Supplemental Guarantor Information - Supplemental Condensed Consolidating Statement of Cash Flows (Detail) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2017	Mar. 31, 2016
Condensed Financial Statements, Captions [Line Items]
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	$ 455	$ 239
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	(322)	(546)
Leasehold and property acquisitions	(49)	(19)
Additions to gas gathering, transmission, and processing facilities	(142)	0
Proceeds from sale of other oil and gas properties	426	0
Investment in subsidiaries, net	0	0
Other	(6)	10
NET CASH USED IN INVESTING ACTIVITIES	(93)	(555)
CASH FLOWS FROM FINANCING ACTIVITIES:
Intercompany borrowings	0	0
Payments on fixed-rate debt	(70)	0
Distributions to noncontrolling interest	(57)	(54)
Dividends paid	(95)	(95)
Other	4	2
NET CASH USED IN FINANCING ACTIVITIES	(218)	(147)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	144	(463)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	1,377	1,467
CASH AND CASH EQUIVALENTS AT END OF PERIOD	1,521	1,004
Reclassifications & Eliminations [Member]
Condensed Financial Statements, Captions [Line Items]
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	0	0
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	0	0
Leasehold and property acquisitions	0	0
Additions to gas gathering, transmission, and processing facilities	0	0
Proceeds from sale of other oil and gas properties	0
Investment in subsidiaries, net	(323)	6
Other	0	0
NET CASH USED IN INVESTING ACTIVITIES	(323)	6
CASH FLOWS FROM FINANCING ACTIVITIES:
Intercompany borrowings	323	(6)
Payments on fixed-rate debt	0
Distributions to noncontrolling interest	0	0
Dividends paid	0	0
Other	0	0
NET CASH USED IN FINANCING ACTIVITIES	323	(6)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	0	0
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	0	0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	0	0
Apache Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	(24)	44
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	(171)	(81)
Leasehold and property acquisitions	(45)	(19)
Additions to gas gathering, transmission, and processing facilities	0	1
Proceeds from sale of other oil and gas properties	0
Investment in subsidiaries, net	323	(6)
Other	(9)	(34)
NET CASH USED IN INVESTING ACTIVITIES	98	(139)
CASH FLOWS FROM FINANCING ACTIVITIES:
Intercompany borrowings	0	0
Payments on fixed-rate debt	(70)
Distributions to noncontrolling interest	0	0
Dividends paid	(95)	(95)
Other	0	1
NET CASH USED IN FINANCING ACTIVITIES	(165)	(94)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(91)	(189)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	344	378
CASH AND CASH EQUIVALENTS AT END OF PERIOD	253	189
Apache Finance Canada [Member]
Condensed Financial Statements, Captions [Line Items]
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	(2)	11
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	0	0
Leasehold and property acquisitions	0	0
Additions to gas gathering, transmission, and processing facilities	0	0
Proceeds from sale of other oil and gas properties	0
Investment in subsidiaries, net	0	0
Other	0	0
NET CASH USED IN INVESTING ACTIVITIES	0	0
CASH FLOWS FROM FINANCING ACTIVITIES:
Intercompany borrowings	2	(7)
Payments on fixed-rate debt	0
Distributions to noncontrolling interest	0	0
Dividends paid	0	0
Other	0	(4)
NET CASH USED IN FINANCING ACTIVITIES	2	(11)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	0	0
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	0	0
CASH AND CASH EQUIVALENTS AT END OF PERIOD	0	0
All Other Subsidiaries of Apache Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	481	184
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	(151)	(465)
Leasehold and property acquisitions	(4)	0
Additions to gas gathering, transmission, and processing facilities	(142)	(1)
Proceeds from sale of other oil and gas properties	426
Investment in subsidiaries, net	0	0
Other	3	44
NET CASH USED IN INVESTING ACTIVITIES	132	(422)
CASH FLOWS FROM FINANCING ACTIVITIES:
Intercompany borrowings	(325)	13
Payments on fixed-rate debt	0
Distributions to noncontrolling interest	(57)	(54)
Dividends paid	0	0
Other	4	5
NET CASH USED IN FINANCING ACTIVITIES	(378)	(36)
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	235	(274)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	1,033	1,089
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$ 1,268	$ 815

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Amount of cash inflow (outflow) from financing activities, including discontinued operations. Financing activity cash flows include obtaining resources from owners and providing them with a return on, and a return of, their investment; borrowing money and repaying amounts borrowed, or settling the obligation; and obtaining and paying for other resources obtained from creditors on long-term credit.

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The cash outflow to purchase of mineral interests in oil and gas properties for use in the normal oil and gas operations and not intended for resale.

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