Supplemental Guarantor Information - Supplemental Condensed Consolidating Statement of Operations (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
REVENUES AND OTHER:
Oil and gas production revenues	$ 4,409	$ 4,141	$ 12,674	$ 12,554
Derivative instrument gains (losses), net	(422)		(275)
Other	32	38	79	133
Total revenues and other	4,019	4,179	12,478	12,687
OPERATING EXPENSES:
Depreciation, depletion and amortization	2,172	2,029	5,011	5,701
Asset retirement obligation accretion	66	60	196	172
Lease operating expenses	819	801	2,419	2,178
Gathering and transportation	83	86	237	235
Taxes other than income	185	167	610	627
General and administrative	127	124	376	384
Merger, acquisitions & transition		7		29
Financing costs, net	51	40	155	125
Total operating expenses	3,503	3,314	9,004	9,451
INCOME (LOSS) BEFORE INCOME TAXES	516	865	3,474	3,236
Provision (benefit) for income taxes	210	685	1,416	1,903
NET INCOME	306	180	2,058	1,333
Preferred stock dividends	6	19	44	57
INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	300	161	2,014	1,276
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	295	61	2,022	1,196
Apache Corporation [Member]
REVENUES AND OTHER:
Oil and gas production revenues	1,374	1,030	3,775	3,070
Equity in net income (loss) of affiliates	619	41	1,947	813
Derivative instrument gains (losses), net	(422)		(275)
Other	2		3	(1)
Total revenues and other	1,573	1,071	5,450	3,882
OPERATING EXPENSES:
Depreciation, depletion and amortization	1,041	349	1,912	997
Asset retirement obligation accretion	20	20	60	57
Lease operating expenses	254	277	802	708
Gathering and transportation	18	15	49	38
Taxes other than income	62	52	163	146
General and administrative	103	97	305	302
Merger, acquisitions & transition		7		23
Financing costs, net	36	20	104	71
Total operating expenses	1,534	837	3,395	2,342
INCOME (LOSS) BEFORE INCOME TAXES	39	234	2,055	1,540
Provision (benefit) for income taxes	(267)	54	(3)	207
NET INCOME	306	180	2,058	1,333
Preferred stock dividends	6	19	44	57
INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	300	161	2,014	1,276
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	295	61	2,022	1,196
Apache Finance Canada [Member]
REVENUES AND OTHER:
Equity in net income (loss) of affiliates	(4)	(271)	(21)	(672)
Other	16	18	46	52
Total revenues and other	12	(253)	25	(620)
OPERATING EXPENSES:
Financing costs, net	14	14	42	42
Total operating expenses	14	14	42	42
INCOME (LOSS) BEFORE INCOME TAXES	(2)	(267)	(17)	(662)
Provision (benefit) for income taxes	(1)	(67)	(4)	(166)
NET INCOME	(1)	(200)	(13)	(496)
INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(1)	(200)	(13)	(496)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(1)	(200)	(13)	(496)
All Other Subsidiaries of Apache Corporation [Member]
REVENUES AND OTHER:
Oil and gas production revenues	3,035	3,111	8,899	9,484
Equity in net income (loss) of affiliates	3	71	8	176
Other	15	21	34	85
Total revenues and other	3,053	3,203	8,941	9,745
OPERATING EXPENSES:
Depreciation, depletion and amortization	1,131	1,680	3,099	4,704
Asset retirement obligation accretion	46	40	136	115
Lease operating expenses	565	524	1,617	1,470
Gathering and transportation	65	71	188	197
Taxes other than income	123	115	447	481
General and administrative	25	28	75	85
Merger, acquisitions & transition				6
Financing costs, net	1	6	9	12
Total operating expenses	1,956	2,464	5,571	7,070
INCOME (LOSS) BEFORE INCOME TAXES	1,097	739	3,370	2,675
Provision (benefit) for income taxes	478	698	1,423	1,862
NET INCOME	619	41	1,947	813
INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	619	41	1,947	813
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	619	41	1,947	813
Reclassifications & Eliminations [Member]
REVENUES AND OTHER:
Equity in net income (loss) of affiliates	(618)	159	(1,934)	(317)
Other	(1)	(1)	(4)	(3)
Total revenues and other	(619)	158	(1,938)	(320)
OPERATING EXPENSES:
General and administrative	(1)	(1)	(4)	(3)
Total operating expenses	(1)	(1)	(4)	(3)
INCOME (LOSS) BEFORE INCOME TAXES	(618)	159	(1,934)	(317)
NET INCOME	(618)	159	(1,934)	(317)
INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(618)	159	(1,934)	(317)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	$ (618)	$ 159	$ (1,934)	$ (317)