Derivative and Other Financial Instruments (Schedule of Offsetting Derivative Assets and Liabilities) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Derivative assets
Gross amounts recognized in the Balance Sheet	$ 111	$ 76
Gross amounts not offset in the Balance Sheet	19	11
Net amount	92	65
Derivative liabilities
Gross amounts recognized in the Balance Sheet	33	52
Gross amounts not offset in the Balance Sheet	19	11
Net amount	$ 14	$ 41

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