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Long-Term Debt (Schedule of Long-Term Debt) (Details) - USD ($)
$ in Millions
Dec. 31, 2022
Dec. 31, 2021
Long-Term Debt, Unclassified [Abstract]    
Subordinated notes $ 519 $ 590
Senior notes 128 418
Finance lease obligations 4 4
Total $ 651 $ 1,012