Equity Method Investments (Martinez Renewables LLC) (Details) - USD ($) $ in Millions		12 Months Ended
	Sep. 21, 2022	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Sep. 30, 2022
Schedule of Equity Method Investments [Line Items]
Net gain on disposal of assets		$ 1,061	$ 21	$ 70
Proceeds from equity method investment, distribution, return of capital		515	39	$ 137
Equity method investments		$ 6,466	$ 5,409
Martinez Renewables LLC
Schedule of Equity Method Investments [Line Items]
Fair value of assets contributed	$ 1,470
Net gain on disposal of assets	549
Proceeds from equity method investment, distribution, return of capital	500
Equity method investments					$ 971
Martinez Renewables LLC | Neste
Schedule of Equity Method Investments [Line Items]
Payments to acquire interest in joint venture	$ 728