Supplemental Guarantor Information - Supplemental Condensed Consolidating Balance Sheet (Detail) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014	Jun. 30, 2014	Dec. 31, 2013
CURRENT ASSETS:
Cash and cash equivalents	$ 2,950	$ 769	$ 524	$ 1,906
Receivables, net of allowance	1,589	2,024
Inventories	629	708
Drilling advances	193	388
Assets held for sale		1,628
Deferred tax asset	84	769
Prepaid assets and other	48	129
Total current assets	5,493	6,415
PROPERTY AND EQUIPMENT, NET	28,315	48,076
OTHER ASSETS:
Goodwill, net		87
Deferred charges and other	1,504	1,461
Total assets	35,312	55,952	52,900
CURRENT LIABILITIES:
Accounts payable	710	1,210
Asset retirement obligation	28	37
Other current liabilities	1,673	2,454
Total current liabilities	2,383	3,664
LONG-TERM DEBT	9,676	11,245
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Income taxes	2,644	9,499
Asset retirement obligation	2,534	3,048
Other	320	359
Total deferred credits and other noncurrent liabilities	$ 5,498	$ 12,906
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	$ 15,544	$ 25,937
Noncontrolling interest	2,211	2,200
TOTAL EQUITY	17,755	28,137	34,892	35,393
Total liabilities and shareholders' equity	35,312	55,952
Reclassifications & Eliminations [Member]
CURRENT ASSETS:
Intercompany receivable	(5,420)	(4,939)
Total current assets	(5,420)	(4,939)
OTHER ASSETS:
Intercompany receivable	(691)	(608)
Equity in affiliates	(22,264)	(27,104)
Deferred charges and other	(1,000)	(1,000)
Total assets	(29,375)	(33,651)
CURRENT LIABILITIES:
Intercompany payable	(5,420)	(4,939)
Total current liabilities	(5,420)	(4,939)
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	(691)	(608)
Other	(1,000)	(1,000)
Total deferred credits and other noncurrent liabilities	$ (1,691)	$ (1,608)
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	$ (22,264)	$ (27,104)
TOTAL EQUITY	(22,264)	(27,104)
Total liabilities and shareholders' equity	(29,375)	(33,651)
Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	1,953	267	9	155
Receivables, net of allowance	470	837
Inventories	38	24
Drilling advances	17	34
Deferred tax asset	72	612
Prepaid assets and other	22	32
Intercompany receivable	5,420	4,939
Total current assets	7,992	6,745
PROPERTY AND EQUIPMENT, NET	5,096	13,940
OTHER ASSETS:
Equity in affiliates	21,663	25,791
Deferred charges and other	176	175
Total assets	34,927	46,651
CURRENT LIABILITIES:
Accounts payable	449	748
Asset retirement obligation		28
Other current liabilities	838	1,014
Total current liabilities	1,287	1,790
LONG-TERM DEBT	9,378	10,947
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	691	608
Income taxes	502	5,076
Asset retirement obligation	220	211
Other	7,305	2,082
Total deferred credits and other noncurrent liabilities	$ 8,718	$ 7,977
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	$ 15,544	$ 25,937
TOTAL EQUITY	15,544	25,937
Total liabilities and shareholders' equity	34,927	46,651
Apache Finance Canada [Member]
CURRENT ASSETS:
Cash and cash equivalents				3
Drilling advances	1	1
Total current assets	1	1
OTHER ASSETS:
Equity in affiliates	149	869
Deferred charges and other	1,000	1,002
Total assets	1,150	1,872
CURRENT LIABILITIES:
Accounts payable		10
Other current liabilities	1	1
Total current liabilities	1	11
LONG-TERM DEBT	298	298
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Other	250	250
Total deferred credits and other noncurrent liabilities	$ 250	$ 250
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	$ 601	$ 1,313
TOTAL EQUITY	601	1,313
Total liabilities and shareholders' equity	1,150	1,872
All Other Subsidiaries of Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	997	502	$ 515	$ 1,748
Receivables, net of allowance	1,119	1,187
Inventories	591	684
Drilling advances	175	353
Assets held for sale		1,628
Deferred tax asset	12	157
Prepaid assets and other	26	97
Total current assets	2,920	4,608
PROPERTY AND EQUIPMENT, NET	23,219	34,136
OTHER ASSETS:
Intercompany receivable	691	608
Equity in affiliates	452	444
Goodwill, net		87
Deferred charges and other	1,328	1,197
Total assets	28,610	41,080
CURRENT LIABILITIES:
Accounts payable	261	452
Asset retirement obligation		9
Other current liabilities	834	1,402
Intercompany payable	5,420	4,939
Total current liabilities	6,515	6,802
LONG-TERM DEBT	0
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Income taxes	2,142	4,423
Asset retirement obligation	2,314	2,837
Other	(6,235)	(973)
Total deferred credits and other noncurrent liabilities	$ (1,779)	$ 6,287
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	$ 21,663	$ 25,791
Noncontrolling interest	2,211	2,200
TOTAL EQUITY	23,874	27,991
Total liabilities and shareholders' equity	$ 28,610	$ 41,080