Loans - Consumer, Excluding Credit Card Loan Portfolio (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Loans and Leases Receivable Disclosure [Line Items]
Retained loans	$ 1,280,870	$ 1,089,598	$ 1,010,206
Consumer, excluding credit card
Loans and Leases Receivable Disclosure [Line Items]
Retained loans	397,275	300,753	$ 295,556
Consumer, excluding credit card | First Republic
Loans and Leases Receivable Disclosure [Line Items]
Retained loans	90,700
Consumer, excluding credit card | Residential real estate
Loans and Leases Receivable Disclosure [Line Items]
Retained loans	326,409	237,561
Consumer, excluding credit card | Residential real estate | First Republic
Loans and Leases Receivable Disclosure [Line Items]
Retained loans	90,700
Consumer, excluding credit card | Auto and other
Loans and Leases Receivable Disclosure [Line Items]
Retained loans	$ 70,866	$ 63,192