COMMITMENTS AND CONTINGENCIES - Additional Information (Details) $ in Millions							3 Months Ended		12 Months Ended
	Sep. 10, 2020 defendant	Sep. 11, 2019 USD ($) plaintiff	Dec. 20, 2017 Action	Jul. 17, 2017 Action defendant	Mar. 21, 2016 USD ($)	Mar. 20, 2016 USD ($)	Dec. 31, 2021 USD ($) bond subsidiary	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) subsidiary bond Action	Dec. 31, 2020 USD ($) sidetrack	Dec. 31, 2019 USD ($)	Dec. 31, 2013 USD ($) source	Dec. 31, 2017 AUD ($)	Apr. 30, 2017 AUD ($)	Mar. 12, 2014 USD ($)
Commitment And Contingencies [Line Items]
Accrued liability for legal contingencies							$ 84,000,000		$ 84,000,000
Environmental tax and royalty obligations															$ 100,000,000
Retain right of obligations							45,000,000		45,000,000
Number of plaintiffs | plaintiff		4
Maximum cost considered to be recognized for additional reserve							300,000		300,000
Undiscounted reserve for environmental remediation							2,000,000		2,000,000
Standby loan agreed to provide related to ARO							400,000,000		400,000,000
Decommissioning contingency for sold Gulf of Mexico properties (Note 12)							1,086,000,000		1,086,000,000	$ 0
Decommissioning contingency for sold properties, total							1,200,000,000		1,200,000,000
Current decommissioning contingency for sold Gulf of Mexico properties							100,000,000		100,000,000	0
Decommissioning security for sold Gulf of Mexico properties (Note 12)							640,000,000		640,000,000	0
Decommissioning security for sold Gulf of Mexico properties, total							740,000,000		740,000,000
Current decommissioning security for sold Gulf of Mexico assets							$ 100,000,000		100,000,000
Loss on previously sold Gulf of Mexico properties								$ 446,000,000	446,000,000	0	$ 0
Fixed operating lease expenses									127,000,000	149,000,000	222,000,000
Depreciation on finance lease asset									2,000,000	2,000,000	7,000,000
Interest on finance lease asset									2,000,000	2,000,000	3,000,000
Exploration, development, and operating activities									161,000,000	328,000,000	468,000,000
Variable lease payment									$ 63,000,000	$ 41,000,000	78,000,000
Finance Lease, Liability, Current, Statement of Financial Position [Extensible List]							Current debt		Current debt	Current debt
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]							LONG-TERM DEBT (Note 10) ($657 and $624 related to Altus VIE)		LONG-TERM DEBT (Note 10) ($657 and $624 related to Altus VIE)	LONG-TERM DEBT (Note 10) ($657 and $624 related to Altus VIE)
Egypt
Commitment And Contingencies [Line Items]
Exploration, development, and operating activities									$ 86,000,000	$ 102,000,000	$ 139,000,000
Apollo Exploration Lawsuit
Commitment And Contingencies [Line Items]
Loss contingency damages sought value					$ 200,000,000
Canadian Operations Divestiture Dispute
Commitment And Contingencies [Line Items]
Loss contingency punitive damages		$ 60,000,000
California Litigation
Commitment And Contingencies [Line Items]
Number of actions filed | Action			2	3
Number of defendants | defendant				30
Delaware Litigation
Commitment And Contingencies [Line Items]
Number of defendants | defendant	25
Castex Lawsuit
Commitment And Contingencies [Line Items]
Loss contingency damages sought value										200,000,000
Loss contingency estimate of possible loss							$ 13,500,000		13,500,000	$ 60,000,000
Number of sidetracks | sidetrack										5
Oklahoma Class Actions
Commitment And Contingencies [Line Items]
Loss contingency damages sought value									$ 200,000,000
Number of actions filed | Action									2
Litigation settlement, amount awarded to other party							$ 25,000,000
Apache Australia Operation | Australian Operations Divestiture Dispute
Commitment And Contingencies [Line Items]
Gain contingency, unrecorded amount														$ 80
Loss contingency estimate of possible loss													$ 200
Gulf Of Mexico Shelf Operations And Properties | Disposal Group, Disposed of by Sale, Not Discontinued Operations
Commitment And Contingencies [Line Items]
Proceeds from sale of operations and properties												$ 3,750,000,000
Trust account for disposal group, number of net profits interests | source												2
Number of bonds held | bond							2		2
Number of debt instruments held | subsidiary							5		5
Minimum
Commitment And Contingencies [Line Items]
Asset retirement obligation, estimated liability							$ 1,200,000,000		$ 1,200,000,000
Minimum | Apollo Exploration Lawsuit
Commitment And Contingencies [Line Items]
Loss contingency damages sought value						$ 1,100,000,000
Maximum
Commitment And Contingencies [Line Items]
Asset retirement obligation, estimated liability							$ 1,400,000,000		$ 1,400,000,000