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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

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