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Financial Instruments - Narrative (Details) bbl in Millions, MMBbls in Millions, BarrelOfButane in Millions		3 Months Ended		6 Months Ended		12 Months Ended
		Jun. 30, 2023 USD ($) BarrelOfButane	Jun. 30, 2022 USD ($)	Jun. 30, 2023 USD ($) BarrelOfButane MMBbls	Jun. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) bbl MMBbls
Derivatives, Fair Value
Unrealized Gain On Derivative Contracts		$ 344,000,000		$ 344,000,000		$ 805,000,000
Deconsolidation of Investment in Auto Plus
Derivatives, Fair Value
Equity investments, Fair value		0		0
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]	327,000,000		327,000,000		$ 805,000,000
Energy Segment
Derivatives, Fair Value
Unrealized Gain On Derivative Contracts		17,000,000		17,000,000
Energy Segment | Not designated as hedging instrument | Cost of Goods and Service Benchmark
Derivatives, Fair Value
(Losses) gains on derivatives not designated as hedging instruments recognized in income		$ (4,000,000)	$ (68,000,000)	$ 41,000,000	$ (66,000,000)
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		63		63		34
[1] Excludes netting of cash collateral received and posted. The total collateral posted at June 30, 2023 and December 31, 2022 was $2,034 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.

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