Information - Supplemental Condensed Consolidating Statement of Operations (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
REVENUES AND OTHER:
Oil and gas production revenues	$ 4,119	$ 3,956	$ 8,265	$ 8,413
Derivative instrument gains (losses), net	247		147
Other	17	16	47	95
Total revenues and other	4,383	3,972	8,459	8,508
OPERATING EXPENSES:
Depreciation, depletion and amortization	1,404	1,932	2,839	3,672
Asset retirement obligation accretion	65	57	130	112
Lease operating expenses	829	704	1,600	1,377
Gathering and transportation	80	72	154	149
Taxes other than income	183	203	425	460
General and administrative	133	132	249	260
Merger, acquisitions & transition		16		22
Financing costs, net	51	45	104	85
Total operating expenses	2,745	3,161	5,501	6,137
INCOME (LOSS) BEFORE INCOME TAXES	1,638	811	2,958	2,371
Provision (benefit) for income taxes	603	455	1,206	1,218
NET INCOME	1,035	356	1,752	1,153
Preferred stock dividends	19	19	38	38
INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	1,016	337	1,714	1,115
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	1,031	390	1,727	1,135
Apache Corporation [Member]
REVENUES AND OTHER:
Oil and gas production revenues	1,255	982	2,401	2,040
Equity in net income (loss) of affiliates	718	217	1,328	772
Derivative instrument gains (losses), net	247		147
Other	3		1	(1)
Total revenues and other	2,223	1,199	3,877	2,811
OPERATING EXPENSES:
Depreciation, depletion and amortization	470	356	871	648
Asset retirement obligation accretion	20	18	40	37
Lease operating expenses	267	216	548	431
Gathering and transportation	17	11	31	23
Taxes other than income	57	44	101	94
General and administrative	102	102	202	205
Merger, acquisitions & transition		14		16
Financing costs, net	34	7	68	51
Total operating expenses	967	768	1,861	1,505
INCOME (LOSS) BEFORE INCOME TAXES	1,256	431	2,016	1,306
Provision (benefit) for income taxes	221	75	264	153
NET INCOME	1,035	356	1,752	1,153
Preferred stock dividends	19	19	38	38
INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	1,016	337	1,714	1,115
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	1,031	390	1,727	1,135
Apache Finance Canada [Member]
REVENUES AND OTHER:
Equity in net income (loss) of affiliates	(6)	(227)	(17)	(401)
Other	15	17	30	34
Total revenues and other	9	(210)	13	(367)
OPERATING EXPENSES:
Financing costs, net	14	14	28	28
Total operating expenses	14	14	28	28
INCOME (LOSS) BEFORE INCOME TAXES	(5)	(224)	(15)	(395)
Provision (benefit) for income taxes	(1)	(56)	(3)	(99)
NET INCOME	(4)	(168)	(12)	(296)
INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(4)	(168)	(12)	(296)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(4)	(168)	(12)	(296)
All Other Subsidiaries of Apache Corporation [Member]
REVENUES AND OTHER:
Oil and gas production revenues	2,864	2,974	5,864	6,373
Equity in net income (loss) of affiliates	2	59	5	105
Other			19	64
Total revenues and other	2,866	3,033	5,888	6,542
OPERATING EXPENSES:
Depreciation, depletion and amortization	934	1,576	1,968	3,024
Asset retirement obligation accretion	45	39	90	75
Lease operating expenses	562	488	1,052	946
Gathering and transportation	63	61	123	126
Taxes other than income	126	159	324	366
General and administrative	32	31	50	57
Merger, acquisitions & transition		2		6
Financing costs, net	3	24	8	6
Total operating expenses	1,765	2,380	3,615	4,606
INCOME (LOSS) BEFORE INCOME TAXES	1,101	653	2,273	1,936
Provision (benefit) for income taxes	383	436	945	1,164
NET INCOME	718	217	1,328	772
INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	718	217	1,328	772
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	718	217	1,328	772
Reclassifications & Eliminations [Member]
REVENUES AND OTHER:
Equity in net income (loss) of affiliates	(714)	(49)	(1,316)	(476)
Other	(1)	(1)	(3)	(2)
Total revenues and other	(715)	(50)	(1,319)	(478)
OPERATING EXPENSES:
General and administrative	(1)	(1)	(3)	(2)
Total operating expenses	(1)	(1)	(3)	(2)
INCOME (LOSS) BEFORE INCOME TAXES	(714)	(49)	(1,316)	(476)
NET INCOME	(714)	(49)	(1,316)	(476)
INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(714)	(49)	(1,316)	(476)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	$ (714)	$ (49)	$ (1,316)	$ (476)