Financial Instruments - Narrative (Details) bbl in Millions		3 Months Ended
		Mar. 31, 2023 USD ($) bbl	Mar. 31, 2022 USD ($)	Dec. 31, 2022 USD ($) bbl
Derivatives, Fair Value
Unrealized Gain On Derivative Contracts		$ 363,000,000		$ 812,000,000
Deconsolidation of Investment in Auto Plus
Derivatives, Fair Value
Equity investments, Fair value		0
Investment Segment
Derivatives, Fair Value
Fair value of derivative instruments with credit risk related contingent features in a liability position		0		0
Investment Segment | Not designated as hedging instrument | Other assets [Member]
Derivatives, Fair Value
Unrealized Gain On Derivative Contracts	[1]	334,000,000		$ 805,000,000
Energy Segment
Derivatives, Fair Value
Unrealized Gain On Derivative Contracts		29,000,000
Energy Segment | Not designated as hedging instrument | Cost of Goods and Service Benchmark
Derivatives, Fair Value
Gain (loss) on derivatives not designated as hedging instruments recognized in income		$ 45,000,000	$ 2,000,000
Forward Contracts | Energy Segment | Not designated as hedging instrument
Derivatives, Fair Value
Derivative, Number of Instruments Held | bbl		43		34

[1] Excludes netting of cash collateral received and posted. The total collateral posted at March 31, 2023 and December 31, 2022 was $1,816 million and $1,436 million, respectively, across all counterparties, which are included in cash held at consolidated affiliated partnerships and restricted cash in the condensed consolidated balance sheets.