Loans and Leases - Loans by FICO Score, Consumer (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 62,565	$ 61,292
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	14,047	13,650
Consumer | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	1,454	2,130
Financing receivable, originated year two	2,022	2,854
Financing receivable, originated year three	2,715	2,291
Financing receivable, originated year four	2,119	1,043
Financing receivable, originated year five	959	706
Financing receivable, originated prior to year five	2,686	2,407
Revolving Loans	1,956	2,101
Revolving Loans Converted to Term Loans	136	118
Loans and leases	14,047	13,650
Consumer | Credit card and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	40	80
Financing receivable, originated year two	38	46
Financing receivable, originated year three	19	20
Financing receivable, originated year four	9	16
Financing receivable, originated year five	6	19
Financing receivable, originated prior to year five	106	150
Revolving Loans	436	454
Revolving Loans Converted to Term Loans	15	8
Loans and leases	669	793
FICO score 740 or greater | Consumer | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	1,045	1,572
Financing receivable, originated year two	1,493	2,099
Financing receivable, originated year three	2,009	1,720
Financing receivable, originated year four	1,592	730
Financing receivable, originated year five	675	465
Financing receivable, originated prior to year five	1,554	1,332
Revolving Loans	1,430	1,522
Revolving Loans Converted to Term Loans	56	50
Loans and leases	9,854	9,490
FICO score 740 or greater | Consumer | Credit card and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	21	52
Financing receivable, originated year two	22	26
Financing receivable, originated year three	10	10
Financing receivable, originated year four	4	5
Financing receivable, originated year five	2	3
Financing receivable, originated prior to year five	19	27
Revolving Loans	197	207
Revolving Loans Converted to Term Loans	8	5
Loans and leases	283	335
FICO score 720-739 | Consumer | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	149	205
Financing receivable, originated year two	197	286
Financing receivable, originated year three	270	227
Financing receivable, originated year four	213	107
Financing receivable, originated year five	99	88
Financing receivable, originated prior to year five	271	230
Revolving Loans	175	192
Revolving Loans Converted to Term Loans	17	15
Loans and leases	1,391	1,350
FICO score 720-739 | Consumer | Credit card and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	7	5
Financing receivable, originated year two	3	3
Financing receivable, originated year three	1	1
Financing receivable, originated year four	1	1
Financing receivable, originated year five	0	1
Financing receivable, originated prior to year five	3	5
Revolving Loans	20	24
Revolving Loans Converted to Term Loans	2	1
Loans and leases	37	41
FICO score 700-719 | Consumer | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	98	154
Financing receivable, originated year two	140	232
Financing receivable, originated year three	217	193
Financing receivable, originated year four	175	81
Financing receivable, originated year five	72	52
Financing receivable, originated prior to year five	242	224
Revolving Loans	150	159
Revolving Loans Converted to Term Loans	18	17
Loans and leases	1,112	1,112
FICO score 700-719 | Consumer | Credit card and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	1	5
Financing receivable, originated year two	2	4
Financing receivable, originated year three	2	1
Financing receivable, originated year four	0	1
Financing receivable, originated year five	0	1
Financing receivable, originated prior to year five	2	4
Revolving Loans	14	25
Revolving Loans Converted to Term Loans	0	1
Loans and leases	21	42
FICO score 660-699 | Consumer | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	133	170
Financing receivable, originated year two	160	198
Financing receivable, originated year three	183	113
Financing receivable, originated year four	100	83
Financing receivable, originated year five	75	53
Financing receivable, originated prior to year five	294	290
Revolving Loans	146	168
Revolving Loans Converted to Term Loans	25	18
Loans and leases	1,116	1,093
FICO score 660-699 | Consumer | Credit card and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	1	4
Financing receivable, originated year two	2	3
Financing receivable, originated year three	1	1
Financing receivable, originated year four	0	1
Financing receivable, originated year five	0	1
Financing receivable, originated prior to year five	3	8
Revolving Loans	15	23
Revolving Loans Converted to Term Loans	4	0
Loans and leases	26	41
FICO score 620-659 | Consumer | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	11	11
Financing receivable, originated year two	10	20
Financing receivable, originated year three	17	23
Financing receivable, originated year four	21	22
Financing receivable, originated year five	20	36
Financing receivable, originated prior to year five	122	106
Revolving Loans	30	36
Revolving Loans Converted to Term Loans	9	7
Loans and leases	240	261
FICO score 620-659 | Consumer | Credit card and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	2	2
Financing receivable, originated year two	1	1
Financing receivable, originated year three	0	1
Financing receivable, originated year four	0	0
Financing receivable, originated year five	0	0
Financing receivable, originated prior to year five	1	3
Revolving Loans	9	7
Revolving Loans Converted to Term Loans	0	0
Loans and leases	13	14
FICO score less than 620 | Consumer | Consumer real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	18	18
Financing receivable, originated year two	22	19
Financing receivable, originated year three	19	15
Financing receivable, originated year four	18	20
Financing receivable, originated year five	18	12
Financing receivable, originated prior to year five	203	225
Revolving Loans	25	24
Revolving Loans Converted to Term Loans	11	11
Loans and leases	334	344
FICO score less than 620 | Consumer | Credit card and other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	8	12
Financing receivable, originated year two	8	9
Financing receivable, originated year three	5	6
Financing receivable, originated year four	4	8
Financing receivable, originated year five	4	13
Financing receivable, originated prior to year five	78	103
Revolving Loans	181	168
Revolving Loans Converted to Term Loans	1	1
Loans and leases	$ 289	$ 320