Financial and Other Derivative Instruments (Net Cash Collateral Offsetting Arrangements) (Details) - USD ($) $ in Millions	Sep. 30, 2023	Dec. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash collateral netted against Derivative assets	$ 0	$ (90)
Cash collateral netted against Derivative liabilities	12	113
Cash collateral recorded in Accounts receivable	52	77
Cash collateral recorded in Accounts payable	(15)	(27)
Total net cash collateral posted (received)	$ 49	$ 73

Cash Collateral Posted (Received), Net

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- Definition

Amount of obligation to return cash collateral under master netting arrangements offset against derivative assets.

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Amount of obligation to return cash collateral under master netting arrangements that have not been offset against derivative assets.

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Amount of right to receive cash collateral under master netting arrangements offset against derivative liabilities.

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