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Premises, Equipment and Leasehold Improvements (Depreciation and Amortization Expense) (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Property, Plant and Equipment [Abstract]      
Depreciation $ 899 $ 844 $ 791
Amortization 130 122 115
Total depreciation And amortization $ 1,029 $ 966 $ 906