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Income Taxes (Amounts Recognized for Tax Related Interest and Penalties) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Income Tax Disclosure [Abstract]      
Interest and penalties recognized in the Consolidated Statements of Operations $ 7 $ 8 $ 4
Interest and penalties recognized in liabilities in the Consolidated Statements of Financial Position $ 22 $ 15