Supplemental Guarantor Information - Supplemental Condensed Consolidating Balance Sheet (Detail) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015	Jun. 30, 2015	Dec. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 1,201	$ 1,467	$ 2,950	$ 679
Receivables, net of allowance	1,016	1,253
Inventories	530	570
Drilling advances	202	172
Deferred tax asset	0
Prepaid assets and other	343	290
Intercompany receivable	0	0
Total current assets	3,292	3,752
PROPERTY AND EQUIPMENT, NET	20,143	20,838
OTHER ASSETS:
Intercompany receivable	0	0
Equity in affiliates	0	0
Deferred charges and other	911	910
Total assets	24,346	25,500	36,802
CURRENT LIABILITIES:
Accounts payable	544	618
Other current liabilities	1,026	1,223
Intercompany payable	0	0
Total current liabilities	1,570	1,841
LONG-TERM DEBT	8,719	8,716
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	0	0
Income taxes	2,308	2,529
Asset retirement obligation	2,706	2,562
Other	347	362
Total deferred credits and other noncurrent liabilities	5,361	5,453
COMMITMENTS AND CONTINGENCIES (Note 9)
APACHE SHAREHOLDERS’ EQUITY	7,142	7,888
Noncontrolling interest	1,554	1,602
TOTAL EQUITY	8,696	9,490	18,256	20,541
TOTAL LIABILITIES AND EQUITY	24,346	25,500
Reclassifications & Eliminations [Member]
CURRENT ASSETS:
Cash and cash equivalents	0	0	0	0
Receivables, net of allowance	0	0
Inventories	0	0
Drilling advances	0	0
Deferred tax asset	0
Prepaid assets and other	0	0
Intercompany receivable	(5,371)	(5,212)
Total current assets	(5,371)	(5,212)
PROPERTY AND EQUIPMENT, NET	0	0
OTHER ASSETS:
Intercompany receivable	(11,083)	(10,744)
Equity in affiliates	(15,527)	(15,731)
Deferred charges and other	(1,000)	(1,000)
Total assets	(32,981)	(32,687)
CURRENT LIABILITIES:
Accounts payable	0	0
Other current liabilities	0	0
Intercompany payable	(5,371)	(5,212)
Total current liabilities	(5,371)	(5,212)
LONG-TERM DEBT	0	0
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	(11,083)	(10,744)
Income taxes	0	0
Asset retirement obligation	0	0
Other	(1,000)	(1,000)
Total deferred credits and other noncurrent liabilities	(12,083)	(11,744)
COMMITMENTS AND CONTINGENCIES (Note 9)
APACHE SHAREHOLDERS’ EQUITY	(15,527)	(15,731)
Noncontrolling interest	0	0
TOTAL EQUITY	(15,527)	(15,731)
TOTAL LIABILITIES AND EQUITY	(32,981)	(32,687)
Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	152	378	1,953	267
Receivables, net of allowance	330	314
Inventories	32	34
Drilling advances	6	16
Deferred tax asset	(28)
Prepaid assets and other	193	102
Intercompany receivable	5,371	5,212
Total current assets	6,056	6,056
PROPERTY AND EQUIPMENT, NET	6,304	6,546
OTHER ASSETS:
Intercompany receivable	0	0
Equity in affiliates	15,908	16,092
Deferred charges and other	93	96
Total assets	28,361	28,790
CURRENT LIABILITIES:
Accounts payable	324	409
Other current liabilities	403	539
Intercompany payable	0	0
Total current liabilities	727	948
LONG-TERM DEBT	8,431	8,418
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	10,976	10,744
Income taxes	(114)	(412)
Asset retirement obligation	277	271
Other	922	933
Total deferred credits and other noncurrent liabilities	12,061	11,536
COMMITMENTS AND CONTINGENCIES (Note 9)
APACHE SHAREHOLDERS’ EQUITY	7,142	7,888
Noncontrolling interest	0	0
TOTAL EQUITY	7,142	7,888
TOTAL LIABILITIES AND EQUITY	28,361	28,790
Apache Finance Canada [Member]
CURRENT ASSETS:
Cash and cash equivalents	0	0	0	0
Receivables, net of allowance	0	0
Inventories	0	0
Drilling advances	0	0
Deferred tax asset	0
Prepaid assets and other	0	0
Intercompany receivable	0	0
Total current assets	0	0
PROPERTY AND EQUIPMENT, NET	0	0
OTHER ASSETS:
Intercompany receivable	0	0
Equity in affiliates	(1,080)	(807)
Deferred charges and other	1,000	1,001
Total assets	(80)	194
CURRENT LIABILITIES:
Accounts payable	(2)	0
Other current liabilities	2	3
Intercompany payable	0	0
Total current liabilities	0	3
LONG-TERM DEBT	297	298
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	0	0
Income taxes	5	4
Asset retirement obligation	0	0
Other	(1)	250
Total deferred credits and other noncurrent liabilities	4	254
COMMITMENTS AND CONTINGENCIES (Note 9)
APACHE SHAREHOLDERS’ EQUITY	(381)	(361)
Noncontrolling interest	0	0
TOTAL EQUITY	(381)	(361)
TOTAL LIABILITIES AND EQUITY	(80)	194
All Other Subsidiaries of Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	1,049	1,089	$ 997	$ 412
Receivables, net of allowance	686	939
Inventories	498	536
Drilling advances	196	156
Deferred tax asset	28
Prepaid assets and other	150	188
Intercompany receivable	0	0
Total current assets	2,607	2,908
PROPERTY AND EQUIPMENT, NET	13,839	14,292
OTHER ASSETS:
Intercompany receivable	11,083	10,744
Equity in affiliates	699	446
Deferred charges and other	818	813
Total assets	29,046	29,203
CURRENT LIABILITIES:
Accounts payable	222	209
Other current liabilities	621	681
Intercompany payable	5,371	5,212
Total current liabilities	6,214	6,102
LONG-TERM DEBT	(9)	0
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	107	0
Income taxes	2,417	2,937
Asset retirement obligation	2,429	2,291
Other	426	179
Total deferred credits and other noncurrent liabilities	5,379	5,407
COMMITMENTS AND CONTINGENCIES (Note 9)
APACHE SHAREHOLDERS’ EQUITY	15,908	16,092
Noncontrolling interest	1,554	1,602
TOTAL EQUITY	17,462	17,694
TOTAL LIABILITIES AND EQUITY	$ 29,046	$ 29,203