Supplemental Guarantor Information - Supplemental Condensed Consolidating Balance Sheet (Detail) - USD ($) $ in Millions	Mar. 31, 2016	Dec. 31, 2015	Mar. 31, 2015	Dec. 31, 2014
CURRENT ASSETS:
Cash and cash equivalents	$ 1,004	$ 1,467	$ 229	$ 769
Receivables, net of allowance	1,120	1,253
Inventories	547	570
Drilling advances	190	172
Deferred tax asset	0
Prepaid assets and other	361	290
Intercompany receivable	0	0
Total current assets	3,222	3,752
PROPERTY AND EQUIPMENT, NET	13,542	14,119
OTHER ASSETS:
Intercompany receivable	0	0
Equity in affiliates	0	0
Deferred charges and other	915	910
Total assets	17,679	18,781	39,606
CURRENT LIABILITIES:
Accounts payable	571	618
Other current liabilities	1,027	1,223
Intercompany payable	0	0
Total current liabilities	1,598	1,841
LONG-TERM DEBT	8,718	8,716
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	0	0
Income taxes	891	1,072
Asset retirement obligation	2,586	2,562
Other	332	362
Total deferred credits and other noncurrent liabilities	$ 3,809	$ 3,996
COMMITMENTS AND CONTINGENCIES (Note 7)
APACHE SHAREHOLDERS’ EQUITY	$ 2,018	$ 2,566
Noncontrolling interest	1,536	1,662
TOTAL EQUITY	3,554	4,228	23,405	28,137
TOTAL LIABILITIES AND EQUITY	17,679	18,781
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	(5,330)	(5,212)
Total current assets	(5,330)	(5,212)
PROPERTY AND EQUIPMENT, NET	0	0
OTHER ASSETS:
Intercompany receivable	(9,385)	(9,459)
Equity in affiliates	(14,763)	(15,735)
Deferred charges and other	(1,000)	(1,000)
Total assets	(30,478)	(31,406)
CURRENT LIABILITIES:
Accounts payable	0	0
Other current liabilities	0	0
Intercompany payable	(5,330)	(5,212)
Total current liabilities	(5,330)	(5,212)
LONG-TERM DEBT	0	0
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	(9,385)	(9,459)
Income taxes	0	0
Asset retirement obligation	0	0
Other	(1,000)	(1,000)
Total deferred credits and other noncurrent liabilities	$ (10,385)	$ (10,459)
COMMITMENTS AND CONTINGENCIES (Note 7)
APACHE SHAREHOLDERS’ EQUITY	$ (14,763)	$ (15,735)
Noncontrolling interest	0	0
TOTAL EQUITY	(14,763)	(15,735)
TOTAL LIABILITIES AND EQUITY	(30,478)	(31,406)
Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	189	378	9	267
Receivables, net of allowance	314	314
Inventories	34	34
Drilling advances	15	16
Deferred tax asset	(28)
Prepaid assets and other	199	102
Intercompany receivable	5,330	5,212
Total current assets	6,053	6,056
PROPERTY AND EQUIPMENT, NET	0	0
OTHER ASSETS:
Intercompany receivable	0	0
Equity in affiliates	15,530	16,443
Deferred charges and other	99	96
Total assets	21,682	22,595
CURRENT LIABILITIES:
Accounts payable	330	409
Other current liabilities	353	539
Intercompany payable	0	0
Total current liabilities	683	948
LONG-TERM DEBT	8,421	8,418
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	9,385	9,459
Income taxes	0	0
Asset retirement obligation	274	271
Other	901	933
Total deferred credits and other noncurrent liabilities	$ 10,560	$ 10,663
COMMITMENTS AND CONTINGENCIES (Note 7)
APACHE SHAREHOLDERS’ EQUITY	$ 2,018	$ 2,566
Noncontrolling interest	0	0
TOTAL EQUITY	2,018	2,566
TOTAL LIABILITIES AND EQUITY	21,682	22,595
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	(1,205)	(1,154)
Deferred charges and other	1,000	1,001
Total assets	(205)	(153)
CURRENT LIABILITIES:
Accounts payable	3	0
Other current liabilities	7	3
Intercompany payable	0	0
Total current liabilities	10	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	250	250
Total deferred credits and other noncurrent liabilities	$ 255	$ 254
COMMITMENTS AND CONTINGENCIES (Note 7)
APACHE SHAREHOLDERS’ EQUITY	$ (767)	$ (708)
Noncontrolling interest	0	0
TOTAL EQUITY	(767)	(708)
TOTAL LIABILITIES AND EQUITY	(205)	(153)
All Other Subsidiaries of Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	815	1,089	$ 220	$ 502
Receivables, net of allowance	806	939
Inventories	513	536
Drilling advances	175	156
Deferred tax asset	28
Prepaid assets and other	162	188
Intercompany receivable	0	0
Total current assets	2,499	2,908
PROPERTY AND EQUIPMENT, NET	13,542	14,119
OTHER ASSETS:
Intercompany receivable	9,385	9,459
Equity in affiliates	438	446
Deferred charges and other	816	813
Total assets	26,680	27,745
CURRENT LIABILITIES:
Accounts payable	238	209
Other current liabilities	667	681
Intercompany payable	5,330	5,212
Total current liabilities	6,235	6,102
LONG-TERM DEBT	0	0
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	0	0
Income taxes	886	1,068
Asset retirement obligation	2,312	2,291
Other	181	179
Total deferred credits and other noncurrent liabilities	$ 3,379	$ 3,538
COMMITMENTS AND CONTINGENCIES (Note 7)
APACHE SHAREHOLDERS’ EQUITY	$ 15,530	$ 16,443
Noncontrolling interest	1,536	1,662
TOTAL EQUITY	17,066	18,105
TOTAL LIABILITIES AND EQUITY	$ 26,680	$ 27,745