Annual report [Section 13 and 15(d), not S-K Item 405]

Outstanding Loans and Leases and Allowance for Credit Losses - Consumer Real Estate - TDRs Entered into During the Period (Details)

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Outstanding Loans and Leases and Allowance for Credit Losses - Consumer Real Estate - TDRs Entered into During the Period (Details) - Consumer real estate
$ in Millions
 12 Months Ended
Dec. 31, 2022
USD ($)
Financing Receivable, Modified [Line Items]  
Financing Receivable, Modifications, Post-Modification, Unpaid Principal Balance $ 1,382
Carrying value $ 1,206
Financing Receivable, Modifications, Pre-Modification Interest Rate 3.71%
Post-Modification Interest Rate 3.62%
Residential Mortgage  
Financing Receivable, Modified [Line Items]  
Financing Receivable, Modifications, Post-Modification, Unpaid Principal Balance $ 1,144
Carrying value $ 1,015
Financing Receivable, Modifications, Pre-Modification Interest Rate 3.52%
Post-Modification Interest Rate 3.40%
Home equity  
Financing Receivable, Modified [Line Items]  
Financing Receivable, Modifications, Post-Modification, Unpaid Principal Balance $ 238
Carrying value $ 191
Financing Receivable, Modifications, Pre-Modification Interest Rate 4.61%
Post-Modification Interest Rate 4.65%