Financial and Other Derivative Instruments (Net Cash Collateral Offsetting Arrangements) (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Cash collateral netted against Derivative assets	$ (367)	$ (90)
Cash collateral netted against Derivative liabilities	424	48
Cash collateral recorded in Accounts receivable	123	55
Cash collateral recorded in Accounts payable	(55)	(21)
Total net cash collateral posted (received)	$ 125	$ (8)

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