Supplemental Guarantor Information - Supplemental Condensed Consolidating Statement of Operations And Comprehensive Income (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
REVENUES AND OTHER:
Oil and gas production revenues	$ 3,708	$ 4,001	$ 7,355	$ 8,022
Equity in net income (loss) of affiliates	0		0
Derivative instrument gains (losses), net	(174)	247	(194)	147
Other	(50)	20	(2)	45
Total revenues and other	3,484	4,268	7,159	8,214
OPERATING EXPENSES:
Depreciation, depletion and amortization	1,457	1,350	2,663	2,662
Asset retirement obligation accretion	45	64	89	127
Lease operating expenses	613	781	1,210	1,503
Gathering and transportation	66	77	136	150
Taxes other than income	181	170	362	399
General and administrative	94	126	199	238
Acquisition, divestiture, and separation costs	14		30
Financing costs, net	35	52	62	107
Total operating expenses	2,505	2,620	4,751	5,186
NET INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	979	1,648	2,408	3,028
Provision (benefit) for income taxes	366	611	944	1,213
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	613	1,037	1,464	1,815
Net loss from discontinued operations, net of tax	0	(2)	(517)	(63)
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	613	1,035	947	1,752
Net income attributable to noncontrolling interest	108		206
Preferred stock dividends	0	19	0	38
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	505	1,016	741	1,714
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	505	1,031	740	1,727
Reclassifications & Eliminations [Member]
REVENUES AND OTHER:
Oil and gas production revenues	0		0
Equity in net income (loss) of affiliates	(526)	(714)	(801)	(1,316)
Derivative instrument gains (losses), net	0		0
Other	4	(1)	3	(3)
Total revenues and other	(522)	(715)	(798)	(1,319)
OPERATING EXPENSES:
Depreciation, depletion and amortization	0		0
Asset retirement obligation accretion	0		0
Lease operating expenses	0		0
Gathering and transportation	0		0
Taxes other than income	0		0
General and administrative	4	(1)	3	(3)
Acquisition, divestiture, and separation costs	0		0
Financing costs, net	0		0
Total operating expenses	4	(1)	3	(3)
NET INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	(526)	(714)	(801)	(1,316)
Provision (benefit) for income taxes	0		0
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	(526)	(714)	(801)	(1,316)
Net loss from discontinued operations, net of tax	0		0
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	(526)	(714)	(801)	(1,316)
Net income attributable to noncontrolling interest	0		0
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(526)	(714)	(801)	(1,316)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	(526)	(714)	(801)	(1,316)
Apache Corporation [Member]
REVENUES AND OTHER:
Oil and gas production revenues	895	1,255	1,787	2,401
Equity in net income (loss) of affiliates	491	718	743	1,328
Derivative instrument gains (losses), net	(125)	247	(145)	147
Other	(69)	3	(72)	1
Total revenues and other	1,192	2,223	2,313	3,877
OPERATING EXPENSES:
Depreciation, depletion and amortization	356	470	684	871
Asset retirement obligation accretion	8	20	15	40
Lease operating expenses	121	267	249	548
Gathering and transportation	14	17	28	31
Taxes other than income	47	57	126	101
General and administrative	96	102	189	202
Acquisition, divestiture, and separation costs	14		30
Financing costs, net	41	34	73	68
Total operating expenses	697	967	1,394	1,861
NET INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	495	1,256	919	2,016
Provision (benefit) for income taxes	(10)	221	52	264
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	505	1,035	867	1,752
Net loss from discontinued operations, net of tax	0		(127)
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	505	1,035	740	1,752
Net income attributable to noncontrolling interest	0		0
Preferred stock dividends		19		38
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	505	1,016	740	1,714
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	505	1,031	739	1,727
Apache Finance Canada [Member]
REVENUES AND OTHER:
Oil and gas production revenues	0		0
Equity in net income (loss) of affiliates	24	(6)	53	(17)
Derivative instrument gains (losses), net	0		0
Other	13	15	27	30
Total revenues and other	37	9	80	13
OPERATING EXPENSES:
Depreciation, depletion and amortization	0		0
Asset retirement obligation accretion	0		0
Lease operating expenses	0		0
Gathering and transportation	0		0
Taxes other than income	0		0
General and administrative	0		0
Acquisition, divestiture, and separation costs	0		0
Financing costs, net	10	14	20	28
Total operating expenses	10	14	20	28
NET INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	27	(5)	60	(15)
Provision (benefit) for income taxes	(8)	(1)	2	(3)
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	35	(4)	58	(12)
Net loss from discontinued operations, net of tax	0		0
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	35	(4)	58	(12)
Net income attributable to noncontrolling interest	0		0
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	35	(4)	58	(12)
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	35	(4)	58	(12)
All Other Subsidiaries of Apache Corporation [Member]
REVENUES AND OTHER:
Oil and gas production revenues	2,813	2,746	5,568	5,621
Equity in net income (loss) of affiliates	11	2	5	5
Derivative instrument gains (losses), net	(49)		(49)
Other	2	3	40	17
Total revenues and other	2,777	2,751	5,564	5,643
OPERATING EXPENSES:
Depreciation, depletion and amortization	1,101	880	1,979	1,791
Asset retirement obligation accretion	37	44	74	87
Lease operating expenses	492	514	961	955
Gathering and transportation	52	60	108	119
Taxes other than income	134	113	236	298
General and administrative	(6)	25	7	39
Acquisition, divestiture, and separation costs	0		0
Financing costs, net	(16)	4	(31)	11
Total operating expenses	1,794	1,640	3,334	3,300
NET INCOME FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	983	1,111	2,230	2,343
Provision (benefit) for income taxes	384	391	890	952
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	599	720	1,340	1,391
Net loss from discontinued operations, net of tax	0	(2)	(390)	(63)
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	599	718	950	1,328
Net income attributable to noncontrolling interest	108		206
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	491	718	744	1,328
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	$ 491	$ 718	$ 744	$ 1,328