Financial Instruments - Narrative (Details) bbl in Millions, MMBbls in Millions		3 Months Ended		9 Months Ended		12 Months Ended
		Sep. 30, 2022 USD ($) bbl	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) bbl MMBbls	Sep. 30, 2021 USD ($)	Dec. 31, 2021 USD ($) MMBbls	Dec. 31, 2021 item	Dec. 31, 2021 bbl
Derivatives, Fair Value
Unrealized Gain On Derivative Contracts		$ 1,511,000,000		$ 1,511,000,000		$ 612,000,000
Investment Segment
Derivatives, Fair Value
Fair value of derivative instruments with credit risk related contingent features in a liability position		0		0		0
Investment Segment | Not designated as hedging instrument | Other assets [Member]
Derivatives, Fair Value
Unrealized Gain On Derivative Contracts	[1]	1,499,000,000		1,499,000,000		611,000,000
Energy Segment | Not designated as hedging instrument | Other assets [Member]
Derivatives, Fair Value
Derivative Asset		5,000,000		5,000,000		1,000,000
Unrealized Gain On Derivative Contracts						$ 2,000,000
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		$ 23,000,000	$ (12,000,000)	$ (43,000,000)	$ (46,000,000)
Future Contracts | Maximum
Derivatives, Fair Value
Derivative volume (barrels) | MMBbls				1		1
Forward Contracts | Energy Segment | Not designated as hedging instrument
Derivatives, Fair Value
Derivative, Number of Instruments Held		32		32			0	2

[1] Excludes netting of cash collateral received and posted. The total collateral posted at September 30, 2022 and December 31, 2021 was $1,045 million and $1,906 million, respectively, across all counterparties, which are included in cash held at consolidated affiliated partnerships and restricted cash in the condensed consolidated balance sheets.