Apache 10-Q 8 May 15 2015 Q1 Quarterly report Financial data

Document_and_Entity_Informatio

Document and Entity Information	3 Months Ended
	Mar. 31, 2015	Apr. 30, 2015
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	FALSE
Document Period End Date	31-Mar-15
Document Fiscal Year Focus	2015
Document Fiscal Period Focus	Q1
Trading Symbol	APA
Entity Registrant Name	APACHE CORP
Entity Central Index Key	6769
Current Fiscal Year End Date	-19
Entity Filer Category	Large Accelerated Filer
Entity Common Stock, Shares Outstanding		377,094,714

Statement_of_Consolidated_Oper

Statement of Consolidated Operations (Unaudited) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Oil and gas production revenues
Oil and gas production revenues	$1,806	$3,647
Other	12	28
Total revenues and other	1,818	3,675
Oil and gas property and equipment
Depreciation, depletion and amortization	8,407	1,206
Asset retirement obligation accretion	44	44
Lease operating expenses	538	597
Gathering and transportation	56	70
Taxes other than income	84	181
General and administrative	79	103
Acquisition, divestiture, and separation costs	54	18
Financing costs, net	46	27
Total operating expenses	9,308	2,246
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	-7,490	1,429
Current income tax provision	44	416
Deferred income tax provision (benefit)	-2,898	162
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	-4,636	851
Net income (loss) from discontinued operations, net of tax		-517
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	-4,636	334
Net income attributable to noncontrolling interest	15	98
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	-4,651	236
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON SHAREHOLDERS:
Net income (loss) from continuing operations attributable to common shareholders	-4,651	753
Net income (loss) from discontinued operations		-517
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	-4,651	236
BASIC NET INCOME (LOSS) PER COMMON SHARE:
Basic net income (loss) from continuing operations per share	($12.34)	$1.92
Basic net income (loss) from discontinued operations per share		($1.32)
Basic net income (loss) per share	($12.34)	$0.60
DILUTED NET INCOME (LOSS) PER COMMON SHARE:
Diluted net income (loss) from continuing operations per share	($12.34)	$1.90
Diluted net income (loss) from discontinued operations per share		($1.30)
Diluted net income (loss) per share	($12.34)	$0.60
WEIGHTED-AVERAGE NUMBER OF COMMON SHARES OUTSTANDING:
Basic	377	394
Diluted	377	396
DIVIDENDS DECLARED PER COMMON SHARE	$0.25	$0.25
Other Assets [Member]
Oil and gas property and equipment
Depreciation, depletion and amortization	98	97
Oil And Gas Property And Equipment Recurring [Member]
Oil and gas property and equipment
Depreciation, depletion and amortization	1,089	1,109
Oil And Gas Property And Equipment Additional [Member]
Oil and gas property and equipment
Depreciation, depletion and amortization	7,220
Oil Reserves [Member]
Oil and gas production revenues
Revenues	1,362	2,815
Natural Gas [Member]
Oil and gas production revenues
Revenues	387	646
Natural Gas Liquids [Member]
Oil and gas production revenues
Revenues	$57	$186

Statement_of_Consolidated_Comp

Statement of Consolidated Comprehensive Income (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Statement of Comprehensive Income [Abstract]
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	($4,636)	$334
Commodity cash flow hedge activity, net of tax:
Change in fair value of derivative instruments		-1
Commodity cash flow hedge activity, net of tax		-1
COMPREHENSIVE INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	-4,636	333
Comprehensive income attributable to noncontrolling interest	15	98
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	($4,651)	$235

Statement_of_Consolidated_Cash

Statement of Consolidated Cash Flows (Unaudited) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	($4,636)	$334
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Loss from discontinued operations		517
Depreciation, depletion and amortization	8,407	1,206
Asset retirement obligation accretion	44	44
Provision for (benefit from) deferred income taxes	-2,898	162
Other	-17	-41
Changes in operating assets and liabilities:
Receivables	257	389
Inventories	48	85
Drilling advances	-85	37
Deferred charges and other	-102	-74
Accounts payable	-199	-170
Accrued expenses	-199	-286
Deferred credits and noncurrent liabilities	30	8
NET CASH PROVIDED BY CONTINUING OPERATING ACTIVITIES	650	2,211
NET CASH PROVIDED BY DISCONTINUED OPERATIONS		82
NET CASH PROVIDED BY OPERATING ACTIVITIES	650	2,293
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	-1,768	-2,318
Leasehold and property acquisitions	-92	-44
Additions to gas gathering, transmission and processing facilities	-223	-344
Other, net	-35	9
NET CASH PROVIDED BY (USED IN) CONTINUING INVESTING ACTIVITIES	-2,118	-2,697
NET CASH PROVIDED BY DISCONTINUED OPERATIONS		748
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	-2,118	-1,949
CASH FLOWS FROM FINANCING ACTIVITIES:
Commercial paper and bank credit facilities, net	1,028	-2
Distributions to noncontrolling interest	-21
Dividends paid	-94	-79
Treasury stock activity, net		-484
Other	15
NET CASH PROVIDED BY (USED IN) CONTINUING FINANCING ACTIVITIES	928	-565
NET CASH USED IN DISCONTINUED OPERATIONS		-42
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	928	-607
NET DECREASE IN CASH AND CASH EQUIVALENTS	-540	-263
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	769	1,906
CASH AND CASH EQUIVALENTS AT END OF PERIOD	229	1,643
SUPPLEMENTARY CASH FLOW DATA:
Interest paid, net of capitalized interest	89	70
Income taxes paid, net of refunds	$142	$491

Consolidated_Balance_Sheet_Una

Consolidated Balance Sheet (Unaudited) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
CURRENT ASSETS:
Cash and cash equivalents	$229	$769
Receivables, net of allowance	1,767	2,024
Inventories	666	708
Drilling advances	468	388
Assets held for sale	1,804	1,628
Deferred tax asset	769	769
Prepaid assets and other	203	129
Total current assets	5,906	6,415
Oil and gas, on the basis of full-cost accounting:
Proved properties	91,634	89,852
Unproved properties and properties under development, not being amortized	6,753	7,014
Gathering, transmission and processing facilities	5,472	5,440
Other	1,161	1,152
Property and equipment, gross	105,020	103,458
Less: Accumulated depreciation, depletion and amortization	-63,790	-55,382
Property and equipment, net	41,230	48,076
OTHER ASSETS:
Goodwill	87	87
Deferred charges and other	1,427	1,374
Total assets	48,650	55,952
CURRENT LIABILITIES:
Accounts payable	1,010	1,210
Current debt	2,598
Current asset retirement obligation	47	37
Other current liabilities	1,838	2,417
Total current liabilities	5,493	3,664
LONG-TERM DEBT	9,675	11,245
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Income taxes	6,611	9,499
Asset retirement obligation	3,094	3,048
Other	372	359
Total deferred credits and other noncurrent liabilities	10,077	12,906
COMMITMENTS AND CONTINGENCIES (Note 7)
EQUITY:
Common stock, $0.625 par, 860,000,000 shares authorized, 410,110,362 and 409,706,347 shares issued, respectively	256	256
Paid-in capital	12,456	12,438
Retained earnings	11,504	16,249
Treasury stock, at cost, 33,192,567 and 33,201,455 shares, respectively	-2,889	-2,890
Accumulated other comprehensive loss	-116	-116
APACHE SHAREHOLDERS' EQUITY	21,211	25,937
Noncontrolling interest	2,194	2,200
TOTAL EQUITY	23,405	28,137
TOTAL LIABILITIES AND EQUITY	$48,650	$55,952

Consolidated_Balance_Sheet_Una1

Consolidated Balance Sheet (Unaudited) (Parenthetical) (USD $)	Mar. 31, 2015	Dec. 31, 2014
Statement of Financial Position [Abstract]
Common stock, par value	$0.63	$0.63
Common stock, shares authorized	860,000,000	860,000,000
Common stock, shares issued	410,110,362	409,706,347
Treasury stock, shares	33,192,567	33,201,455

Statement_of_Consolidated_Chan

Statement of Consolidated Changes in Equity (Unaudited) (USD $)	Total	Common Stock [Member]	Paid-In Capital [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Parent [Member]	Noncontrolling Interest [Member]
In Millions
BALANCE at Dec. 31, 2013	$35,393	$255	$12,251	$22,032	($1,027)	($115)	$33,396	$1,997
Net income (loss)	334			236			236	98
Commodity hedges, net of tax	-1					-1	-1
Common dividends ($0.25 per share)	-98			-98			-98
Common stock activity, net	33		33				33
Treasury stock activity, net	-484				-484		-484
BALANCE at Mar. 31, 2014	35,177	255	12,284	22,170	-1,511	-116	33,082	2,095
BALANCE at Dec. 31, 2014	28,137	256	12,438	16,249	-2,890	-116	25,937	2,200
Net income (loss)	-4,636			-4,651			-4,651	15
Distributions to noncontrolling interest	-21							-21
Common dividends ($0.25 per share)	-94			-94			-94
Common stock activity, net	18		18				18
Treasury stock activity, net	1				1		1
BALANCE at Mar. 31, 2015	$23,405	$256	$12,456	$11,504	($2,889)	($116)	$21,211	$2,194

Statement_of_Consolidated_Chan1

Statement of Consolidated Changes in Equity (Unaudited) (Parenthetical) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Common stock, dividends, per share	$0.25	$0.25
Retained Earnings [Member]
Common stock, dividends, per share	$0.25	$0.25
Parent [Member]
Common stock, dividends, per share	$0.25	$0.25

Summary_of_Significant_Account

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
	As of March 31, 2015, Apache’s significant accounting policies are consistent with those discussed in Note 1—Summary of Significant Accounting Policies to the consolidated financial statements contained in Apache’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014.
	Use of Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates with regard to these financial statements include the fair value determination of acquired assets and liabilities and assets held for sale, the estimate of proved oil and gas reserves and related present value estimates of future net cash flows therefrom, assessing asset retirement obligations, and the estimate of income taxes. Actual results could differ from those estimates.
	Oil and Gas Property
	The Company follows the full-cost method of accounting for its oil and gas property. Under this method of accounting, all costs incurred for both successful and unsuccessful exploration and development activities, including salaries, benefits and other internal costs directly identified with these activities, and oil and gas property acquisitions are capitalized. The net book value of oil and gas properties, less related deferred income taxes, may not exceed a calculated “ceiling.” The ceiling limitation is the estimated after-tax future net cash flows from proved oil and gas reserves, discounted at 10 percent per annum and adjusted for designated cash flow hedges. Estimated future net cash flows are calculated using end-of-period costs and an unweighted arithmetic average of commodity prices in effect on the first day of each of the previous 12 months, held flat for the life of the production, except where prices are defined by contractual arrangements. For a discussion of the calculation of estimated future net cash flows, please refer to Note 14—Supplemental Oil and Gas Disclosures to the consolidated financial statements contained in Apache’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014.
	Any excess of the net book value of proved oil and gas properties, less related deferred income taxes, over the ceiling is charged to expense and reflected as “Additional depreciation, depletion and amortization” (DD&A) in the accompanying statement of consolidated operations. Such limitations are imposed separately on a country-by-country basis and are tested quarterly. In the first quarter of 2015, the Company recorded $5.2 billion ($3.4 billion net of tax), $1.4 billion ($1.0 billion net of tax), and $632 million ($316 million net of tax) in non-cash write-downs of the carrying value of the Company’s U.S., Canada, and North Sea proved oil and gas properties, respectively.
	New Pronouncements Issued But Not Yet Adopted
	On April 7, 2015, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2015-03, which simplifies the presentation of debt issuance costs. The new standard requires debt issuance costs to be presented as a direct deduction from the carrying value of the associated debt liability, whereas they are currently being presented as a component of “deferred charges and other” on the balance sheet. The new standard creates consistency in the way debt issuance costs and debt discounts are presented on the balance sheet and better aligns U.S. GAAP with International Financial Reporting Standards (IFRS). ASU 2015-03 is effective for annual and interim reporting periods beginning after December 15, 2015. The Company will apply the change retrospectively and does not expect the adoption of this amendment to have a material impact on its consolidated financial statements.
	In May 2014, the FASB and the International Accounting Standards Board (IASB) issued a joint revenue recognition standard, ASU 2014-09. The new standard removes inconsistencies in existing standards, changes the way companies recognize revenue from contracts with customers, and increases disclosure requirements. The guidance requires companies to recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. ASU 2014-09 is effective for annual and interim periods beginning after December 15, 2016, pending a one-year deferral currently under consideration. The standard is required to be adopted using either the full retrospective approach, with all prior periods presented adjusted, or the modified retrospective approach, with a cumulative adjustment to retained earnings on the opening balance sheet. The Company is currently evaluating the level of effort needed to implement the standard, the impact of adopting this standard on its consolidated financial statements, and whether to use the full retrospective approach or the modified retrospective approach.

Acquisitions_and_Divestitures

Acquisitions and Divestitures	3 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Acquisitions and Divestitures	2. ACQUISITIONS AND DIVESTITURES
	2015 Activity
	LNG Projects Divestiture
	In April 2015, Apache completed the previously disclosed sale of its interest in two LNG projects, Wheatstone LNG in Australia and Kitimat LNG in Canada, along with the associated upstream oil and gas assets, to Woodside Petroleum Limited (Woodside). Total proceeds for the sale were $3.7 billion, which includes reimbursement of Apache’s net expenditure in the Wheatstone and Kitimat LNG projects, changes in working capital and other contractual adjustments between the effective date, July 1, 2014, and closing.
	As a result of the sale of these projects, the LNG facilities on Apache’s consolidated balance sheet and Apache’s investment in Pacific Trail Pipelines Limited Partnership qualify as held for sale as of March 31, 2015. A summary of the associated assets and liabilities classified as held for sale on our consolidated balance sheet as of March 31, 2015, and December 31, 2014, is detailed below:
			March 31, 2015							December 31, 2014
			Canada		Australia			Total		Canada		Australia		Total
			(In millions)
	ASSETS
	Current assets		$	15	$	—		$	15	$	30	$	—	$	30
	GTP assets			229		1,459			1,688		200		1,297		1,497
	Other long-term assets			101		—			101		101		—		101
	Assets held for sale(1)		$	345	$	1,459		$	1,804	$	331	$	1,297	$	1,628
	LIABILITIES
	Current liabilities		$	1	$	—		$	1	$	12	$	—	$	12
	Other long-term liabilities			6		—			6		7		—		7
	Liabilities held for sale(1)		$	7	$	—		$	7	$	19	$	—	$	19
	(1)	Assets held for sale are classified as current assets in the Consolidated Balance Sheet. Liabilities held for sale are recorded in “Other current liabilities” in the Consolidated Balance Sheet.
	In connection with classifying these assets to held for sale, a separate impairment analysis was performed for each long-lived asset within the disposal group. The analysis was based on the estimated fair value of the assets in the disposal group, which was equivalent to the allocated purchase price associated with the transaction. The transaction’s purchase price was allocated based on the fair value of each asset in the disposal group. Each asset’s fair value was determined using a combination of the income approach, specifically discounted cash flows, and the cost approach. The income approach considered management views on current operating measures as well as assumptions pertaining to market forces in the oil and gas industry, such as future production, future commodity prices, and costs. These assumptions were applied to develop future cash flow projections that were then discounted to estimate fair value, using a discount rate believed to be consistent with those used by principal market participants. The cost approach reflects the amount that would be required currently to replace the service capacity of an asset (often referred to as current replacement cost) and is typically used to measure the fair value of tangible assets that are used in combination with other assets. Apache has classified these non-recurring fair value measurements as Level 3 in the fair value hierarchy.
	In the fourth quarter of 2014, Apache recognized an impairment loss on held for sale assets totaling $1.0 billion ($753 million net of tax). As the sale and purchase agreements provide for Apache’s net expenditures incurred in connection with these projects subsequent to the effective date to be reimbursed by Woodside, the Company has recorded no further loss during the first quarter of 2015.
	The upstream oil and natural gas properties associated with this sale are not presented as held for sale pursuant to the rules governing full-cost accounting for oil and gas properties. Approximately $1.4 billion and $500 million of the sale proceeds have been allocated to the Australia and Canada upstream assets, respectively. Proceeds from the disposition of oil and gas properties are accounted for as a reduction to capitalized costs unless a significant portion (greater than 25 percent) of the Company’s reserve quantities in a particular country are sold, in which case a gain or loss is recognized in income. Upon closing the transaction in the second quarter of 2015, a loss of approximately $900 million ($600 million net of tax) will be recognized for the sale of the Australian upstream assets that represented approximately 50 percent of the region’s total reserves. Reserves divested in Canada were not a significant portion of the region total.
	Australia Divestiture
	On April 8, 2015, Apache Corporation announced an agreement to sell its Australian subsidiary Apache Energy Limited (AEL) to a consortium of private equity funds managed by Macquarie Capital Group Limited and Brookfield Asset Management Inc. for cash consideration of $2.1 billion. The Company estimates a loss of approximately $1 billion upon closing the transaction. The ultimate amount of loss will be determined by date of completion, impact of customary post-closing adjustments and finalization of various estimates. The transaction is expected to close mid-year 2015 and is subject to necessary government and regulatory approvals. The effective date of the sale is October 1, 2014.
	Upon closing, Apache will have exited essentially all of the Company’s Australian operations. The associated results of operations for Australia and the loss on disposals will be classified as discontinued operations for all periods presented in subsequent SEC filings.
	Leasehold Acquisitions
	During the first quarter of 2015, Apache completed $92 million of leasehold acquisitions primarily in our North America onshore regions.
	2014 Activity
	Anadarko Basin and Southern Louisiana Divestitures
	In December 2014, Apache completed the sale of certain Anadarko basin and non-core southern Louisiana oil and gas assets for approximately $1.3 billion in two separate transactions. In the Anadarko basin, Apache sold approximately 115,000 net acres in Wheeler County, Texas, and western Oklahoma. In southern Louisiana, Apache sold its working interest in approximately 90,000 net acres. The effective date of both of these transactions was October 1, 2014.
	Gulf of Mexico Divestiture
	On June 30, 2014, Apache completed the sale of non-operated interests in the Lucius and Heidelberg development projects and 11 primary-term deepwater exploration blocks in the Gulf of Mexico for $1.4 billion. The effective date of the transaction was May 1, 2014.
	Canada Divestiture
	On April 30, 2014, Apache completed the sale of producing oil and gas assets in the Deep Basin area of western Alberta and British Columbia, Canada, for $374 million. Apache sold primarily dry-gas producing properties comprising 328,400 net acres in the Ojay, Noel, and Wapiti areas. In the Wapiti area, Apache retained 100 percent of its working interest in horizons below the Cretaceous, including rights to the liquids-rich Montney and other deeper horizons. The effective date of the transaction was January 1, 2014.
	Argentina Divestiture
	On March 12, 2014, Apache’s subsidiaries completed the sale of all of the Company’s operations in Argentina to YPF Sociedad Anónima for cash consideration of $800 million plus the assumption of $52 million of bank debt as of June 30, 2013. The results of operations during 2014 related to Argentina have been classified as discontinued operations in this Quarterly Report on Form 10-Q. Sales and other operating revenues and the loss from discontinued operations related to the Argentina disposition were as follows:
			For the Quarter Ended
			March 31,
			2015		2014
			(In millions)
	Revenues and other from discontinued operations		$	—	$	87
	Loss from Argentina divestiture			—		(539	)
	Loss from operations in Argentina			—		(1	)
	Income tax benefit			—		23
	Loss from discontinued operations, net of tax		$	—	$	(517	)
	Leasehold Acquisitions
	During the first quarter of 2014, Apache completed $44 million of leasehold acquisitions primarily in our North America onshore regions.

Other_Current_Liabilities

Other Current Liabilities	3 Months Ended
	Mar. 31, 2015
Payables and Accruals [Abstract]
Other Current Liabilities	3. OTHER CURRENT LIABILITIES
	The following table provides detail of our other current liabilities:
		March 31,		December 31,
		2015		2014
		(In millions)
	Accrued operating expenses	$	137	$	163
	Accrued exploration and development		1,194		1,606
	Accrued compensation and benefits		127		204
	Accrued interest		118		160
	Accrued income taxes		27		54
	Other		235		230
	Total Other current liabilities	$	1,838	$	2,417

Asset_Retirement_Obligation

Asset Retirement Obligation	3 Months Ended
	Mar. 31, 2015
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation	4. ASSET RETIREMENT OBLIGATION
	The following table describes changes to the Company’s asset retirement obligation (ARO) liability for the three-month period ended March 31, 2015:
		(In millions)
	Asset retirement obligation at December 31, 2014	$	3,085
	Liabilities incurred		41
	Liabilities settled		(58	)
	Accretion expense		44
	Revisions in estimated liabilities		29
	Asset retirement obligation at March 31, 2015		3,141
	Less current portion		(47	)
	Asset retirement obligation, long-term	$	3,094

Debt_and_Financing_Costs

Debt and Financing Costs	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Debt and Financing Costs	5. DEBT AND FINANCING COSTS
	The following table presents the carrying amounts and estimated fair values of the Company’s outstanding debt:
		March 31, 2015						December 31, 2014
		Carrying			Fair			Carrying		Fair
		Amount			Value			Amount		Value
		(In millions)
	Uncommitted bank lines	$	21		$	21		$	—	$	—
	Commercial paper and committed bank facilities		2,577			2,577			1,570		1,570
	Notes and debentures		9,675			10,658			9,675		9,944
	Total Debt	$	12,273		$	13,256		$	11,245	$	11,514
	The Company’s debt is recorded at the carrying amount, net of unamortized discount, on its consolidated balance sheet. The carrying amount of the Company’s commercial paper, committed bank facilities and uncommitted bank lines, and overdraft lines approximates fair value because the interest rates are variable and reflective of market rates. Apache uses a market approach to determine the fair value of its notes and debentures using estimates provided by an independent investment financial data services firm (a Level 2 fair value measurement).
	As of March 31, 2015, the Company had unsecured committed revolving credit facilities totaling $5.3 billion, of which $2.0 billion matures in December 2015, $1.0 billion matures in August 2016, and $2.3 billion matures in June 2018. Apache has $2.0 billion, $1.7 billion, and $1.0 billion U.S. facilities, a $300 million Australian facility, and a $300 million Canadian facility. As of March 31, 2015, aggregate available borrowing capacity under the Company’s credit facilities was $2.7 billion. The Company’s committed bank facilities are used to support Apache’s commercial paper program.
	The Company has a $5.0 billion commercial paper program, which allows Apache to borrow funds for up to 270 days at competitive interest rates. As of March 31, 2015, the Company had $2.6 billion in current debt outstanding under commercial paper, committed bank facilities, and uncommitted bank lines. This amount was classified as current on Apache’s consolidated balance sheet based on an intent to repay the obligations with the proceeds from the LNG project divestitures. All current debt was repaid in April 2015 upon closing of those divestitures.
	Financing Costs, Net
	The following table presents the components of Apache’s financing costs, net:
		For the Quarter Ended
		March 31,
		2015			2014
		(In millions)
	Interest expense	$	128		$	124
	Amortization of deferred loan costs		2			2
	Capitalized interest		(80	)		(95	)
	Interest income		(4	)		(4	)
	Financing costs, net	$	46		$	27

Income_Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2015
Income Tax Disclosure [Abstract]
Income Taxes	6. INCOME TAXES
	The Company estimates its annual effective income tax rate in recording its quarterly provision for income taxes in the various jurisdictions in which the Company operates. Statutory tax rate changes and other significant or unusual items are recognized as discrete items in the quarter in which they occur. Accordingly, in the first quarter of 2015, the Company recorded the income tax effect of the $7.2 billion non-cash write-downs of its U.S., Canada, and North Sea proved oil and gas properties, respectively, offset by an increase in the Canadian valuation allowance, as discrete items.
	On March 26, 2015, U.K. Finance Bill 2015 received Royal Assent. Under the enacted legislation, the corporate income tax rate on North Sea oil and gas profits was reduced from 62 percent to 50 percent effective January 1, 2015. As a result of the enacted legislation in the first quarter of 2015, the Company recorded a deferred tax benefit of $619 million related to the remeasurement of the Company’s December 31, 2014 U.K. deferred income tax liability.
	Apache and its subsidiaries are subject to U.S. federal income tax as well as income or capital taxes in various state and foreign jurisdictions. The Company’s tax reserves are related to tax years that may be subject to examination by the relevant taxing authority. The Company is under audit in various states and in most of the Company’s foreign jurisdictions as part of its normal course of business.

Commitments_and_Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	7. COMMITMENTS AND CONTINGENCIES
	Legal Matters
	Apache is party to various legal actions arising in the ordinary course of business, including litigation and governmental and regulatory controls. As of March 31, 2015, the Company has an accrued liability of approximately $23 million for all legal contingencies that are deemed to be probable of occurring and can be reasonably estimated. Apache’s estimates are based on information known about the matters and its experience in contesting, litigating, and settling similar matters. Although actual amounts could differ from management’s estimate, none of the actions are believed by management to involve future amounts that would be material to Apache’s financial position, results of operations, or liquidity after consideration of recorded accruals. For material matters that Apache believes an unfavorable outcome is reasonably possible, the Company has disclosed the nature of the matter and a range of potential exposure, unless an estimate cannot be made at this time. It is management’s opinion that the loss for any other litigation matters and claims that are reasonably possible to occur will not have a material adverse effect on the Company’s financial position, results of operations, or liquidity.
	For additional information on each of the Legal Matters described below, please see Note 8—Commitments and Contingencies to the consolidated financial statements contained in Apache’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014.
	Argentine Environmental Claims and Argentina Tariff
	No material change in the status of the YPF Sociedad Anonima and Pioneer Natural Resources Company indemnities matters has occurred since the filing of Apache’s Annual Report on Form 10-K for its 2014 fiscal year.
	Louisiana Restoration
	As more fully described in Apache’s Annual Report on Form 10-K for its 2014 fiscal year, numerous surface owners have filed claims or sent demand letters to various oil and gas companies, including Apache, claiming that, under either expressed or implied lease terms or Louisiana law, they are liable for damage measured by the cost of restoration of leased premises to their original condition as well as damages for contamination and cleanup.
	In a case captioned State of Louisiana and the Cameron Parish School Board v. Apache Corporation et al., Docket No. 10-18672, in the 38th Judicial District Court, Parish of Cameron, State of Louisiana, plaintiffs allege that defendants’ oil and gas exploration and production activities contaminated plaintiffs’ property, and claim an unspecified amount of damages. Apache, a defendant in the case, acquired its interest in the oil and gas operations on plaintiffs’ property from the former operator, defendant Davis Oil Company, and subsequently sold the interest to defendant Wagner Oil Company (Wagner). Apache claims indemnity from Wagner. The case is set for trial in November 2015. While an adverse judgment against Apache might be possible, Apache intends to vigorously oppose the claims.
	No other material change in the status of these matters has occurred since the filing of Apache’s Annual Report on Form 10-K for its 2014 fiscal year.
	Australia Gas Pipeline Force Majeure
	In 2008, Company subsidiaries reported a pipeline explosion that interrupted deliveries of natural gas in Australia to customers under various long-term contracts. The civil lawsuits concerning the pipeline explosion, all of which were filed in the Supreme Court of Western Australia, have been resolved fully and dismissed on confidential terms, including for an exchange of consideration that is not material to Apache. The lawsuits are described in Apache’s Annual Report on Form 10-K dated February 27, 2015 for its 2014 fiscal year. On April 10, 2015, the court dismissed the lawsuits filed by plaintiffs Alcoa (Civ. 1481 of 2011), Barrick (Civ. 2656 of 2013), EDL LNG (Civ. 1751 of 2014), and Yara (Civ. 1742 of 2014). On April 9, 2015, plaintiffs Harvey (Civ. 1749 of 2014), Iluka (Civ. 1748 of 2014), Newmont (Civ. 1727 of 2014), and Wesfarmers (Civ. 1740 of 2014) discontinued their lawsuits, which were never served on the Apache defendants. All matters relating to the Australia gas pipeline force majeure are concluded.
	Apollo Exploration Lawsuit
	In a second amended petition filed on February 27, 2015 in a case captioned Apollo Exploration, LLC, Cogent Exploration, Ltd. Co. & SellmoCo, LLC v. Apache Corporation, Cause No. CV50538 in the 385th Judicial District Court, Midland County, Texas, plaintiffs allege damages in excess of $1.1 billion relating to certain purchase and sale agreements, mineral leases, and areas of mutual interest agreements concerning properties located in Hartley, Moore, Potter, and Oldham Counties, Texas. Apache believes the plaintiffs’ claims lack merit and will vigorously oppose them.
	Escheat Audits
	There has been no material change with respect to the review of the books and records of the Company and its subsidiaries and related entities by the State of Delaware, Department of Finance, Division of Revenue (Unclaimed Property), to determine compliance with the Delaware Escheat Laws, since the filing of Apache’s Annual Report on Form 10-K for its 2014 fiscal year.
	Burrup-Related Gas Supply Lawsuits
	In the lawsuit captioned Pankaj Oswal v. Apache Corporation, No. WAD 389/2013, in the Federal Court of Australia, District of Western Australia, General Division, on the eve of a trial that was to commence on February 9, 2015, plaintiff decided to discontinue his claim. On March 18, 2015, the court entered an order dismissing the case. The lawsuit is concluded in the Company’s favor.
	In the cases captioned Radhika Oswal v. Australia and New Zealand Banking Group Limited (ANZ) et al., No. SCI 2011 4653 and Pankaj Oswal v. Australia and New Zealand Banking Group Limited (ANZ) et al., No. SCI 2012 01995, in the Supreme Court of Victoria, the cross-vesting of certain related proceedings (in which neither the Company nor its subsidiaries are parties) has caused the court to consider new scheduling orders. The Company and its subsidiaries believe the plaintiffs’ claims lack merit and will vigorously oppose them. No other material change in the status of this matter has occurred since the filing of Apache’s Annual Report on Form 10-K for its 2014 fiscal year.
	Environmental Matters
	As of March 31, 2015, the Company had an undiscounted reserve for environmental remediation of approximately $63 million. The Company is not aware of any environmental claims existing as of March 31, 2015 that have not been provided for or would otherwise have a material impact on its financial position, results of operations, or liquidity. There can be no assurance, however, that current regulatory requirements will not change or past non-compliance with environmental laws will not be discovered on the Company’s properties.
	No other material change in the status of these matters has occurred since the filing of Apache’s Annual Report on Form 10-K for its 2014 fiscal year.

Capital_Stock

Capital Stock	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Capital Stock	8. CAPITAL STOCK
	Net Income (Loss) per Common Share
	A reconciliation of the components of basic and diluted net income (loss) per common share for the quarters ended March 31, 2015 and 2014 is presented in the table below.
		For the Quarter Ended March 31,
		2015								2014
		Income			Shares		Per Share			Income			Shares		Per Share
		(In millions, except per share amounts)
	Basic:
	Income (loss) from continuing operations	$	(4,651	)		377	$	(12.34	)	$	753			394	$	1.92
	Loss from discontinued operations		—			377		—			(517	)		394		(1.32	)
	Income (loss) attributable to common stock	$	(4,651	)		377	$	(12.34	)	$	236			394	$	0.6
	Effect of Dilutive Securities:
	Stock options and other	$	—			—				$	—			2
	Diluted:
	Income (loss) from continuing operations	$	(4,651	)		377	$	(12.34	)	$	753			396	$	1.9
	Loss from discontinued operations		—			377		—			(517	)		396		(1.30	)
	Income (loss) attributable to common stock	$	(4,651	)		377	$	(12.34	)	$	236			396	$	0.6
	The diluted earnings per share calculation excludes options and restricted stock units that were anti-dilutive totaling 9.1 million and 5.8 million for the quarters ending March 31, 2015 and 2014, respectively.
	Common Stock Dividends
	For the quarters ended March 31, 2015 and 2014, Apache paid $94 million and $79 million, respectively, in dividends on its common stock.
	Stock Repurchase Program
	Apache’s Board of Directors has authorized the purchase of up to 40 million shares of the Company’s common stock. Shares may be purchased either in the open market or through privately held negotiated transactions. The Company initiated the buyback program on June 10, 2013, and through December 31, 2014, had repurchased a total of 32.2 million shares at an average price of $88.96 per share. The Company has not purchased any additional shares during 2015, and is not obligated to acquire any specific number of shares.

Business_Segment_Information

Business Segment Information	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Business Segment Information	9. BUSINESS SEGMENT INFORMATION
	Apache is engaged in a single line of business. Both domestically and internationally, the Company explores for, develops, and produces natural gas, crude oil and natural gas liquids. At March 31, 2015, the Company had production in five countries: the United States, Canada, Egypt, Australia, and the United Kingdom (U.K.) North Sea. Apache also pursues exploration interests in other countries that may, over time, result in reportable discoveries and development opportunities. Financial information for each country is presented below:
			United			Canada			Egypt (1)		Australia			North Sea			Other		Total
			States														International
			(In millions)
	For the Quarter Ended March 31, 2015
	Oil and Gas Production Revenues		$	660		$	133		$	532	$	168		$	313		$	—	$	1,806
	Operating Income (Loss)(2)		$	(5,320	)	$	(1,430	)	$	102	$	(12	)	$	(663	)	$	—	$	(7,323	)
	Other Income (Expense):
	Other																			12
	General and administrative																			(79	)
	Acquisition, divestiture, and separation costs																			(54	)
	Financing costs, net																			(46	)
	Net Loss From Continuing Operations
	Before Income Taxes																		$	(7,490	)
	Total Assets		$	21,577		$	5,288		$	7,247	$	9,044		$	5,376		$	118	$	48,650
	For the Quarter Ended March 31, 2014
	Oil and Gas Production Revenues		$	1,505		$	318		$	950	$	256		$	618		$	—	$	3,647
	Operating Income(2)		$	663		$	71		$	536	$	96		$	183		$	—	$	1,549
	Other Income (Expense):
	Other																			28
	General and administrative																			(103	)
	Acquisition, divestiture, and separation costs																			(18	)
	Financing costs, net																			(27	)
	Net Income From Continuing Operations
	Before Income Taxes																		$	1,429
	Total Assets		$	30,618		$	7,102		$	7,350	$	8,403		$	7,599		$	49	$	61,121
	(1)	Includes a noncontrolling interest in Egypt.
	(2)	Operating Income (Loss) consists of oil and gas production revenues less depreciation, depletion and amortization, asset retirement obligation accretion, lease operating expenses, gathering and transportation costs, and taxes other than income. The first quarter 2015 operating income (loss) of U.S., Canada, and North Sea includes $5.2 billion, $1.4 billion, and $632 million, respectively, in non-cash write-downs of each region’s carrying value of oil and gas properties.

Supplemental_Guarantor_Informa

Supplemental Guarantor Information	3 Months Ended
	Mar. 31, 2015
Guarantees [Abstract]
Supplemental Guarantor Information	10. SUPPLEMENTAL GUARANTOR INFORMATION
	In December 1999, Apache Finance Canada issued approximately $300 million of publicly-traded notes due in 2029. The notes are fully and unconditionally guaranteed by Apache. The following condensed consolidating financial statements are provided as an alternative to filing separate financial statements.
	Apache Finance Canada is 100 percent owned by Apache Corporation. As such, these condensed consolidating financial statements should be read in conjunction with Apache’s consolidated financial statements and the notes thereto, of which this note is an integral part.
	APACHE CORPORATION AND SUBSIDIARIES
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For the Quarter Ended March 31, 2015
									All Other
						Apache			Subsidiaries
			Apache			Finance			of Apache			Reclassifications
			Corporation			Canada			Corporation			& Eliminations			Consolidated
			(In millions)
	REVENUES AND OTHER:
	Oil and gas production revenues		$	365		$	—		$	1,441		$	—		$	1,806
	Equity in net income (loss) of affiliates			(1,085	)		(654	)		1			1,738			—
	Other			(40	)		14			38			—			12
				(760	)		(640	)		1,480			1,738			1,818
	OPERATING EXPENSES:
	Depreciation, depletion and amortization			5,499			—			2,908			—			8,407
	Asset retirement obligation accretion			4			—			40			—			44
	Lease operating expenses			124			—			414			—			538
	Gathering and transportation			9			—			47			—			56
	Taxes other than income			34			—			50			—			84
	General and administrative			64			—			15			—			79
	Acquisition, divestiture, and separation costs			54			—			—			—			54
	Financing costs, net			52			10			(16	)		—			46
				5,840			10			3,458			—			9,308
	NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			(6,600	)		(650	)		(1,978	)		1,738			(7,490	)
	Provision (benefit) for income taxes			(1,949	)		3			(908	)		—			(2,854	)
	NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST			(4,651	)		(653	)		(1,070	)		1,738			(4,636	)
	Net income (loss) from discontinued operations, net of tax			—			—			—			—			—
	NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST			(4,651	)		(653	)		(1,070	)		1,738			(4,636	)
	Net income attributable to noncontrolling interest			—			—			15			—			15
	NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK		$	(4,651	)	$	(653	)	$	(1,085	)	$	1,738		$	(4,651	)
	COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK (1)		$	(4,651	)	$	(653	)	$	(1,085	)	$	1,738		$	(4,651	)
	(1)	Comprehensive income (loss) activity is recorded on the Apache Corporation entity and consists of derivative instrument reclassifications and changes in fair value as reflected on our Statement of Consolidated Comprehensive Income.
									All Other
						Apache			Subsidiaries
			Apache			Finance			of Apache			Reclassifications
			Corporation			Canada			Corporation			& Eliminations			Consolidated
			(In millions)
	REVENUES AND OTHER:
	Oil and gas production revenues		$	892		$	—		$	2,755		$	—		$	3,647
	Equity in net income (loss) of affiliates			253			29			(6	)		(276	)		—
	Other			(23	)		14			38			(1	)		28
				1,122			43			2,787			(277	)		3,675
	OPERATING EXPENSES:
	Depreciation, depletion and amortization			328			—			878			—			1,206
	Asset retirement obligation accretion			7			—			37			—			44
	Lease operating expenses			128			—			469			—			597
	Gathering and transportation			14			—			56			—			70
	Taxes other than income			79			—			102			—			181
	General and administrative			91			—			13			(1	)		103
	Acquisition, divestiture, and separation costs			18			—			—			—			18
	Financing costs, net			32			10			(15	)		—			27
				697			10			1,540			(1	)		2,246
	NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			425			33			1,247			(276	)		1,429
	Provision for income taxes			62			10			506			—			578
	NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST			363			23			741			(276	)		851
	Net loss from discontinued operations, net of tax			(127	)		—			(390	)		—			(517	)
	NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST			236			23			351			(276	)		334
	Net income attributable to noncontrolling interest			—			—			98			—			98
	NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK		$	236		$	23		$	253		$	(276	)	$	236
	COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK (1)		$	235		$	23		$	253		$	(276	)	$	235
	(1)	Comprehensive income (loss) activity is recorded on the Apache Corporation entity and consists of derivative instrument reclassifications and changes in fair value as reflected on our Statement of Consolidated Comprehensive Income.
APACHE CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
For the Quarter Ended March 31, 2015
								All Other
					Apache			Subsidiaries
		Apache			Finance			of Apache			Reclassifications
		Corporation			Canada			Corporation			& Eliminations			Consolidated
		(In millions)
CASH PROVIDED BY (USED IN) CONTINUING OPERATING ACTIVITIES		$	(396	)	$	(3	)	$	1,049		$	—		$	650
CASH PROVIDED BY DISCONTINUED OPERATIONS			—			—			—			—			—
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES			(396	)		(3	)		1,049			—			650
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property			(771	)		—			(997	)		—			(1,768	)
Leasehold and property acquisition			(92	)		—			—			—			(92	)
Additions to gas gathering, transmission and processing facilities			(22	)		—			(201	)		—			(223	)
Investment in subsidiaries, net			105			—			—			(105	)		—
Other			(18	)		—			(17	)		—			(35	)
NET CASH PROVIDED BY (USED IN) CONTINUING INVESTING ACTIVITIES			(798	)		—			(1,215	)		(105	)		(2,118	)
NET CASH PROVIDED BY DISCONTINUED OPERATIONS			—			—			—			—			—
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES			(798	)		—			(1,215	)		(105	)		(2,118	)
CASH FLOWS FROM FINANCING ACTIVITIES:
Commercial paper and bank credit facilities, net			1,028			—			—			—			1,028
Intercompany borrowings			—			(1	)		(104	)		105			—
Distributions to noncontrolling interest			—			—			(21	)		—			(21	)
Dividends paid			(94	)		—			—			—			(94	)
Common stock activity			—			4			(4	)		—			—
Other			2			—			13			—			15
NET CASH PROVIDED BY (USED IN) CONTINUING FINANCING ACTIVITIES			936			3			(116	)		105			928
NET CASH USED IN DISCONTINUED OPERATIONS			—			—			—			—			—
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES			936			3			(116	)		105			928
NET DECREASE IN CASH AND CASH EQUIVALENTS			(258	)		—			(282	)		—			(540	)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR			267			—			502			—			769
CASH AND CASH EQUIVALENTS AT END OF PERIOD		$	9		$	—		$	220		$	—		$	229
CASH PROVIDED BY (USED IN) CONTINUING OPERATING ACTIVITIES		$	(186	)	$	(15	)	$	2,412		$	—		$	2,211
CASH PROVIDED BY DISCONTINUED OPERATIONS			—			—			82			—			82
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES			(186	)		(15	)		2,494			—			2,293
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property			(704	)		—			(1,614	)		—			(2,318	)
Leasehold and property acquisitions			(36	)		—			(8	)		—			(44	)
Additions to gas gathering, transmission and processing facilities			(19	)		—			(325	)		—			(344	)
Investment in subsidiaries, net			1,320			—			—			(1,320	)		—
Other			(7	)		—			16			—			9
NET CASH PROVIDED BY (USED IN) CONTINUING INVESTING ACTIVITIES			554			—			(1,931	)		(1,320	)		(2,697	)
NET CASH PROVIDED BY DISCONTINUED OPERATIONS			—			—			748			—			748
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES			554			—			(1,183	)		(1,320	)		(1,949	)
CASH FLOWS FROM FINANCING ACTIVITIES:
Commercial paper and bank credit facilities, net			42			—			(44	)		—			(2	)
Intercompany borrowings			—			10			(1,329	)		1,319			—
Dividends paid			(79	)		—			—			—			(79	)
Payments on fixed rate debt			(484	)		—			—			—			(484	)
Other common stock activity, net			—			5			(6	)		1			—
NET CASH PROVIDED BY (USED IN) CONTINUING FINANCING ACTIVITIES			(521	)		15			(1,379	)		1,320			(565	)
NET CASH USED IN DISCONTINUED OPERATIONS			—			—			(42	)		—			(42	)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES			(521	)		15			(1,421	)		1,320			(607	)
NET DECREASE IN CASH AND CASH EQUIVALENTS			(153	)		—			(110	)		—			(263	)
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR			155			3			1,748			—			1,906
CASH AND CASH EQUIVALENTS AT END OF PERIOD		$	2		$	3		$	1,638		$	—		$	1,643
APACHE CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATING BALANCE SHEET
March 31, 2015
								All Other
					Apache			Subsidiaries
		Apache			Finance			of Apache			Reclassifications
		Corporation			Canada			Corporation			& Eliminations			Consolidated
		(In millions)
ASSETS
CURRENT ASSETS:
Cash and cash equivalents		$	9		$	—		$	220		$	—		$	229
Receivables, net of allowance			512			—			1,255			—			1,767
Inventories			53			—			613			—			666
Drilling advances			20			—			448			—			468
Assets held for sale			—			—			1,804			—			1,804
Deferred tax asset			612			—			157			—			769
Prepaid assets and other			114			—			89			—			203
Intercompany receivable			5,250			—			—			(5,250	)		—
			6,570			—			4,586			(5,250	)		5,906
PROPERTY AND EQUIPMENT, NET			9,127			—			32,103			—			41,230
OTHER ASSETS:
Intercompany receivable			—			—			713			(713	)		—
Equity in affiliates			24,707			213			437			(25,357	)		—
Goodwill			—			—			87			—			87
Deferred charges and other			173			1,001			1,253			(1,000	)		1,427
		$	40,577		$	1,214		$	39,179		$	(32,320	)	$	48,650
LIABILITIES AND SHAREHOLDERS’ EQUITY
CURRENT LIABILITIES:
Accounts payable		$	564		$	9		$	437		$	—		$	1,010
Current debt			2,598			—			—			—			2,598
Asset retirement obligation			28			—			19			—			47
Other current liabilities			663			7			1,168			—			1,838
Intercompany payable			—			—			5,250			(5,250	)		—
			3,853			16			6,874			(5,250	)		5,493
LONG-TERM DEBT			9,377			298			—			—			9,675
DEFERRED CREDITS AND OTHER
NONCURRENT LIABILITIES:
Intercompany payable			713			—			—			(713	)		—
Income taxes			3,220			—			3,391			—			6,611
Asset retirement obligation			216			—			2,878			—			3,094
Other			1,987			250			(865	)		(1,000	)		372
			6,136			250			5,404			(1,713	)		10,077
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS’ EQUITY			21,211			650			24,707			(25,357	)		21,211
Noncontrolling interest			—			—			2,194			—			2,194
TOTAL EQUITY			21,211			650			26,901			(25,357	)		23,405
		$	40,577		$	1,214		$	39,179		$	(32,320	)	$	48,650
APACHE CORPORATION AND SUBSIDIARIES
CONDENSED CONSOLIDATING BALANCE SHEET
31-Dec-14
								All Other
					Apache			Subsidiaries
		Apache			Finance			of Apache			Reclassifications
		Corporation			Canada			Corporation			& Eliminations			Consolidated
		(In millions)
ASSETS
CURRENT ASSETS:
Cash and cash equivalents		$	267		$	—		$	502		$	—		$	769
Receivables, net of allowance			837			—			1,187			—			2,024
Inventories			24			—			684			—			708
Drilling advances			34			1			353			—			388
Assets held for sale			—			—			1,628			—			1,628
Deferred tax asset			612			—			157			—			769
Prepaid assets and other			32			—			97			—			129
Intercompany receivable			4,939			—			—			(4,939	)		—
			6,745			1			4,608			(4,939	)		6,415
PROPERTY AND EQUIPMENT, NET			13,940			—			34,136			—			48,076
OTHER ASSETS:
Intercompany receivable			—			—			608			(608	)		—
Equity in affiliates			25,791			869			444			(27,104	)		—
Goodwill			—			—			87			—			87
Deferred charges and other			175			1,002			1,197			(1,000	)		1,374
		$	46,651		$	1,872		$	41,080		$	(33,651	)	$	55,952
LIABILITIES AND SHAREHOLDERS’ EQUITY
CURRENT LIABILITIES:
Accounts payable		$	748		$	10		$	452		$	—		$	1,210
Asset retirement obligation			28			—			9			—			37
Other current liabilities			1,014			1			1,402			—			2,417
Intercompany payable			—			—			4,939			(4,939	)		—
			1,790			11			6,802			(4,939	)		3,664
LONG-TERM DEBT			10,947			298			—			—			11,245
DEFERRED CREDITS AND OTHER
NONCURRENT LIABILITIES:
Intercompany payable			608			—			—			(608	)		—
Income taxes			5,076			—			4,423			—			9,499
Asset retirement obligation			211			—			2,837			—			3,048
Other			2,082			250			(973	)		(1,000	)		359
			7,977			250			6,287			(1,608	)		12,906
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS’ EQUITY			25,937			1,313			25,791			(27,104	)		25,937
Noncontrolling interest			—			—			2,200			—			2,200
TOTAL EQUITY			25,937			1,313			27,991			(27,104	)		28,137
		$	46,651		$	1,872		$	41,080		$	(33,651	)	$	55,952

Summary_of_Significant_Account1

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2015
Accounting Policies [Abstract]
Use of Estimates	Use of Estimates
	The preparation of financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates with regard to these financial statements include the fair value determination of acquired assets and liabilities and assets held for sale, the estimate of proved oil and gas reserves and related present value estimates of future net cash flows therefrom, assessing asset retirement obligations, and the estimate of income taxes. Actual results could differ from those estimates.
Oil and Gas Property	Oil and Gas Property
	The Company follows the full-cost method of accounting for its oil and gas property. Under this method of accounting, all costs incurred for both successful and unsuccessful exploration and development activities, including salaries, benefits and other internal costs directly identified with these activities, and oil and gas property acquisitions are capitalized. The net book value of oil and gas properties, less related deferred income taxes, may not exceed a calculated “ceiling.” The ceiling limitation is the estimated after-tax future net cash flows from proved oil and gas reserves, discounted at 10 percent per annum and adjusted for designated cash flow hedges. Estimated future net cash flows are calculated using end-of-period costs and an unweighted arithmetic average of commodity prices in effect on the first day of each of the previous 12 months, held flat for the life of the production, except where prices are defined by contractual arrangements. For a discussion of the calculation of estimated future net cash flows, please refer to Note 14—Supplemental Oil and Gas Disclosures to the consolidated financial statements contained in Apache’s Annual Report on Form 10-K for the fiscal year ended December 31, 2014.
	Any excess of the net book value of proved oil and gas properties, less related deferred income taxes, over the ceiling is charged to expense and reflected as “Additional depreciation, depletion and amortization” (DD&A) in the accompanying statement of consolidated operations. Such limitations are imposed separately on a country-by-country basis and are tested quarterly. In the first quarter of 2015, the Company recorded $5.2 billion ($3.4 billion net of tax), $1.4 billion ($1.0 billion net of tax), and $632 million ($316 million net of tax) in non-cash write-downs of the carrying value of the Company’s U.S., Canada, and North Sea proved oil and gas properties, respectively.
New Pronouncements Issued But Not Yet Adopted	New Pronouncements Issued But Not Yet Adopted
	On April 7, 2015, the Financial Accounting Standards Board (FASB) issued Accounting Standards Update (ASU) 2015-03, which simplifies the presentation of debt issuance costs. The new standard requires debt issuance costs to be presented as a direct deduction from the carrying value of the associated debt liability, whereas they are currently being presented as a component of “deferred charges and other” on the balance sheet. The new standard creates consistency in the way debt issuance costs and debt discounts are presented on the balance sheet and better aligns U.S. GAAP with International Financial Reporting Standards (IFRS). ASU 2015-03 is effective for annual and interim reporting periods beginning after December 15, 2015. The Company will apply the change retrospectively and does not expect the adoption of this amendment to have a material impact on its consolidated financial statements.
	In May 2014, the FASB and the International Accounting Standards Board (IASB) issued a joint revenue recognition standard, ASU 2014-09. The new standard removes inconsistencies in existing standards, changes the way companies recognize revenue from contracts with customers, and increases disclosure requirements. The guidance requires companies to recognize revenue to depict the transfer of goods or services to customers in amounts that reflect the consideration to which the company expects to be entitled in exchange for those goods or services. ASU 2014-09 is effective for annual and interim periods beginning after December 15, 2016, pending a one-year deferral currently under consideration. The standard is required to be adopted using either the full retrospective approach, with all prior periods presented adjusted, or the modified retrospective approach, with a cumulative adjustment to retained earnings on the opening balance sheet. The Company is currently evaluating the level of effort needed to implement the standard, the impact of adopting this standard on its consolidated financial statements, and whether to use the full retrospective approach or the modified retrospective approach.
Disposition of Properties	Proceeds from the disposition of oil and gas properties are accounted for as a reduction to capitalized costs unless a significant portion (greater than 25 percent) of the Company’s reserve quantities in a particular country are sold, in which case a gain or loss is recognized in income.

Acquisitions_and_Divestitures_

Acquisitions and Divestitures (Tables)	3 Months Ended
	Mar. 31, 2015
Business Combinations [Abstract]
Summary of Associated Assets and Liabilities Classified as Held for Sale	A summary of the associated assets and liabilities classified as held for sale on our consolidated balance sheet as of March 31, 2015, and December 31, 2014, is detailed below:
			March 31, 2015							December 31, 2014
			Canada		Australia			Total		Canada		Australia		Total
			(In millions)
	ASSETS
	Current assets		$	15	$	—		$	15	$	30	$	—	$	30
	GTP assets			229		1,459			1,688		200		1,297		1,497
	Other long-term assets			101		—			101		101		—		101
	Assets held for sale(1)		$	345	$	1,459		$	1,804	$	331	$	1,297	$	1,628
	LIABILITIES
	Current liabilities		$	1	$	—		$	1	$	12	$	—	$	12
	Other long-term liabilities			6		—			6		7		—		7
	Liabilities held for sale(1)		$	7	$	—		$	7	$	19	$	—	$	19
	(1)	Assets held for sale are classified as current assets in the Consolidated Balance Sheet. Liabilities held for sale are recorded in “Other current liabilities” in the Consolidated Balance Sheet.
Summary of Sales and Other Operating Revenue and Loss from Discontinued Operation Related to Disposition	Sales and other operating revenues and the loss from discontinued operations related to the Argentina disposition were as follows:
			For the Quarter Ended
			March 31,
			2015		2014
			(In millions)
	Revenues and other from discontinued operations		$	—	$	87
	Loss from Argentina divestiture			—		(539	)
	Loss from operations in Argentina			—		(1	)
	Income tax benefit			—		23
	Loss from discontinued operations, net of tax		$	—	$	(517	)

Other_Current_Liabilities_Tabl

Other Current Liabilities (Tables)	3 Months Ended
	Mar. 31, 2015
Payables and Accruals [Abstract]
Detail of Other Current Liabilities	The following table provides detail of our other current liabilities:
		March 31,		December 31,
		2015		2014
		(In millions)
	Accrued operating expenses	$	137	$	163
	Accrued exploration and development		1,194		1,606
	Accrued compensation and benefits		127		204
	Accrued interest		118		160
	Accrued income taxes		27		54
	Other		235		230
	Total Other current liabilities	$	1,838	$	2,417

Asset_Retirement_Obligation_Ta

Asset Retirement Obligation (Tables)	3 Months Ended
	Mar. 31, 2015
Asset Retirement Obligation Disclosure [Abstract]
Asset Retirement Obligation	The following table describes changes to the Company’s asset retirement obligation (ARO) liability for the three-month period ended March 31, 2015:
		(In millions)
	Asset retirement obligation at December 31, 2014	$	3,085
	Liabilities incurred		41
	Liabilities settled		(58	)
	Accretion expense		44
	Revisions in estimated liabilities		29
	Asset retirement obligation at March 31, 2015		3,141
	Less current portion		(47	)
	Asset retirement obligation, long-term	$	3,094

Debt_and_Financing_Costs_Table

Debt and Financing Costs (Tables)	3 Months Ended
	Mar. 31, 2015
Debt Disclosure [Abstract]
Summary of Carrying Amounts and Estimated Fair Values	The following table presents the carrying amounts and estimated fair values of the Company’s outstanding debt:
		March 31, 2015						December 31, 2014
		Carrying			Fair			Carrying		Fair
		Amount			Value			Amount		Value
		(In millions)
	Uncommitted bank lines	$	21		$	21		$	—	$	—
	Commercial paper and committed bank facilities		2,577			2,577			1,570		1,570
	Notes and debentures		9,675			10,658			9,675		9,944
	Total Debt	$	12,273		$	13,256		$	11,245	$	11,514
Components of Financing Costs, Net	Financing Costs, Net
	The following table presents the components of Apache’s financing costs, net:
		For the Quarter Ended
		March 31,
		2015			2014
		(In millions)
	Interest expense	$	128		$	124
	Amortization of deferred loan costs		2			2
	Capitalized interest		(80	)		(95	)
	Interest income		(4	)		(4	)
	Financing costs, net	$	46		$	27

Capital_Stock_Tables

Capital Stock (Tables)	3 Months Ended
	Mar. 31, 2015
Equity [Abstract]
Net Income (loss) Per Common Share	A reconciliation of the components of basic and diluted net income (loss) per common share for the quarters ended March 31, 2015 and 2014 is presented in the table below.
		For the Quarter Ended March 31,
		2015								2014
		Income			Shares		Per Share			Income			Shares		Per Share
		(In millions, except per share amounts)
	Basic:
	Income (loss) from continuing operations	$	(4,651	)		377	$	(12.34	)	$	753			394	$	1.92
	Loss from discontinued operations		—			377		—			(517	)		394		(1.32	)
	Income (loss) attributable to common stock	$	(4,651	)		377	$	(12.34	)	$	236			394	$	0.6
	Effect of Dilutive Securities:
	Stock options and other	$	—			—				$	—			2
	Diluted:
	Income (loss) from continuing operations	$	(4,651	)		377	$	(12.34	)	$	753			396	$	1.9
	Loss from discontinued operations		—			377		—			(517	)		396		(1.30	)
	Income (loss) attributable to common stock	$	(4,651	)		377	$	(12.34	)	$	236			396	$	0.6

Business_Segment_Information_T

Business Segment Information (Tables)	3 Months Ended
	Mar. 31, 2015
Segment Reporting [Abstract]
Financial Segment Information	Financial information for each country is presented below:
			United			Canada			Egypt (1)		Australia			North Sea			Other		Total
			States														International
			(In millions)
	For the Quarter Ended March 31, 2015
	Oil and Gas Production Revenues		$	660		$	133		$	532	$	168		$	313		$	—	$	1,806
	Operating Income (Loss)(2)		$	(5,320	)	$	(1,430	)	$	102	$	(12	)	$	(663	)	$	—	$	(7,323	)
	Other Income (Expense):
	Other																			12
	General and administrative																			(79	)
	Acquisition, divestiture, and separation costs																			(54	)
	Financing costs, net																			(46	)
	Net Loss From Continuing Operations
	Before Income Taxes																		$	(7,490	)
	Total Assets		$	21,577		$	5,288		$	7,247	$	9,044		$	5,376		$	118	$	48,650
	For the Quarter Ended March 31, 2014
	Oil and Gas Production Revenues		$	1,505		$	318		$	950	$	256		$	618		$	—	$	3,647
	Operating Income(2)		$	663		$	71		$	536	$	96		$	183		$	—	$	1,549
	Other Income (Expense):
	Other																			28
	General and administrative																			(103	)
	Acquisition, divestiture, and separation costs																			(18	)
	Financing costs, net																			(27	)
	Net Income From Continuing Operations
	Before Income Taxes																		$	1,429
	Total Assets		$	30,618		$	7,102		$	7,350	$	8,403		$	7,599		$	49	$	61,121
	(1)	Includes a noncontrolling interest in Egypt.
	(2)	Operating Income (Loss) consists of oil and gas production revenues less depreciation, depletion and amortization, asset retirement obligation accretion, lease operating expenses, gathering and transportation costs, and taxes other than income. The first quarter 2015 operating income (loss) of U.S., Canada, and North Sea includes $5.2 billion, $1.4 billion, and $632 million, respectively, in non-cash write-downs of each region’s carrying value of oil and gas properties.

Supplemental_Guarantor_Informa1

Supplemental Guarantor Information (Tables)	3 Months Ended
	Mar. 31, 2015
Guarantees [Abstract]
Supplemental Condensed Consolidating Statement of Operations	APACHE CORPORATION AND SUBSIDIARIES
	CONDENSED CONSOLIDATING STATEMENT OF OPERATIONS
	For the Quarter Ended March 31, 2015
									All Other
						Apache			Subsidiaries
			Apache			Finance			of Apache			Reclassifications
			Corporation			Canada			Corporation			& Eliminations			Consolidated
			(In millions)
	REVENUES AND OTHER:
	Oil and gas production revenues		$	365		$	—		$	1,441		$	—		$	1,806
	Equity in net income (loss) of affiliates			(1,085	)		(654	)		1			1,738			—
	Other			(40	)		14			38			—			12
				(760	)		(640	)		1,480			1,738			1,818
	OPERATING EXPENSES:
	Depreciation, depletion and amortization			5,499			—			2,908			—			8,407
	Asset retirement obligation accretion			4			—			40			—			44
	Lease operating expenses			124			—			414			—			538
	Gathering and transportation			9			—			47			—			56
	Taxes other than income			34			—			50			—			84
	General and administrative			64			—			15			—			79
	Acquisition, divestiture, and separation costs			54			—			—			—			54
	Financing costs, net			52			10			(16	)		—			46
				5,840			10			3,458			—			9,308
	NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			(6,600	)		(650	)		(1,978	)		1,738			(7,490	)
	Provision (benefit) for income taxes			(1,949	)		3			(908	)		—			(2,854	)
	NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST			(4,651	)		(653	)		(1,070	)		1,738			(4,636	)
	Net income (loss) from discontinued operations, net of tax			—			—			—			—			—
	NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST			(4,651	)		(653	)		(1,070	)		1,738			(4,636	)
	Net income attributable to noncontrolling interest			—			—			15			—			15
	NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK		$	(4,651	)	$	(653	)	$	(1,085	)	$	1,738		$	(4,651	)
	COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK (1)		$	(4,651	)	$	(653	)	$	(1,085	)	$	1,738		$	(4,651	)
	(1)	Comprehensive income (loss) activity is recorded on the Apache Corporation entity and consists of derivative instrument reclassifications and changes in fair value as reflected on our Statement of Consolidated Comprehensive Income.
									All Other
						Apache			Subsidiaries
			Apache			Finance			of Apache			Reclassifications
			Corporation			Canada			Corporation			& Eliminations			Consolidated
			(In millions)
	REVENUES AND OTHER:
	Oil and gas production revenues		$	892		$	—		$	2,755		$	—		$	3,647
	Equity in net income (loss) of affiliates			253			29			(6	)		(276	)		—
	Other			(23	)		14			38			(1	)		28
				1,122			43			2,787			(277	)		3,675
	OPERATING EXPENSES:
	Depreciation, depletion and amortization			328			—			878			—			1,206
	Asset retirement obligation accretion			7			—			37			—			44
	Lease operating expenses			128			—			469			—			597
	Gathering and transportation			14			—			56			—			70
	Taxes other than income			79			—			102			—			181
	General and administrative			91			—			13			(1	)		103
	Acquisition, divestiture, and separation costs			18			—			—			—			18
	Financing costs, net			32			10			(15	)		—			27
				697			10			1,540			(1	)		2,246
	NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES			425			33			1,247			(276	)		1,429
	Provision for income taxes			62			10			506			—			578
	NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST			363			23			741			(276	)		851
	Net loss from discontinued operations, net of tax			(127	)		—			(390	)		—			(517	)
	NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST			236			23			351			(276	)		334
	Net income attributable to noncontrolling interest			—			—			98			—			98
	NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK		$	236		$	23		$	253		$	(276	)	$	236
	COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK (1)		$	235		$	23		$	253		$	(276	)	$	235
	(1)	Comprehensive income (loss) activity is recorded on the Apache Corporation entity and consists of derivative instrument reclassifications and changes in fair value as reflected on our Statement of Consolidated Comprehensive Income.
Supplemental Condensed Consolidating Statement of Cash Flows	APACHE CORPORATION AND SUBSIDIARIES
	CONDENSED CONSOLIDATING STATEMENT OF CASH FLOWS
	For the Quarter Ended March 31, 2015
									All Other
						Apache			Subsidiaries
			Apache			Finance			of Apache			Reclassifications
			Corporation			Canada			Corporation			& Eliminations			Consolidated
			(In millions)
	CASH PROVIDED BY (USED IN) CONTINUING OPERATING ACTIVITIES		$	(396	)	$	(3	)	$	1,049		$	—		$	650
	CASH PROVIDED BY DISCONTINUED OPERATIONS			—			—			—			—			—
	CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES			(396	)		(3	)		1,049			—			650
	CASH FLOWS FROM INVESTING ACTIVITIES:
	Additions to oil and gas property			(771	)		—			(997	)		—			(1,768	)
	Leasehold and property acquisition			(92	)		—			—			—			(92	)
	Additions to gas gathering, transmission and processing facilities			(22	)		—			(201	)		—			(223	)
	Investment in subsidiaries, net			105			—			—			(105	)		—
	Other			(18	)		—			(17	)		—			(35	)
	NET CASH PROVIDED BY (USED IN) CONTINUING INVESTING ACTIVITIES			(798	)		—			(1,215	)		(105	)		(2,118	)
	NET CASH PROVIDED BY DISCONTINUED OPERATIONS			—			—			—			—			—
	NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES			(798	)		—			(1,215	)		(105	)		(2,118	)
	CASH FLOWS FROM FINANCING ACTIVITIES:
	Commercial paper and bank credit facilities, net			1,028			—			—			—			1,028
	Intercompany borrowings			—			(1	)		(104	)		105			—
	Distributions to noncontrolling interest			—			—			(21	)		—			(21	)
	Dividends paid			(94	)		—			—			—			(94	)
	Common stock activity			—			4			(4	)		—			—
	Other			2			—			13			—			15
	NET CASH PROVIDED BY (USED IN) CONTINUING FINANCING ACTIVITIES			936			3			(116	)		105			928
	NET CASH USED IN DISCONTINUED OPERATIONS			—			—			—			—			—
	NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES			936			3			(116	)		105			928
	NET DECREASE IN CASH AND CASH EQUIVALENTS			(258	)		—			(282	)		—			(540	)
	CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR			267			—			502			—			769
	CASH AND CASH EQUIVALENTS AT END OF PERIOD		$	9		$	—		$	220		$	—		$	229
	CASH PROVIDED BY (USED IN) CONTINUING OPERATING ACTIVITIES		$	(186	)	$	(15	)	$	2,412		$	—		$	2,211
	CASH PROVIDED BY DISCONTINUED OPERATIONS			—			—			82			—			82
	CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES			(186	)		(15	)		2,494			—			2,293
	CASH FLOWS FROM INVESTING ACTIVITIES:
	Additions to oil and gas property			(704	)		—			(1,614	)		—			(2,318	)
	Leasehold and property acquisitions			(36	)		—			(8	)		—			(44	)
	Additions to gas gathering, transmission and processing facilities			(19	)		—			(325	)		—			(344	)
	Investment in subsidiaries, net			1,320			—			—			(1,320	)		—
	Other			(7	)		—			16			—			9
	NET CASH PROVIDED BY (USED IN) CONTINUING INVESTING ACTIVITIES			554			—			(1,931	)		(1,320	)		(2,697	)
	NET CASH PROVIDED BY DISCONTINUED OPERATIONS			—			—			748			—			748
	NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES			554			—			(1,183	)		(1,320	)		(1,949	)
	CASH FLOWS FROM FINANCING ACTIVITIES:
	Commercial paper and bank credit facilities, net			42			—			(44	)		—			(2	)
	Intercompany borrowings			—			10			(1,329	)		1,319			—
	Dividends paid			(79	)		—			—			—			(79	)
	Payments on fixed rate debt			(484	)		—			—			—			(484	)
	Other common stock activity, net			—			5			(6	)		1			—
	NET CASH PROVIDED BY (USED IN) CONTINUING FINANCING ACTIVITIES			(521	)		15			(1,379	)		1,320			(565	)
	NET CASH USED IN DISCONTINUED OPERATIONS			—			—			(42	)		—			(42	)
	NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES			(521	)		15			(1,421	)		1,320			(607	)
	NET DECREASE IN CASH AND CASH EQUIVALENTS			(153	)		—			(110	)		—			(263	)
	CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR			155			3			1,748			—			1,906
	CASH AND CASH EQUIVALENTS AT END OF PERIOD		$	2		$	3		$	1,638		$	—		$	1,643
Supplemental Condensed Consolidating Balance Sheet	APACHE CORPORATION AND SUBSIDIARIES
	CONDENSED CONSOLIDATING BALANCE SHEET
	March 31, 2015
									All Other
						Apache			Subsidiaries
			Apache			Finance			of Apache			Reclassifications
			Corporation			Canada			Corporation			& Eliminations			Consolidated
			(In millions)
	ASSETS
	CURRENT ASSETS:
	Cash and cash equivalents		$	9		$	—		$	220		$	—		$	229
	Receivables, net of allowance			512			—			1,255			—			1,767
	Inventories			53			—			613			—			666
	Drilling advances			20			—			448			—			468
	Assets held for sale			—			—			1,804			—			1,804
	Deferred tax asset			612			—			157			—			769
	Prepaid assets and other			114			—			89			—			203
	Intercompany receivable			5,250			—			—			(5,250	)		—
				6,570			—			4,586			(5,250	)		5,906
	PROPERTY AND EQUIPMENT, NET			9,127			—			32,103			—			41,230
	OTHER ASSETS:
	Intercompany receivable			—			—			713			(713	)		—
	Equity in affiliates			24,707			213			437			(25,357	)		—
	Goodwill			—			—			87			—			87
	Deferred charges and other			173			1,001			1,253			(1,000	)		1,427
			$	40,577		$	1,214		$	39,179		$	(32,320	)	$	48,650
	LIABILITIES AND SHAREHOLDERS’ EQUITY
	CURRENT LIABILITIES:
	Accounts payable		$	564		$	9		$	437		$	—		$	1,010
	Current debt			2,598			—			—			—			2,598
	Asset retirement obligation			28			—			19			—			47
	Other current liabilities			663			7			1,168			—			1,838
	Intercompany payable			—			—			5,250			(5,250	)		—
				3,853			16			6,874			(5,250	)		5,493
	LONG-TERM DEBT			9,377			298			—			—			9,675
	DEFERRED CREDITS AND OTHER
	NONCURRENT LIABILITIES:
	Intercompany payable			713			—			—			(713	)		—
	Income taxes			3,220			—			3,391			—			6,611
	Asset retirement obligation			216			—			2,878			—			3,094
	Other			1,987			250			(865	)		(1,000	)		372
				6,136			250			5,404			(1,713	)		10,077
	COMMITMENTS AND CONTINGENCIES
	APACHE SHAREHOLDERS’ EQUITY			21,211			650			24,707			(25,357	)		21,211
	Noncontrolling interest			—			—			2,194			—			2,194
	TOTAL EQUITY			21,211			650			26,901			(25,357	)		23,405
			$	40,577		$	1,214		$	39,179		$	(32,320	)	$	48,650
	APACHE CORPORATION AND SUBSIDIARIES
	CONDENSED CONSOLIDATING BALANCE SHEET
	31-Dec-14
									All Other
						Apache			Subsidiaries
			Apache			Finance			of Apache			Reclassifications
			Corporation			Canada			Corporation			& Eliminations			Consolidated
			(In millions)
	ASSETS
	CURRENT ASSETS:
	Cash and cash equivalents		$	267		$	—		$	502		$	—		$	769
	Receivables, net of allowance			837			—			1,187			—			2,024
	Inventories			24			—			684			—			708
	Drilling advances			34			1			353			—			388
	Assets held for sale			—			—			1,628			—			1,628
	Deferred tax asset			612			—			157			—			769
	Prepaid assets and other			32			—			97			—			129
Intercompany receivable			4,939			—			—			(4,939	)		—
			6,745			1			4,608			(4,939	)		6,415
PROPERTY AND EQUIPMENT, NET			13,940			—			34,136			—			48,076
OTHER ASSETS:
Intercompany receivable			—			—			608			(608	)		—
Equity in affiliates			25,791			869			444			(27,104	)		—
Goodwill			—			—			87			—			87
Deferred charges and other			175			1,002			1,197			(1,000	)		1,374
		$	46,651		$	1,872		$	41,080		$	(33,651	)	$	55,952
LIABILITIES AND SHAREHOLDERS’ EQUITY
CURRENT LIABILITIES:
Accounts payable		$	748		$	10		$	452		$	—		$	1,210
Asset retirement obligation			28			—			9			—			37
Other current liabilities			1,014			1			1,402			—			2,417
Intercompany payable			—			—			4,939			(4,939	)		—
			1,790			11			6,802			(4,939	)		3,664
LONG-TERM DEBT			10,947			298			—			—			11,245
DEFERRED CREDITS AND OTHER
NONCURRENT LIABILITIES:
Intercompany payable			608			—			—			(608	)		—
Income taxes			5,076			—			4,423			—			9,499
Asset retirement obligation			211			—			2,837			—			3,048
Other			2,082			250			(973	)		(1,000	)		359
			7,977			250			6,287			(1,608	)		12,906
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS’ EQUITY			25,937			1,313			25,791			(27,104	)		25,937
Noncontrolling interest			—			—			2,200			—			2,200
TOTAL EQUITY			25,937			1,313			27,991			(27,104	)		28,137
		$	46,651		$	1,872		$	41,080		$	(33,651	)	$	55,952

Summary_of_Significant_Account2

Summary of Significant Accounting Policies - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Schedule Of Significant Accounting Policies [Line Items]
Discount rate	10.00%
United States [Member]
Schedule Of Significant Accounting Policies [Line Items]
Write-down of the carrying value of Oil and Gas properties	5,200
Write-down of the carrying value of Oil and Gas properties, net of tax	3,400
Canada [Member]
Schedule Of Significant Accounting Policies [Line Items]
Write-down of the carrying value of Oil and Gas properties	1,400
Write-down of the carrying value of Oil and Gas properties, net of tax	1,000
North Sea [Member]
Schedule Of Significant Accounting Policies [Line Items]
Write-down of the carrying value of Oil and Gas properties	632
Write-down of the carrying value of Oil and Gas properties, net of tax	316

Acquisitions_and_Divestitures_1

Acquisitions and Divestitures - Additional Information - 2015 Activity - LNG Projects Divestitures (Detail) (USD $)	1 Months Ended	3 Months Ended		1 Months Ended	3 Months Ended
	Dec. 31, 2014	Mar. 31, 2015	Dec. 31, 2014	Apr. 30, 2015	Jun. 30, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of oil and gas properties	$1,300,000,000
LNG Projects [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Impairment loss assets		0	1,000,000,000
Impairment loss assets net		0	753,000,000
LNG Projects [Member] | Australia [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of oil and gas properties		1,400,000,000
LNG Projects [Member] | Canada [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of oil and gas properties		500,000,000
LNG Projects [Member] | Oil and Gas Properties [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Accounting treatment on disposal of reserves		Proceeds from the disposition of oil and gas properties are accounted for as a reduction to capitalized costs unless a significant portion (greater than 25 percent) of the Company's reserve quantities in a particular country are sold, in which case a gain or loss is recognized in income.
Subsequent Event [Member] | Wheatstone LNG and Kitimat LNG [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds for the sale interest in LNG projects				3,700,000,000
Subsequent Event [Member] | LNG Projects [Member] | Oil and Gas Properties [Member] | Australia [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale of upstream assets					900,000,000
Percentage of region's total reserves sold					50.00%
Loss on sale of upstream assets, net of tax					$600,000,000

Acquisitions_and_Divestitures_2

Acquisitions and Divestitures - Summary of Associated Assets and Liabilities Classified as Held for Sale - 2015 Activity - LNG Projects Divestitures (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
ASSETS
Assets held for sale	$1,804	$1,628
LNG Projects [Member]
ASSETS
Current assets	15	30
GTP assets	1,688	1,497
Other long-term assets	101	101
Assets held for sale	1,804	1,628
LIABILITIES
Current liabilities	1	12
Other long-term liabilities	6	7
Liabilities held for sale	7	19
Canada [Member] | LNG Projects [Member]
ASSETS
Current assets	15	30
GTP assets	229	200
Other long-term assets	101	101
Assets held for sale	345	331
LIABILITIES
Current liabilities	1	12
Other long-term liabilities	6	7
Liabilities held for sale	7	19
Australia [Member] | LNG Projects [Member]
ASSETS
GTP assets	1,459	1,297
Assets held for sale	$1,459	$1,297

Acquisitions_and_Divestitures_3

Acquisitions and Divestitures - Additional Information - 2015 Activity - Australia Divestiture (Detail) (USD $)	0 Months Ended	1 Months Ended	3 Months Ended	0 Months Ended
	Jun. 30, 2014	Dec. 31, 2014	Mar. 31, 2015	Apr. 08, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Effective date of acquisition	1-May-14	1-Oct-14
LNG Projects [Member] | Apache Energy Limited [Member] | Australia [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Effective date of acquisition			1-Oct-14
LNG Projects [Member] | Apache Energy Limited [Member] | Australia [Member] | Subsequent Event [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Cash consideration for subsidiary				$2,100,000,000
Estimated loss on divestiture				$1,000,000,000

Acquisitions_and_Divestitures_4

Acquisitions and Divestitures - Additional Information - 2015 Activity - Leasehold Acquisitions (Detail) (North America [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
North America [Member]
Business Acquisition [Line Items]
Leasehold acquisition	$92	$44

Acquisitions_and_Divestitures_5

Acquisitions and Divestitures - Additional Information - 2014 Activity - Anadarko Basin and Southern Louisiana Divestitures (Detail) (USD $)	0 Months Ended	1 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of oil and gas assets		$1,300
Effective date of sale	1-May-14	1-Oct-14
Anadarko Basin [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Oil and gas properties sold		115,000
Southern Louisiana [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Oil and gas properties sold		90,000

Acquisitions_and_Divestitures_6

Acquisitions and Divestitures - Additional Information - 2014 Activity - Gulf of Mexico Divestiture (Detail) (USD $)	0 Months Ended	1 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of 11 primary-term deepwater exploration blocks		$1,300
Effective date of sale	1-May-14	1-Oct-14
Gulf of Mexico, Devon [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of 11 primary-term deepwater exploration blocks	1,400

Acquisitions_and_Divestitures_7

Acquisitions and Divestitures - Additional Information - 2014 Activity - Canada Divestiture (Detail) (USD $)	0 Months Ended	1 Months Ended	0 Months Ended
In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2014	Apr. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of oil and gas assets		$1,300
Effective date of sale	1-May-14	1-Oct-14
Natural Gas [Member] | Canada [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Sale of oil and gas assets			$374
Natural gas properties sold			328,400
Effective date of sale			1-Jan-14
Natural Gas Liquids [Member] | Wapiti Canada [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Working interest percentage			100.00%

Acquisitions_and_Divestitures_8

Acquisitions and Divestitures - Additional Information - 2014 Activity - Argentina Divestiture (Detail) (USD $)	1 Months Ended	0 Months Ended
In Millions, unless otherwise specified	Dec. 31, 2014	Mar. 12, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of operations	$1,300
Argentina [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of operations		800
Liabilities assumed		$52
Debt assumed beginning date		30-Jun-13

Acquisitions_and_Divestitures_9

Acquisitions and Divestitures - Summary of Sales and Other Operating Revenue and Loss From Discontinued Operation Related to Disposition (Detail) (Argentina [Member], Argentina Divestiture [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2014
Argentina [Member] | Argentina Divestiture [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenues and other from discontinued operations	$87
Loss from Argentina divestiture	-539
Loss from operations in Argentina	-1
Income tax benefit	23
Loss from discontinued operations, net of tax	($517)

Recovered_Sheet1

Acquisitions and Divestitures - Additional Information - 2014 Activity - Leasehold Acquisitions (Detail) (North America [Member], USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
North America [Member]
Business Acquisition [Line Items]
Leasehold acquisition	$92	$44

Other_Current_Liabilities_Deta

Other Current Liabilities - Details of Other Current Liabilities (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Payables and Accruals [Abstract]
Accrued operating expenses	$137	$163
Accrued exploration and development	1,194	1,606
Accrued compensation and benefits	127	204
Accrued interest	118	160
Accrued income taxes	27	54
Other	235	230
Total Other current liabilities	$1,838	$2,417

Asset_Retirement_Obligation_As

Asset Retirement Obligation - Asset Retirement Obligation (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Dec. 31, 2014
Asset Retirement Obligation Disclosure [Abstract]
Asset retirement obligation at beginning of year	$3,085
Liabilities incurred	41
Liabilities settled	-58
Accretion expense	44
Revisions in estimated liabilities	29
Asset retirement obligation at end of year	3,141
Less current portion	-47	-37
Asset retirement obligation, long-term	$3,094	$3,048

Debt_and_Financing_Costs_Summa

Debt and Financing Costs - Summary of Carrying Amounts and Estimated Fair Values (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014
In Millions, unless otherwise specified
Debt Instrument [Line Items]
Total Debt, Carrying Amount	$12,273	$11,245
Total Debt, Fair Value	13,256	11,514
Commercial Paper and Committed Bank Facilities [Member]
Debt Instrument [Line Items]
Commercial paper and committed bank facilities, Carrying Amount	2,577	1,570
Total Debt, Fair Value	2,577	1,570
Uncommitted Bank Lines [Member]
Debt Instrument [Line Items]
Uncommitted bank lines, Carrying Amount	21
Total Debt, Fair Value	21
Notes and Debentures [Member]
Debt Instrument [Line Items]
Notes and debentures, Carrying Amount	9,675	9,675
Total Debt, Fair Value	$10,658	$9,944

Debt_and_Financing_Costs_Addit

Debt and Financing Costs - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015
Debt Instrument [Line Items]
Unsecured credit facility available to Company	$5,300,000,000
Line of credit facility, remaining borrowing capacity	2,700,000,000
Commercial paper program	5,000,000,000
Current debt outstanding	2,598,000,000
Australia [Member]
Debt Instrument [Line Items]
Revolving bank facility	300,000,000
Canada [Member]
Debt Instrument [Line Items]
Revolving bank facility	300,000,000
Revolving Credit Facility Due December 2015 [Member]
Debt Instrument [Line Items]
Unsecured credit facility available to Company	2,000,000,000
Credit facility maturity date	31-Dec-15
Revolving Credit Facility Due August 2016 [Member]
Debt Instrument [Line Items]
Unsecured credit facility available to Company	1,000,000,000
Credit facility maturity date	31-Aug-16
Revolving Credit Facility Due June 2018 [Member]
Debt Instrument [Line Items]
Unsecured credit facility available to Company	2,300,000,000
Credit facility maturity date	30-Jun-18
Notes Payable, Other Payables [Member]
Debt Instrument [Line Items]
Period For Borrowing Funds	270 days
Credit Facility One [Member]
Debt Instrument [Line Items]
Revolving bank facility	2,000,000,000
Credit Facility Two [Member]
Debt Instrument [Line Items]
Revolving bank facility	1,700,000,000
Credit Facility Three [Member] | United States [Member]
Debt Instrument [Line Items]
Revolving bank facility	$1,000,000,000

Debt_and_Financing_Costs_Compo

Debt and Financing Costs - Components of Financing Costs, Net (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Debt Disclosure [Abstract]
Interest expense	$128	$124
Amortization of deferred loan costs	2	2
Capitalized interest	-80	-95
Interest income	-4	-4
Financing costs, net	$46	$27

Income_Taxes_Additional_Inform

Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Income Tax [Line Items]
Depreciation, depletion and amortization	$8,407	$1,206
United Kingdom [Member]
Income Tax [Line Items]
Corporate income tax rate, percent	50.00%
Deferred tax benefit related to remeasurement of deferred tax liability	619
Scenario, Previously Reported [Member] | United Kingdom [Member]
Income Tax [Line Items]
Corporate income tax rate, percent	62.00%
Oil And Gas Property And Equipment Additional [Member]
Income Tax [Line Items]
Depreciation, depletion and amortization	$7,220

Commitments_and_Contingencies_

Commitments and Contingencies - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015
Commitment And Contingencies [Line Items]
Accrued liability for legal contingencies	$23,000,000
Undiscounted reserve for environmental remediation	63,000,000
Minimum [Member] | Apollo Exploration Lawsuit [Member]
Commitment And Contingencies [Line Items]
Plaintiffs alleged damages	$1,100,000,000

Capital_Stock_Net_Income_loss_

Capital Stock - Net Income (loss) Per Common Share (Detail) (USD $)	3 Months Ended
In Millions, except Per Share data, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Earnings Per Share [Abstract]
Income (loss) from continuing operations	($4,651)	$753
Loss from discontinued operations		-517
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	-4,651	236
Income (loss) from continuing operations	-4,651	753
Loss from discontinued operations		-517
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	($4,651)	$236
Income (loss) from continuing operations, shares	377	394
Loss from discontinued operations, shares	377	394
Income (loss) attributable to common stock, shares	377	394
Stock options and other, shares		2
Income (loss) from continuing operations, shares	377	396
Loss from discontinued operations, shares	377	396
Income (loss) attributable to common stock, shares	377	396
Basic income (loss) from continuing operations per share	($12.34)	$1.92
Basic (loss) from discontinued operations per share		($1.32)
Income (loss) attributable to common stock, per share	($12.34)	$0.60
Diluted income (loss) from continuing operations per share	($12.34)	$1.90
Diluted (loss) from discontinued operations per share		($1.30)
Income (loss) attributable to common stock, per share	($12.34)	$0.60

Capital_Stock_Additional_Infor

Capital Stock - Additional Information (Detail) (USD $)	0 Months Ended	3 Months Ended
In Millions, except Share data, unless otherwise specified	Jun. 10, 2013	Mar. 31, 2015	Mar. 31, 2014
Equity [Abstract]
Options and restricted stock, anti-dilutive		9,100,000	5,800,000
Dividends, Common stock		$94	$98
Common stock share purchase, shares		40,000,000
Common stock share repurchase, shares	32,200,000
Common stock share repurchase, per share	$88.96

Business_Segment_Information_A

Business Segment Information - Additional Information (Detail)	3 Months Ended
	Mar. 31, 2015
	Country
Segment Reporting [Abstract]
Production in number of countries	5

Business_Segment_Information_F

Business Segment Information - Financial Segment Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Oil and gas production revenues	$1,806	$3,647
Operating Income	-7,323	1,549
Other Income (Expense):
Other	12	28
General and administrative	-79	-103
Acquisition, divestiture, and separation costs	-54	-18
Financing costs, net	-46	-27
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	-7,490	1,429
Total Assets	48,650	61,121	55,952
United States [Member]
Segment Reporting Information [Line Items]
Oil and gas production revenues	660	1,505
Operating Income	-5,320	663
Other Income (Expense):
Total Assets	21,577	30,618
Canada [Member]
Segment Reporting Information [Line Items]
Oil and gas production revenues	133	318
Operating Income	-1,430	71
Other Income (Expense):
Total Assets	5,288	7,102
Egypt [Member]
Segment Reporting Information [Line Items]
Oil and gas production revenues	532	950
Operating Income	102	536
Other Income (Expense):
Total Assets	7,247	7,350
Australia [Member]
Segment Reporting Information [Line Items]
Oil and gas production revenues	168	256
Operating Income	-12	96
Other Income (Expense):
Total Assets	9,044	8,403
North Sea [Member]
Segment Reporting Information [Line Items]
Oil and gas production revenues	313	618
Operating Income	-663	183
Other Income (Expense):
Total Assets	5,376	7,599
Other International [Member]
Other Income (Expense):
Total Assets	$118	$49

Business_Segment_Information_F1

Business Segment Information - Financial Segment Information (Parenthetical) (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
United States [Member]
Segment Reporting Information [Line Items]
Write-down of the carrying value of Oil and Gas properties	$5,200
Canada [Member]
Segment Reporting Information [Line Items]
Write-down of the carrying value of Oil and Gas properties	1,400
North Sea [Member]
Segment Reporting Information [Line Items]
Write-down of the carrying value of Oil and Gas properties	$632

Supplemental_Guarantor_Informa2

Supplemental Guarantor Information - Additional Information (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015
Apache Finance Canada [Member]
Condensed Financial Statements, Captions [Line Items]
Equity ownership percentage	100.00%
Notes Due 2029 [Member]
Condensed Financial Statements, Captions [Line Items]
Publicly traded notes	$300
Publicly-traded notes maturity date	2029

Supplemental_Guarantor_Informa3

Supplemental Guarantor Information - Supplemental Condensed Consolidating Statement of Operations (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
REVENUES AND OTHER:
Oil and gas production revenues	$1,806	$3,647
Other	12	28
Total revenues and other	1,818	3,675
OPERATING EXPENSES:
Depreciation, depletion and amortization	8,407	1,206
Asset retirement obligation accretion	44	44
Lease operating expenses	538	597
Gathering and transportation	56	70
Taxes other than income	84	181
General and administrative	79	103
Acquisition, divestiture, and separation costs	54	18
Financing costs, net	46	27
Total operating expenses	9,308	2,246
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	-7,490	1,429
Provision (benefit) for income taxes	-2,854	578
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	-4,636	851
Net income (loss) from discontinued operations, net of tax		-517
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	-4,636	334
Net income attributable to noncontrolling interest	15	98
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	-4,651	236
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	-4,651	235
Reclassifications & Eliminations [Member]
REVENUES AND OTHER:
Equity in net income (loss) of affiliates	1,738	-276
Other		-1
Total revenues and other	1,738	-277
OPERATING EXPENSES:
General and administrative		-1
Total operating expenses		-1
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	1,738	-276
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	1,738	-276
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	1,738	-276
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	1,738	-276
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	1,738	-276
Apache Corporation [Member]
REVENUES AND OTHER:
Oil and gas production revenues	365	892
Equity in net income (loss) of affiliates	-1,085	253
Other	-40	-23
Total revenues and other	-760	1,122
OPERATING EXPENSES:
Depreciation, depletion and amortization	5,499	328
Asset retirement obligation accretion	4	7
Lease operating expenses	124	128
Gathering and transportation	9	14
Taxes other than income	34	79
General and administrative	64	91
Acquisition, divestiture, and separation costs	54	18
Financing costs, net	52	32
Total operating expenses	5,840	697
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	-6,600	425
Provision (benefit) for income taxes	-1,949	62
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	-4,651	363
Net income (loss) from discontinued operations, net of tax		-127
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	-4,651	236
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	-4,651	236
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	-4,651	235
Apache Finance Canada [Member]
REVENUES AND OTHER:
Equity in net income (loss) of affiliates	-654	29
Other	14	14
Total revenues and other	-640	43
OPERATING EXPENSES:
Financing costs, net	10	10
Total operating expenses	10	10
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	-650	33
Provision (benefit) for income taxes	3	10
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	-653	23
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	-653	23
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	-653	23
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	-653	23
All Other Subsidiaries of Apache Corporation [Member]
REVENUES AND OTHER:
Oil and gas production revenues		2,755
Equity in net income (loss) of affiliates	1	-6
Other	38	38
Total revenues and other	1,480	2,787
OPERATING EXPENSES:
Depreciation, depletion and amortization	2,908	878
Asset retirement obligation accretion	40	37
Lease operating expenses	414	469
Gathering and transportation	47	56
Taxes other than income	50	102
General and administrative	15	13
Financing costs, net	-16	-15
Total operating expenses	3,458	1,540
NET INCOME (LOSS) FROM CONTINUING OPERATIONS BEFORE INCOME TAXES	-1,978	1,247
Provision (benefit) for income taxes	-908	506
NET INCOME (LOSS) FROM CONTINUING OPERATIONS INCLUDING NONCONTROLLING INTEREST	-1,070	741
Net income (loss) from discontinued operations, net of tax		-390
NET INCOME (LOSS) INCLUDING NONCONTROLLING INTEREST	-1,070	351
Net income attributable to noncontrolling interest	15	98
NET INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	-1,085	253
COMPREHENSIVE INCOME (LOSS) ATTRIBUTABLE TO COMMON STOCK	($1,085)	$253

Supplemental_Guarantor_Informa4

Supplemental Guarantor Information - Supplemental Condensed Consolidating Statement of Cash Flows (Detail) (USD $)	3 Months Ended
In Millions, unless otherwise specified	Mar. 31, 2015	Mar. 31, 2014
Condensed Financial Statements, Captions [Line Items]
CASH PROVIDED BY (USED IN) CONTINUING OPERATING ACTIVITIES	$650	$2,211
CASH PROVIDED BY DISCONTINUED OPERATIONS		82
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	650	2,293
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	-1,768	-2,318
Leasehold and property acquisition	-92	-44
Additions to gas gathering, transmission and processing facilities	-223	-344
Other	-35	9
NET CASH PROVIDED BY (USED IN) CONTINUING INVESTING ACTIVITIES	-2,118	-2,697
NET CASH PROVIDED BY DISCONTINUED OPERATIONS		-42
NET CASH PROVIDED BY DISCONTINUED OPERATIONS		748
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	-2,118	-1,949
CASH FLOWS FROM FINANCING ACTIVITIES:
Commercial paper and bank credit facilities, net	1,028	-2
Distributions to noncontrolling interest	-21
Dividends paid	-94	-79
Payments on fixed rate debt		-484
Other	15
NET CASH PROVIDED BY (USED IN) CONTINUING FINANCING ACTIVITIES	928	-565
NET CASH USED IN DISCONTINUED OPERATIONS		-42
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	928	-607
NET DECREASE IN CASH AND CASH EQUIVALENTS	-540	-263
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	769	1,906
CASH AND CASH EQUIVALENTS AT END OF PERIOD	229	1,643
Reclassifications & Eliminations [Member]
CASH FLOWS FROM INVESTING ACTIVITIES:
Investment in subsidiaries, net	-105	-1,320
NET CASH PROVIDED BY (USED IN) CONTINUING INVESTING ACTIVITIES	-105	-1,320
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	-105	-1,320
CASH FLOWS FROM FINANCING ACTIVITIES:
Intercompany borrowings	105	1,319
Other		1
NET CASH PROVIDED BY (USED IN) CONTINUING FINANCING ACTIVITIES	105	1,320
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	105	1,320
Apache Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
CASH PROVIDED BY (USED IN) CONTINUING OPERATING ACTIVITIES	-396	-186
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	-396	-186
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	-771	-704
Leasehold and property acquisition	-92	-36
Additions to gas gathering, transmission and processing facilities	-22	-19
Investment in subsidiaries, net	105	1,320
Other	-18	-7
NET CASH PROVIDED BY (USED IN) CONTINUING INVESTING ACTIVITIES	-798	554
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	-798	554
CASH FLOWS FROM FINANCING ACTIVITIES:
Commercial paper and bank credit facilities, net	1,028	42
Dividends paid	-94	-79
Payments on fixed rate debt		-484
Other	2
NET CASH PROVIDED BY (USED IN) CONTINUING FINANCING ACTIVITIES	936	-521
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	936	-521
NET DECREASE IN CASH AND CASH EQUIVALENTS	-258	-153
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	267	155
CASH AND CASH EQUIVALENTS AT END OF PERIOD	9	2
Apache Finance Canada [Member]
Condensed Financial Statements, Captions [Line Items]
CASH PROVIDED BY (USED IN) CONTINUING OPERATING ACTIVITIES	-3	-15
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	-3	-15
CASH FLOWS FROM FINANCING ACTIVITIES:
Intercompany borrowings	-1	10
Common stock activity	4
Other		5
NET CASH PROVIDED BY (USED IN) CONTINUING FINANCING ACTIVITIES	3	15
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	3	15
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR		3
CASH AND CASH EQUIVALENTS AT END OF PERIOD		3
All Other Subsidiaries of Apache Corporation [Member]
Condensed Financial Statements, Captions [Line Items]
CASH PROVIDED BY (USED IN) CONTINUING OPERATING ACTIVITIES	1,049	2,412
CASH PROVIDED BY DISCONTINUED OPERATIONS		82
CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	1,049	2,494
CASH FLOWS FROM INVESTING ACTIVITIES:
Additions to oil and gas property	-997	-1,614
Leasehold and property acquisition		-8
Additions to gas gathering, transmission and processing facilities	-201	-325
Other	-17	16
NET CASH PROVIDED BY (USED IN) CONTINUING INVESTING ACTIVITIES	-1,215	-1,931
NET CASH PROVIDED BY DISCONTINUED OPERATIONS		-42
NET CASH PROVIDED BY DISCONTINUED OPERATIONS		748
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	-1,215	-1,183
CASH FLOWS FROM FINANCING ACTIVITIES:
Commercial paper and bank credit facilities, net		-44
Intercompany borrowings	-104	-1,329
Distributions to noncontrolling interest	-21
Common stock activity	-4
Other	13	-6
NET CASH PROVIDED BY (USED IN) CONTINUING FINANCING ACTIVITIES	-116	-1,379
NET CASH USED IN DISCONTINUED OPERATIONS		-42
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	-116	-1,421
NET DECREASE IN CASH AND CASH EQUIVALENTS	-282	-110
CASH AND CASH EQUIVALENTS AT BEGINNING OF YEAR	502	1,748
CASH AND CASH EQUIVALENTS AT END OF PERIOD	$220	$1,638

Supplemental_Guarantor_Informa5

Supplemental Guarantor Information - Supplemental Condensed Consolidating Balance Sheet (Detail) (USD $)	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
In Millions, unless otherwise specified
CURRENT ASSETS:
Cash and cash equivalents	$229	$769	$1,643	$1,906
Receivables, net of allowance	1,767	2,024
Inventories	666	708
Drilling advances	468	388
Assets held for sale	1,804	1,628
Deferred tax asset	769	769
Prepaid assets and other	203	129
Total current assets	5,906	6,415
PROPERTY AND EQUIPMENT, NET	41,230	48,076
OTHER ASSETS:
Goodwill	87	87
Deferred charges and other	1,427	1,374
Total assets	48,650	55,952	61,121
CURRENT LIABILITIES:
Accounts payable	1,010	1,210
Current debt	2,598
Asset retirement obligation	47	37
Other current liabilities	1,838	2,417
Total current liabilities	5,493	3,664
LONG-TERM DEBT	9,675	11,245
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Income taxes	6,611	9,499
Asset retirement obligation	3,094	3,048
Other	372	359
Total deferred credits and other noncurrent liabilities	10,077	12,906
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	21,211	25,937
Noncontrolling interest	2,194	2,200
TOTAL EQUITY	23,405	28,137	35,177	35,393
Total liabilities and shareholders' equity	48,650	55,952
Reclassifications & Eliminations [Member]
CURRENT ASSETS:
Intercompany receivable	-5,250	-4,939
Total current assets	-5,250	-4,939
OTHER ASSETS:
Intercompany receivable	-713	-608
Equity in affiliates	-25,357	-27,104
Deferred charges and other	-1,000	-1,000
Total assets	-32,320	-33,651
CURRENT LIABILITIES:
Intercompany payable	-5,250	-4,939
Total current liabilities	-5,250	-4,939
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	-713	-608
Other	-1,000	-1,000
Total deferred credits and other noncurrent liabilities	-1,713	-1,608
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	-25,357	-27,104
TOTAL EQUITY	-25,357	-27,104
Total liabilities and shareholders' equity	-32,320	-33,651
Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	9	267	2	155
Receivables, net of allowance	512	837
Inventories	53	24
Drilling advances	20	34
Deferred tax asset	612	612
Prepaid assets and other	114	32
Intercompany receivable	5,250	4,939
Total current assets	6,570	6,745
PROPERTY AND EQUIPMENT, NET	9,127	13,940
OTHER ASSETS:
Equity in affiliates	24,707	25,791
Deferred charges and other	173	175
Total assets	40,577	46,651
CURRENT LIABILITIES:
Accounts payable	564	748
Current debt	2,598
Asset retirement obligation	28	28
Other current liabilities	663	1,014
Total current liabilities	3,853	1,790
LONG-TERM DEBT	9,377	10,947
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Intercompany payable	713	608
Income taxes	3,220	5,076
Asset retirement obligation	216	211
Other	1,987	2,082
Total deferred credits and other noncurrent liabilities	6,136	7,977
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	21,211	25,937
TOTAL EQUITY	21,211	25,937
Total liabilities and shareholders' equity	40,577	46,651
Apache Finance Canada [Member]
CURRENT ASSETS:
Cash and cash equivalents			3	3
Drilling advances		1
Total current assets		1
OTHER ASSETS:
Equity in affiliates	213	869
Deferred charges and other	1,001	1,002
Total assets	1,214	1,872
CURRENT LIABILITIES:
Accounts payable	9	10
Other current liabilities	7	1
Total current liabilities	16	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	650	1,313
TOTAL EQUITY	650	1,313
Total liabilities and shareholders' equity	1,214	1,872
All Other Subsidiaries of Apache Corporation [Member]
CURRENT ASSETS:
Cash and cash equivalents	220	502	1,638	1,748
Receivables, net of allowance	1,255	1,187
Inventories	613	684
Drilling advances	448	353
Assets held for sale	1,804	1,628
Deferred tax asset	157	157
Prepaid assets and other	89	97
Total current assets	4,586	4,608
PROPERTY AND EQUIPMENT, NET	32,103	34,136
OTHER ASSETS:
Intercompany receivable	713	608
Equity in affiliates	437	444
Goodwill	87	87
Deferred charges and other	1,253	1,197
Total assets	39,179	41,080
CURRENT LIABILITIES:
Accounts payable	437	452
Asset retirement obligation	19	9
Other current liabilities	1,168	1,402
Intercompany payable	5,250	4,939
Total current liabilities	6,874	6,802
DEFERRED CREDITS AND OTHER NONCURRENT LIABILITIES:
Income taxes	3,391	4,423
Asset retirement obligation	2,878	2,837
Other	-865	-973
Total deferred credits and other noncurrent liabilities	5,404	6,287
COMMITMENTS AND CONTINGENCIES
APACHE SHAREHOLDERS' EQUITY	24,707	25,791
Noncontrolling interest	2,194	2,200
TOTAL EQUITY	26,901	27,991
Total liabilities and shareholders' equity	$39,179	$41,080