Financial Instruments - Energy Segments Derivatives (Details) - USD ($) $ in Millions		Dec. 31, 2023	Dec. 31, 2022
Derivative [Line Items]
Derivative Asset, Statement of Financial Position [Extensible Enumeration]	[1]	Unrealized Gain On Derivative Contracts	Unrealized Gain On Derivative Contracts
Derivative liabilities		$ 979	$ 691
Collateral for derivative positions		13	7
Energy
Derivative [Line Items]
Asset derivatives, Gross		(6)
Derivative asset		25
Liability derivatives, Gross		6	(1)
Derivative liabilities			4
Commodity Contracts | Energy
Derivative [Line Items]
Asset derivatives, Gross		31
Liability derivatives, Gross		$ (6)	$ 5

[1] Excludes netting of cash collateral received and posted. The total collateral posted at December 31, 2023 and 2022 was $1,731 million and $1,436 million, respectively, across all counterparties, which are included in cash held at consolidated affiliated partnerships and restricted cash in the consolidated balance sheets.