LAWSUITS, CLAIMS, COMMITMENTS AND CONTINGENCIES (Details) $ in Millions		1 Months Ended					3 Months Ended	9 Months Ended		12 Months Ended
	Aug. 01, 2023 USD ($)	Oct. 31, 2023 USD ($)	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($) party	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Jun. 30, 2023 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2017	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($)
Lawsuits, commitments and contingencies
Tentative cash tax refund								$ 12	$ 89
Federal
Lawsuits, commitments and contingencies
Potential cash tax								1,400
State
Lawsuits, commitments and contingencies
Potential cash tax								28
Anadarko
Lawsuits, commitments and contingencies
Tentative cash tax refund											$ 881
Potential accrued interest								534
Alden Leeds
Lawsuits, commitments and contingencies
Number of parties, settled | party				85
Environmental remediation costs, released				$ 150
Arbitration filed by Andes Petroleum Ecuador Ltd
Lawsuits, commitments and contingencies
Proceeds from settlement											$ 1,000
Recovery of amount awarded in settlement amount (as a percent)											60.00%
Percentage of judgment amount claimed										40.00%
Own economic interest (as a percent)										60.00%
Amount awarded to other party in litigation					$ 558	$ 391
Litigation settlement interest			$ 166
Maxus Filed Bankruptcy
Lawsuits, commitments and contingencies
Proceeds from settlement	$ 350
Amount awarded from other party in litigation	$ 575
Gains related to legal settlements							$ 260	$ 260
Maxus Filed Bankruptcy | Subsequent Event
Lawsuits, commitments and contingencies
Proceeds from settlement		$ 341
Tronox Settlement
Lawsuits, commitments and contingencies
Payments for settlement												$ 5,200