Supplemental Guarantor Information - Supplemental Condensed Consolidating Balance Sheet (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
CURRENT ASSETS:
Cash and cash equivalents	$ 524	$ 1,906	$ 184	$ 160
Short-term restricted cash	778
Receivables, net of allowance	2,407	2,952
Inventories	794	891
Drilling advances	331	371
Derivative instruments		1
Prepaid assets and other	292	246
Intercompany receivable	0
Total current assets	5,126	6,366
PROPERTY AND EQUIPMENT, NET	52,470	52,421
OTHER ASSETS:
Intercompany receivable	0
Equity in affiliates	0
Long-term restricted cash	589
Goodwill	1,369	1,369
Deferred charges and other	1,617	1,481
Total assets	61,171	61,637	61,622
CURRENT LIABILITIES:
Accounts payable	1,491	1,616
Current debt	1	53
Asset retirement obligation	178	121
Derivative instruments	272	299
Other current liabilities	2,628	2,611
Intercompany payable	0
Total current liabilities	4,570	4,700
LONG-TERM DEBT	9,674	9,672
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	0
Income taxes	8,566	8,364
Asset retirement obligation	3,050	3,101
Other	419	407
Total deferred credits and other noncurrent liabilities	12,035	11,872
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	32,755	33,396
Noncontrolling interest	2,137	1,997
TOTAL EQUITY	34,892	35,393	32,721	31,331
Total liabilities and shareholders' equity	61,171	61,637
Reclassifications & Eliminations [Member]
CURRENT ASSETS:
Cash and cash equivalents	0	0
Short-term restricted cash	0
Receivables, net of allowance	0
Inventories	0
Drilling advances	0
Prepaid assets and other	0
Intercompany receivable	(6,065)	(5,357)
Total current assets	(6,065)	(5,357)
PROPERTY AND EQUIPMENT, NET	0
OTHER ASSETS:
Intercompany receivable	(1,327)	(1,572)
Equity in affiliates	(27,134)	(26,347)
Long-term restricted cash	0
Goodwill	0
Deferred charges and other	(1,000)	(1,000)
Total assets	(35,526)	(34,276)
CURRENT LIABILITIES:
Accounts payable	0
Current debt	0
Asset retirement obligation	0
Derivative instruments	0
Other current liabilities	0
Intercompany payable	(6,065)	(5,357)
Total current liabilities	(6,065)	(5,357)
LONG-TERM DEBT	0
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	(1,327)	(1,572)
Income taxes	0
Asset retirement obligation	0
Other	(1,000)	(1,000)
Total deferred credits and other noncurrent liabilities	(2,327)	(2,572)
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	(27,134)	(26,347)
Noncontrolling interest	0
TOTAL EQUITY	(27,134)	(26,347)
Total liabilities and shareholders' equity	(35,526)	(34,276)
Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	9	155
Short-term restricted cash	0
Receivables, net of allowance	873	1,043
Inventories	24	48
Drilling advances	29	49
Derivative instruments		1
Prepaid assets and other	90	99
Intercompany receivable	6,065	5,357
Total current assets	7,090	6,752
PROPERTY AND EQUIPMENT, NET	17,436	16,092
OTHER ASSETS:
Intercompany receivable	0	1,572
Equity in affiliates	25,486	24,743
Long-term restricted cash	0
Goodwill	173	173
Deferred charges and other	191	166
Total assets	50,376	49,498
CURRENT LIABILITIES:
Accounts payable	831	956
Current debt	0
Asset retirement obligation	115	115
Derivative instruments	272	299
Other current liabilities	1,128	896
Intercompany payable	0
Total current liabilities	2,346	2,266
LONG-TERM DEBT	9,375	9,374
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	1,327
Income taxes	3,641	3,586
Asset retirement obligation	455	430
Other	477	446
Total deferred credits and other noncurrent liabilities	5,900	4,462
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	32,755	33,396
Noncontrolling interest	0
TOTAL EQUITY	32,755	33,396
Total liabilities and shareholders' equity	50,376	49,498
Apache Finance Canada [Member]
CURRENT ASSETS:
Cash and cash equivalents	0	3
Short-term restricted cash	0
Receivables, net of allowance	0
Inventories	0
Drilling advances	2
Prepaid assets and other	0
Intercompany receivable	0
Total current assets	2	3
PROPERTY AND EQUIPMENT, NET	0
OTHER ASSETS:
Intercompany receivable	0
Equity in affiliates	1,203	1,155
Long-term restricted cash	0
Goodwill	0
Deferred charges and other	1,005	1,006
Total assets	2,210	2,164
CURRENT LIABILITIES:
Accounts payable	13	2
Current debt	0
Asset retirement obligation	0
Derivative instruments	0
Other current liabilities	1	10
Intercompany payable	0
Total current liabilities	14	12
LONG-TERM DEBT	298	298
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	0
Income taxes	0
Asset retirement obligation	0
Other	250	250
Total deferred credits and other noncurrent liabilities	250	250
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	1,648	1,604
Noncontrolling interest	0
TOTAL EQUITY	1,648	1,604
Total liabilities and shareholders' equity	2,210	2,164
All Other Subsidiaries of Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	515	1,748	184	160
Short-term restricted cash	778
Receivables, net of allowance	1,534	1,909
Inventories	770	843
Drilling advances	300	322
Prepaid assets and other	202	146
Intercompany receivable	0
Total current assets	4,099	4,968
PROPERTY AND EQUIPMENT, NET	35,034	36,329
OTHER ASSETS:
Intercompany receivable	1,327
Equity in affiliates	445	449
Long-term restricted cash	589
Goodwill	1,196	1,196
Deferred charges and other	1,421	1,309
Total assets	44,111	44,251
CURRENT LIABILITIES:
Accounts payable	647	658
Current debt	1	53
Asset retirement obligation	63	6
Derivative instruments	0
Other current liabilities	1,499	1,705
Intercompany payable	6,065	5,357
Total current liabilities	8,275	7,779
LONG-TERM DEBT	1
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	0	1,572
Income taxes	4,925	4,778
Asset retirement obligation	2,595	2,671
Other	692	711
Total deferred credits and other noncurrent liabilities	8,212	9,732
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	25,486	24,743
Noncontrolling interest	2,137	1,997
TOTAL EQUITY	27,623	26,740
Total liabilities and shareholders' equity	$ 44,111	$ 44,251