Financial Instruments - Energy segments derivatives (Details) - USD ($) $ in Millions	Jun. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Collateral for derivative positions	$ 9	$ 7
Energy Segment
Derivative [Line Items]
Liability derivatives, Gross	(5)	(1)
Commodity Contract \| Energy Segment
Derivative [Line Items]
Asset derivatives, Gross	17
Liability derivatives, Gross	$ 10	$ 5

Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement.

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