Loans and Leases - Loans by FICO Score, Consumer (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	$ 58,102	$ 54,859
Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and leases	12,253	10,772
Consumer real estate | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	2,938	2,205
Financing receivable, originated year two	2,479	1,690
Financing receivable, originated year three	1,175	1,232
Financing receivable, originated year four	784	763
Financing receivable, originated year five	452	585
Financing receivable, originated prior to year five	2,397	2,333
Revolving loans	1,877	1,701
Revolving Loans converted to term loans	151	263
Loans and leases	12,253	10,772
Consumer real estate | Consumer | FICO score 740 or greater
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	2,154	1,594
Financing receivable, originated year two	1,847	1,156
Financing receivable, originated year three	819	825
Financing receivable, originated year four	523	473
Financing receivable, originated year five	278	394
Financing receivable, originated prior to year five	1,294	1,335
Revolving loans	1,297	1,086
Revolving Loans converted to term loans	63	115
Loans and leases	8,275	6,978
Consumer real estate | Consumer | FICO score 720-739
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	292	236
Financing receivable, originated year two	246	171
Financing receivable, originated year three	116	109
Financing receivable, originated year four	98	61
Financing receivable, originated year five	34	44
Financing receivable, originated prior to year five	238	209
Revolving loans	183	162
Revolving Loans converted to term loans	18	21
Loans and leases	1,225	1,013
Consumer real estate | Consumer | FICO score 700-719
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	242	143
Financing receivable, originated year two	206	112
Financing receivable, originated year three	93	81
Financing receivable, originated year four	55	68
Financing receivable, originated year five	35	45
Financing receivable, originated prior to year five	226	153
Revolving loans	142	141
Revolving Loans converted to term loans	22	23
Loans and leases	1,021	766
Consumer real estate | Consumer | FICO score 660-699
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	214	164
Financing receivable, originated year two	137	131
Financing receivable, originated year three	90	120
Financing receivable, originated year four	55	106
Financing receivable, originated year five	62	44
Financing receivable, originated prior to year five	278	246
Revolving loans	192	204
Revolving Loans converted to term loans	23	44
Loans and leases	1,051	1,059
Consumer real estate | Consumer | FICO score 620-659
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	21	42
Financing receivable, originated year two	24	36
Financing receivable, originated year three	25	55
Financing receivable, originated year four	41	23
Financing receivable, originated year five	20	13
Financing receivable, originated prior to year five	105	118
Revolving loans	47	66
Revolving Loans converted to term loans	9	27
Loans and leases	292	380
Consumer real estate | Consumer | FICO score less than 620
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	15	26
Financing receivable, originated year two	19	84
Financing receivable, originated year three	32	42
Financing receivable, originated year four	12	32
Financing receivable, originated year five	23	45
Financing receivable, originated prior to year five	256	272
Revolving loans	16	42
Revolving Loans converted to term loans	16	33
Loans and leases	389	576
Credit card and other | Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	53	131
Financing receivable, originated year two	30	57
Financing receivable, originated year three	21	47
Financing receivable, originated year four	23	44
Financing receivable, originated year five	13	31
Financing receivable, originated prior to year five	114	155
Revolving loans	576	426
Revolving Loans converted to term loans	10	19
Loans and leases	840	910
Credit card and other | Consumer | FICO score 740 or greater
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	36	56
Financing receivable, originated year two	14	35
Financing receivable, originated year three	10	29
Financing receivable, originated year four	10	23
Financing receivable, originated year five	4	13
Financing receivable, originated prior to year five	25	56
Revolving loans	291	200
Revolving Loans converted to term loans	6	11
Loans and leases	396	423
Credit card and other | Consumer | FICO score 720-739
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	3	14
Financing receivable, originated year two	2	5
Financing receivable, originated year three	2	4
Financing receivable, originated year four	1	3
Financing receivable, originated year five	0	4
Financing receivable, originated prior to year five	4	17
Revolving loans	30	46
Revolving Loans converted to term loans	1	3
Loans and leases	43	96
Credit card and other | Consumer | FICO score 700-719
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	3	8
Financing receivable, originated year two	3	5
Financing receivable, originated year three	1	4
Financing receivable, originated year four	1	4
Financing receivable, originated year five	0	3
Financing receivable, originated prior to year five	4	17
Revolving loans	33	42
Revolving Loans converted to term loans	1	1
Loans and leases	46	84
Credit card and other | Consumer | FICO score 660-699
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	3	25
Financing receivable, originated year two	2	6
Financing receivable, originated year three	1	5
Financing receivable, originated year four	1	6
Financing receivable, originated year five	2	4
Financing receivable, originated prior to year five	7	31
Revolving loans	30	98
Revolving Loans converted to term loans	1	2
Loans and leases	47	177
Credit card and other | Consumer | FICO score 620-659
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	1	4
Financing receivable, originated year two	3	3
Financing receivable, originated year three	1	2
Financing receivable, originated year four	0	4
Financing receivable, originated year five	0	3
Financing receivable, originated prior to year five	3	18
Revolving loans	18	22
Revolving Loans converted to term loans	0	1
Loans and leases	26	57
Credit card and other | Consumer | FICO score less than 620
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, originated year one	7	24
Financing receivable, originated year two	6	3
Financing receivable, originated year three	6	3
Financing receivable, originated year four	10	4
Financing receivable, originated year five	7	4
Financing receivable, originated prior to year five	71	16
Revolving loans	174	18
Revolving Loans converted to term loans	1	1
Loans and leases	$ 282	$ 73