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INVESTMENT IN UNCONSOLIDATED SUBSIDIARY AND RELATED PARTY TRANSACTIONS - Narrative (Details) MT in Millions, $ in Millions	1 Months Ended		3 Months Ended		12 Months Ended
	Mar. 31, 2024 USD ($)	Aug. 31, 2022 USD ($) installment MT	Mar. 31, 2024 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Dec. 31, 2023 USD ($)
Schedule of Equity Method Investments [Line Items]
Contingent liability (related to Carbon TerraVault JV put and call rights)	$ 253		$ 253			$ 201
Related Party
Schedule of Equity Method Investments [Line Items]
Contingent liability (related to Carbon TerraVault JV put and call rights)	99		99			52
Carbon TerraVault JV
Schedule of Equity Method Investments [Line Items]
Interest in joint venture		51.00%
Carbon TerraVault JV | Related Party
Schedule of Equity Method Investments [Line Items]
Contingent liability (related to Carbon TerraVault JV put and call rights)	99		99			$ 52
Carbon TerraVault JV | Brookfield
Schedule of Equity Method Investments [Line Items]
Interest in joint venture		49.00%
Committed amount		$ 500
Initial investment		$ 137
Number of installments | installment		3
Number of installments subject to certain milestones | installment		2
Contribution from noncontrolling interest	$ 46				$ 46
Metric tons of carbon per annum | MT		5
Elk Hills
Schedule of Equity Method Investments [Line Items]
Reimbursement for abandonment work			$ 4	$ 1

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