DEBT AND FINANCING COSTS - Narrative (Details)				1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 01, 2024 USD ($)	Jan. 30, 2024 USD ($)	Apr. 29, 2022 USD ($) option creditAgreement guarantyOfObligation	Dec. 31, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2024 GBP (£)	Dec. 31, 2023 GBP (£)	Apr. 29, 2022 GBP (£) creditAgreement guarantyOfObligation
Debt Instrument [Line Items]
Finance lease obligations, current				$ 2,000,000	$ 2,000,000		$ 2,000,000
Gain on extinguishment of debt					0	$ 0	0	$ 9,000,000
Number of unsecured guaranties of obligations | guarantyOfObligation			2								2
APA Corp | Commercial Paper
Debt Instrument [Line Items]
Debt instrument term				397 days
Debt face amount				$ 1,800,000,000
Debt instrument guarantee terms, benchmark amount (less than)				1,000,000,000
Borrowing outstanding				0	330,000,000		330,000,000
Syndicated Credit Facility | Unsecured Debt | APA Corp
Debt Instrument [Line Items]
Number of credit agreements | creditAgreement			2								2
USD Agreement | Line of Credit
Debt Instrument [Line Items]
Number of credit agreements denominated in US dollars | creditAgreement			1								1
Outstanding borrowings				0	0		0
USD Agreement | Line of Credit | APA Corp
Debt Instrument [Line Items]
Debt instrument term			5 years
Line of credit facility, committed amount			$ 1,800,000,000
Credit facility maximum borrowing capacity			300,000,000
Line of credit facility, increased committed amount			$ 2,300,000,000
Line of credit facility, number of extension options | option			2
Debt extension term			1 year
Outstanding borrowings				372,000,000	232,000,000		232,000,000
USD Agreement | Line of Credit | APA Corp | Letter of Credit
Debt Instrument [Line Items]
Credit facility maximum borrowing capacity			$ 750,000,000
Line of credit facility, current borrowing capacity			$ 150,000,000
Letters of credit outstanding, amount				0	0		0
GBP Agreement | Line of Credit | APA Corp
Debt Instrument [Line Items]
Debt instrument term			5 years
Line of credit facility, committed amount | £											£ 1,500,000,000
Debt extension term			1 year
GBP Agreement | Line of Credit | APA Corp | Letter of Credit
Debt Instrument [Line Items]
Line of credit facility, number of extension options | option			2
Letters of credit outstanding, amount | £									£ 303,000,000	£ 348,000,000
Former Facility | Revolving Credit Facility
Debt Instrument [Line Items]
Line of credit facility, covenant benchmark amount			$ 1,000,000,000
Apache credit facility
Debt Instrument [Line Items]
Outstanding borrowings				0	0		0
Uncommitted Lines Of Credit | Line of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount				$ 2,000,000	11,000,000		11,000,000		£ 296,000,000	£ 296,000,000
Delayed-Drawn Term Loan | Unsecured Debt | APA Corp
Debt Instrument [Line Items]
Debt face amount	$ 2,000,000,000	$ 2,000,000,000
Debt instrument guarantee terms, benchmark amount (less than)		$ 1,000,000,000
Term Loan Credit Agreement | Unsecured Debt | APA Corp
Debt Instrument [Line Items]
Debt face amount	$ 1,500,000,000
Remaining borrowing capacity					$ 1,000,000,000		$ 1,000,000,000
Delayed-Drawn Term Loan, Three Year Tranche Loans | Unsecured Debt | APA Corp
Debt Instrument [Line Items]
Debt instrument term	3 years
Debt face amount	$ 1,500,000,000
Delayed-Drawn Term Loan, 364-Day Tranche Loans | Unsecured Debt | APA Corp
Debt Instrument [Line Items]
Debt instrument term	364 days
Debt face amount	$ 500,000,000
Open Market Repurchase | Senior Notes
Debt Instrument [Line Items]
Debt repurchased principal amount						74,000,000		74,000,000
Debt repurchase price						$ 65,000,000		65,000,000
Gain on extinguishment of debt								$ 9,000,000