Supplemental Guarantor Information - Balance Sheets (Detail) - USD ($) $ in Millions	Jun. 30, 2017	Dec. 31, 2016	Jun. 30, 2016	Dec. 31, 2015
CURRENT ASSETS:
Cash and cash equivalents	$ 1,667	$ 1,377	$ 1,201	$ 1,467
Receivables, net of allowance	1,015	1,128
Inventories	416	476
Drilling advances	99	81
Assets held for sale	1,231	0
Prepaid assets and other	219	179
Intercompany receivable	0	0
Total current assets	4,647	3,241
PROPERTY AND EQUIPMENT, NET	17,551	18,867
OTHER ASSETS:
Intercompany receivable	0	0
Equity in affiliates	0	0
Deferred charges and other	404	411
Total assets	22,602	22,519	24,346
CURRENT LIABILITIES:
Accounts payable	533	585
Liabilities held for sale	939	0
Other current liabilities	1,401	1,258
Intercompany payable	0	0
Total current liabilities	2,873	1,843
LONG-TERM DEBT	8,329	8,544
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	0	0
Income taxes	1,058	1,710
Asset retirement obligation	1,811	2,432
Other	266	311
Total deferred credits and other noncurrent liabilities	3,135	4,453
COMMITMENTS AND CONTINGENCIES (Note 9)
APACHE SHAREHOLDERS’ EQUITY	6,899	6,238
Noncontrolling interest	1,366	1,441
TOTAL EQUITY	8,265	7,679	8,696	9,490
TOTAL LIABILITIES AND EQUITY	22,602	22,519
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
Assets held for sale	0
Prepaid assets and other	0	0
Intercompany receivable	(5,453)	(5,038)
Total current assets	(5,453)	(5,038)
PROPERTY AND EQUIPMENT, NET	0	0
OTHER ASSETS:
Intercompany receivable	(12,876)	(12,152)
Equity in affiliates	(15,144)	(14,983)
Deferred charges and other	(1,000)	(1,000)
Total assets	(34,473)	(33,173)
CURRENT LIABILITIES:
Accounts payable	0	0
Liabilities held for sale	0
Other current liabilities	0	0
Intercompany payable	(5,453)	(5,038)
Total current liabilities	(5,453)	(5,038)
LONG-TERM DEBT	0	0
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	(12,876)	(12,152)
Income taxes	0	0
Asset retirement obligation	0	0
Other	(1,000)	(1,000)
Total deferred credits and other noncurrent liabilities	(13,876)	(13,152)
COMMITMENTS AND CONTINGENCIES (Note 9)
APACHE SHAREHOLDERS’ EQUITY	(15,144)	(14,983)
Noncontrolling interest	0	0
TOTAL EQUITY	(15,144)	(14,983)
TOTAL LIABILITIES AND EQUITY	(34,473)	(33,173)
Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	170	344	152	378
Receivables, net of allowance	300	358
Inventories	24	29
Drilling advances	5	4
Assets held for sale	0
Prepaid assets and other	178	134
Intercompany receivable	5,453	5,038
Total current assets	6,130	5,907
PROPERTY AND EQUIPMENT, NET	7,232	7,014
OTHER ASSETS:
Intercompany receivable	0	0
Equity in affiliates	15,705	15,517
Deferred charges and other	105	97
Total assets	29,172	28,535
CURRENT LIABILITIES:
Accounts payable	371	371
Liabilities held for sale	0
Other current liabilities	699	653
Intercompany payable	0	0
Total current liabilities	1,070	1,024
LONG-TERM DEBT	8,032	8,247
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	12,876	12,152
Income taxes	(968)	(271)
Asset retirement obligation	355	257
Other	908	888
Total deferred credits and other noncurrent liabilities	13,171	13,026
COMMITMENTS AND CONTINGENCIES (Note 9)
APACHE SHAREHOLDERS’ EQUITY	6,899	6,238
Noncontrolling interest	0	0
TOTAL EQUITY	6,899	6,238
TOTAL LIABILITIES AND EQUITY	29,172	28,535
Apache Finance Canada [Member]
CURRENT ASSETS:
Cash and cash equivalents	246	0	0	0
Receivables, net of allowance	0	0
Inventories	0	0
Drilling advances	0	0
Assets held for sale	0
Prepaid assets and other	0	0
Intercompany receivable	0	0
Total current assets	246	0
PROPERTY AND EQUIPMENT, NET	0	0
OTHER ASSETS:
Intercompany receivable	0	0
Equity in affiliates	(1,252)	(1,240)
Deferred charges and other	1,000	1,000
Total assets	(6)	(240)
CURRENT LIABILITIES:
Accounts payable	0	(12)
Liabilities held for sale	0
Other current liabilities	4	3
Intercompany payable	247	0
Total current liabilities	251	(9)
LONG-TERM DEBT	297	297
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	0	0
Income taxes	5	5
Asset retirement obligation	0	0
Other	2	1
Total deferred credits and other noncurrent liabilities	7	6
COMMITMENTS AND CONTINGENCIES (Note 9)
APACHE SHAREHOLDERS’ EQUITY	(561)	(534)
Noncontrolling interest	0	0
TOTAL EQUITY	(561)	(534)
TOTAL LIABILITIES AND EQUITY	(6)	(240)
All Other Subsidiaries of Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	1,251	1,033	$ 1,049	$ 1,089
Receivables, net of allowance	715	770
Inventories	392	447
Drilling advances	94	77
Assets held for sale	1,231
Prepaid assets and other	41	45
Intercompany receivable	0	0
Total current assets	3,724	2,372
PROPERTY AND EQUIPMENT, NET	10,319	11,853
OTHER ASSETS:
Intercompany receivable	12,876	12,152
Equity in affiliates	691	706
Deferred charges and other	299	314
Total assets	27,909	27,397
CURRENT LIABILITIES:
Accounts payable	162	226
Liabilities held for sale	939
Other current liabilities	698	602
Intercompany payable	5,206	5,038
Total current liabilities	7,005	5,866
LONG-TERM DEBT	0	0
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	0	0
Income taxes	2,021	1,976
Asset retirement obligation	1,456	2,175
Other	356	422
Total deferred credits and other noncurrent liabilities	3,833	4,573
COMMITMENTS AND CONTINGENCIES (Note 9)
APACHE SHAREHOLDERS’ EQUITY	15,705	15,517
Noncontrolling interest	1,366	1,441
TOTAL EQUITY	17,071	16,958
TOTAL LIABILITIES AND EQUITY	$ 27,909	$ 27,397