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Deposits - (Categories) (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Other Liabilities Disclosure [Abstract]    
Noninterest-bearing demand $ 41,053 $ 32,494
Savings and money market 40,114 34,571
Time 1,622 2,588
Total deposits $ 82,789 $ 69,653