Allowance for Credit Losses and Credit Quality - Schedule of Amortized Cost Basis of Loans and Leases by Year of Origination (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	$ 2,631,566	$ 7,980,611
Fiscal Year Before Current Fiscal Year	7,984,761	6,575,571
Two Years before Current Fiscal Year	6,498,778	4,384,806
Three Years before Current Fiscal Year	4,271,477	3,079,577
Four Years before Current Fiscal Year	2,854,071	1,950,078
More than Five Years before Current Fiscal Year	5,350,214	3,936,426
Revolving Loans and Leases	6,411,767	6,319,940
Revolving Loans and Leases Converted to Term Loans and Leases	218,385	239,399
Total	36,221,019	34,466,408
Impaired Loans With No Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	143	38,046
Fiscal Year Before Current Fiscal Year	39,566	104,735
Two Years before Current Fiscal Year	121,498	118,588
Three Years before Current Fiscal Year	104,498	103,310
Four Years before Current Fiscal Year	103,421	51,547
More than Five Years before Current Fiscal Year	204,868	157,825
Revolving Loans and Leases	101,304	100,359
Revolving Loans and Leases Converted to Term Loans and Leases	2,603	2,892
Total	677,901	677,302
Commercial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,854,354	5,734,281
Fiscal Year Before Current Fiscal Year	5,569,528	5,092,505
Two Years before Current Fiscal Year	5,248,761	3,521,993
Three Years before Current Fiscal Year	3,534,609	2,413,072
Four Years before Current Fiscal Year	2,298,129	1,356,381
More than Five Years before Current Fiscal Year	3,156,115	2,067,914
Revolving Loans and Leases	3,822,927	3,525,576
Revolving Loans and Leases Converted to Term Loans and Leases	210,245	230,479
Total	25,694,668	23,942,201
Commercial | Equipment Leased to Other Party
Financing Receivable, Credit Quality Indicator [Line Items]
Revolving Loans and Leases Converted to Term Loans and Leases	210,200	230,500
Commercial | Impaired Loans With Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	2,160
Fiscal Year Before Current Fiscal Year	2,113	1,025
Two Years before Current Fiscal Year	1,248	774
Three Years before Current Fiscal Year	1,022	476
Four Years before Current Fiscal Year	678	392
More than Five Years before Current Fiscal Year	522	213
Revolving Loans and Leases	1,923	375
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	7,506	5,415
Commercial | Impaired Loans With No Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	121	34,493
Fiscal Year Before Current Fiscal Year	35,379	93,842
Two Years before Current Fiscal Year	112,582	101,486
Three Years before Current Fiscal Year	91,793	98,478
Four Years before Current Fiscal Year	99,479	47,937
More than Five Years before Current Fiscal Year	143,964	86,146
Revolving Loans and Leases	37,191	40,364
Revolving Loans and Leases Converted to Term Loans and Leases	1,856	1,954
Total	522,365	504,700
Commercial | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,298,855	3,324,560
Fiscal Year Before Current Fiscal Year	3,122,493	2,013,463
Two Years before Current Fiscal Year	2,111,441	1,134,482
Three Years before Current Fiscal Year	1,171,098	631,145
Four Years before Current Fiscal Year	603,328	415,172
More than Five Years before Current Fiscal Year	706,363	352,585
Revolving Loans and Leases	3,790,558	3,501,763
Revolving Loans and Leases Converted to Term Loans and Leases	52,565	49,213
Total	12,856,701	11,422,383
Commercial | Commercial and industrial | Impaired Loans With Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	874
Fiscal Year Before Current Fiscal Year	420	50
Two Years before Current Fiscal Year	163	94
Three Years before Current Fiscal Year	0	13
Four Years before Current Fiscal Year	4	0
More than Five Years before Current Fiscal Year	262	52
Revolving Loans and Leases	1,923	375
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	2,772	1,458
Commercial | Commercial and industrial | Impaired Loans With No Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	121	26,109
Fiscal Year Before Current Fiscal Year	27,464	61,595
Two Years before Current Fiscal Year	58,160	60,686
Three Years before Current Fiscal Year	51,542	29,360
Four Years before Current Fiscal Year	25,885	17,669
More than Five Years before Current Fiscal Year	39,613	23,644
Revolving Loans and Leases	37,191	40,364
Revolving Loans and Leases Converted to Term Loans and Leases	11	12
Total	239,987	259,439
Commercial | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	306,382	1,385,857
Fiscal Year Before Current Fiscal Year	1,452,463	2,324,804
Two Years before Current Fiscal Year	2,406,227	1,962,391
Three Years before Current Fiscal Year	1,937,607	1,534,089
Four Years before Current Fiscal Year	1,465,984	820,373
More than Five Years before Current Fiscal Year	2,312,678	1,675,073
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	9,881,341	9,702,587
Commercial | Commercial real estate | Impaired Loans With Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	0	0
More than Five Years before Current Fiscal Year	0	22
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	0	22
Commercial | Commercial real estate | Impaired Loans With No Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	5,194
Fiscal Year Before Current Fiscal Year	4,309	4,835
Two Years before Current Fiscal Year	25,233	14,452
Three Years before Current Fiscal Year	13,738	53,934
Four Years before Current Fiscal Year	57,547	21,667
More than Five Years before Current Fiscal Year	87,593	54,357
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	188,420	154,439
Commercial | Lease financing
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	249,117	1,023,864
Fiscal Year Before Current Fiscal Year	994,572	754,238
Two Years before Current Fiscal Year	731,093	425,120
Three Years before Current Fiscal Year	425,904	247,838
Four Years before Current Fiscal Year	228,817	120,836
More than Five Years before Current Fiscal Year	137,074	40,256
Revolving Loans and Leases	32,369	23,813
Revolving Loans and Leases Converted to Term Loans and Leases	157,680	181,266
Total	2,956,626	2,817,231
Commercial | Lease financing | Impaired Loans With Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	1,286
Fiscal Year Before Current Fiscal Year	1,693	975
Two Years before Current Fiscal Year	1,085	680
Three Years before Current Fiscal Year	1,022	463
Four Years before Current Fiscal Year	674	392
More than Five Years before Current Fiscal Year	260	139
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	4,734	3,935
Commercial | Lease financing | Impaired Loans With No Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	3,190
Fiscal Year Before Current Fiscal Year	3,606	27,412
Two Years before Current Fiscal Year	29,189	26,348
Three Years before Current Fiscal Year	26,513	15,184
Four Years before Current Fiscal Year	16,047	8,601
More than Five Years before Current Fiscal Year	16,758	8,145
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	1,845	1,942
Total	93,958	90,822
Consumer
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	777,212	2,246,330
Fiscal Year Before Current Fiscal Year	2,415,233	1,483,066
Two Years before Current Fiscal Year	1,250,017	862,813
Three Years before Current Fiscal Year	736,868	666,505
Four Years before Current Fiscal Year	555,942	593,697
More than Five Years before Current Fiscal Year	2,194,099	1,868,512
Revolving Loans and Leases	2,588,840	2,794,364
Revolving Loans and Leases Converted to Term Loans and Leases	8,140	8,920
Total	10,526,351	10,524,207
Consumer | Impaired Loans With Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	85
Fiscal Year Before Current Fiscal Year	85	134
Two Years before Current Fiscal Year	312	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	258	0
More than Five Years before Current Fiscal Year	1,275	1,773
Revolving Loans and Leases	0	36
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	1,930	2,028
Consumer | Impaired Loans With No Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	22	3,553
Fiscal Year Before Current Fiscal Year	4,187	10,893
Two Years before Current Fiscal Year	8,916	17,102
Three Years before Current Fiscal Year	12,705	4,832
Four Years before Current Fiscal Year	3,942	3,610
More than Five Years before Current Fiscal Year	60,904	71,679
Revolving Loans and Leases	64,113	59,995
Revolving Loans and Leases Converted to Term Loans and Leases	747	938
Total	155,536	172,602
Consumer | Residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	710,828	2,015,083
Fiscal Year Before Current Fiscal Year	2,210,511	1,057,046
Two Years before Current Fiscal Year	868,883	621,395
Three Years before Current Fiscal Year	521,935	440,218
Four Years before Current Fiscal Year	364,867	443,630
More than Five Years before Current Fiscal Year	1,833,957	1,604,673
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	6,510,981	6,182,045
Consumer | Residential mortgage | Impaired Loans With Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	85
Fiscal Year Before Current Fiscal Year	85	134
Two Years before Current Fiscal Year	312	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	202	0
More than Five Years before Current Fiscal Year	1,275	1,746
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	1,874	1,965
Consumer | Residential mortgage | Impaired Loans With No Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	2,631
Fiscal Year Before Current Fiscal Year	3,253	9,177
Two Years before Current Fiscal Year	7,744	16,391
Three Years before Current Fiscal Year	11,920	4,172
Four Years before Current Fiscal Year	2,996	2,812
More than Five Years before Current Fiscal Year	50,620	62,470
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	76,533	97,653
Consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,384	24,006
Fiscal Year Before Current Fiscal Year	21,485	52,917
Two Years before Current Fiscal Year	45,090	48,671
Three Years before Current Fiscal Year	42,621	40,349
Four Years before Current Fiscal Year	34,861	29,495
More than Five Years before Current Fiscal Year	142,847	134,501
Revolving Loans and Leases	2,567,776	2,769,944
Revolving Loans and Leases Converted to Term Loans and Leases	8,078	8,853
Total	2,864,142	3,108,736
Consumer | Home equity | Impaired Loans With Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	56	0
More than Five Years before Current Fiscal Year	0	27
Revolving Loans and Leases	0	36
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	56	63
Consumer | Home equity | Impaired Loans With No Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	22	889
Fiscal Year Before Current Fiscal Year	847	1,449
Two Years before Current Fiscal Year	934	530
Three Years before Current Fiscal Year	445	379
Four Years before Current Fiscal Year	432	223
More than Five Years before Current Fiscal Year	5,594	5,149
Revolving Loans and Leases	63,920	59,826
Revolving Loans and Leases Converted to Term Loans and Leases	747	938
Total	72,941	69,383
Consumer | Consumer installment
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	65,000	207,241
Fiscal Year Before Current Fiscal Year	183,237	373,103
Two Years before Current Fiscal Year	336,044	192,747
Three Years before Current Fiscal Year	172,312	185,938
Four Years before Current Fiscal Year	156,214	120,572
More than Five Years before Current Fiscal Year	217,295	129,338
Revolving Loans and Leases	21,064	24,420
Revolving Loans and Leases Converted to Term Loans and Leases	62	67
Total	1,151,228	1,233,426
Consumer | Consumer installment | Impaired Loans With Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	0
Fiscal Year Before Current Fiscal Year	0	0
Two Years before Current Fiscal Year	0	0
Three Years before Current Fiscal Year	0	0
Four Years before Current Fiscal Year	0	0
More than Five Years before Current Fiscal Year	0	0
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	0	0
Consumer | Consumer installment | Impaired Loans With No Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	33
Fiscal Year Before Current Fiscal Year	87	267
Two Years before Current Fiscal Year	238	181
Three Years before Current Fiscal Year	340	281
Four Years before Current Fiscal Year	514	575
More than Five Years before Current Fiscal Year	4,690	4,060
Revolving Loans and Leases	193	169
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	6,062	5,566
Pass | Commercial | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,289,456	3,282,275
Fiscal Year Before Current Fiscal Year	3,069,589	1,877,468
Two Years before Current Fiscal Year	1,924,724	994,081
Three Years before Current Fiscal Year	1,033,717	547,940
Four Years before Current Fiscal Year	527,205	357,567
More than Five Years before Current Fiscal Year	618,661	316,557
Revolving Loans and Leases	3,541,892	3,286,687
Revolving Loans and Leases Converted to Term Loans and Leases	51,531	48,079
Total	12,056,775	10,710,654
Pass | Commercial | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	304,562	1,361,117
Fiscal Year Before Current Fiscal Year	1,373,808	2,193,489
Two Years before Current Fiscal Year	2,274,851	1,877,374
Three Years before Current Fiscal Year	1,767,581	1,211,426
Four Years before Current Fiscal Year	1,169,172	683,612
More than Five Years before Current Fiscal Year	2,021,114	1,480,027
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	8,911,088	8,807,045
Pass | Commercial | Lease financing
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	247,246	1,013,374
Fiscal Year Before Current Fiscal Year	970,143	715,327
Two Years before Current Fiscal Year	686,909	393,644
Three Years before Current Fiscal Year	389,597	226,818
Four Years before Current Fiscal Year	205,845	109,992
More than Five Years before Current Fiscal Year	115,862	30,620
Revolving Loans and Leases	32,369	23,806
Revolving Loans and Leases Converted to Term Loans and Leases	148,755	167,726
Total	2,796,726	2,681,307
Pass | Consumer | Residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	710,828	2,011,791
Fiscal Year Before Current Fiscal Year	2,207,173	1,047,735
Two Years before Current Fiscal Year	860,827	604,127
Three Years before Current Fiscal Year	510,015	435,617
Four Years before Current Fiscal Year	361,669	439,816
More than Five Years before Current Fiscal Year	1,780,396	1,539,779
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	6,430,908	6,078,865
Pass | Consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,362	23,066
Fiscal Year Before Current Fiscal Year	20,638	51,448
Two Years before Current Fiscal Year	44,156	48,092
Three Years before Current Fiscal Year	42,176	39,834
Four Years before Current Fiscal Year	34,373	29,071
More than Five Years before Current Fiscal Year	135,924	126,147
Revolving Loans and Leases	2,503,856	2,703,354
Revolving Loans and Leases Converted to Term Loans and Leases	7,331	7,753
Total	2,789,816	3,028,765
Pass | Consumer | Consumer installment
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	65,000	206,994
Fiscal Year Before Current Fiscal Year	183,103	371,924
Two Years before Current Fiscal Year	335,641	192,067
Three Years before Current Fiscal Year	171,972	185,051
Four Years before Current Fiscal Year	155,700	119,663
More than Five Years before Current Fiscal Year	212,480	127,252
Revolving Loans and Leases	20,871	24,043
Revolving Loans and Leases Converted to Term Loans and Leases	62	67
Total	1,144,829	1,227,061
Special Mention | Commercial | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	6,898	13,377
Fiscal Year Before Current Fiscal Year	16,592	66,485
Two Years before Current Fiscal Year	87,857	46,174
Three Years before Current Fiscal Year	75,921	34,959
Four Years before Current Fiscal Year	42,692	4,661
More than Five Years before Current Fiscal Year	10,888	6,733
Revolving Loans and Leases	147,237	94,338
Revolving Loans and Leases Converted to Term Loans and Leases	754	858
Total	388,839	267,585
Special Mention | Commercial | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	81	17,745
Fiscal Year Before Current Fiscal Year	17,878	78,236
Two Years before Current Fiscal Year	88,125	53,087
Three Years before Current Fiscal Year	83,486	197,935
Four Years before Current Fiscal Year	214,000	79,540
More than Five Years before Current Fiscal Year	175,698	104,473
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	579,268	531,016
Special Mention | Commercial | Lease financing
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	848	4,050
Fiscal Year Before Current Fiscal Year	14,307	9,871
Two Years before Current Fiscal Year	8,802	3,897
Three Years before Current Fiscal Year	5,459	4,870
Four Years before Current Fiscal Year	4,670	1,484
More than Five Years before Current Fiscal Year	2,461	1,001
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	4,586	8,911
Total	41,133	34,084
Special Mention | Consumer | Residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		0
Fiscal Year Before Current Fiscal Year		0
Two Years before Current Fiscal Year		0
Three Years before Current Fiscal Year		0
Four Years before Current Fiscal Year		0
More than Five Years before Current Fiscal Year		112
Revolving Loans and Leases		0
Revolving Loans and Leases Converted to Term Loans and Leases		0
Total		112
Special Mention | Consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		0
Fiscal Year Before Current Fiscal Year		0
Two Years before Current Fiscal Year		0
Three Years before Current Fiscal Year		0
Four Years before Current Fiscal Year		0
More than Five Years before Current Fiscal Year		0
Revolving Loans and Leases		0
Revolving Loans and Leases Converted to Term Loans and Leases		0
Total		0
Special Mention | Consumer | Consumer installment
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year		0
Fiscal Year Before Current Fiscal Year		0
Two Years before Current Fiscal Year		0
Three Years before Current Fiscal Year		0
Four Years before Current Fiscal Year		0
More than Five Years before Current Fiscal Year		0
Revolving Loans and Leases		0
Revolving Loans and Leases Converted to Term Loans and Leases		0
Total		0
Substandard | Commercial | Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	2,501	28,908
Fiscal Year Before Current Fiscal Year	36,312	69,510
Two Years before Current Fiscal Year	98,860	94,227
Three Years before Current Fiscal Year	61,460	48,246
Four Years before Current Fiscal Year	33,431	52,944
More than Five Years before Current Fiscal Year	76,814	29,295
Revolving Loans and Leases	101,429	120,738
Revolving Loans and Leases Converted to Term Loans and Leases	280	276
Total	411,087	444,144
Substandard | Commercial | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,739	6,995
Fiscal Year Before Current Fiscal Year	60,777	53,079
Two Years before Current Fiscal Year	43,251	31,930
Three Years before Current Fiscal Year	86,540	124,728
Four Years before Current Fiscal Year	82,812	57,221
More than Five Years before Current Fiscal Year	115,866	90,573
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	390,985	364,526
Substandard | Commercial | Lease financing
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	1,023	6,440
Fiscal Year Before Current Fiscal Year	10,122	29,040
Two Years before Current Fiscal Year	35,382	27,579
Three Years before Current Fiscal Year	30,848	16,150
Four Years before Current Fiscal Year	18,302	9,360
More than Five Years before Current Fiscal Year	18,751	8,635
Revolving Loans and Leases	0	7
Revolving Loans and Leases Converted to Term Loans and Leases	4,339	4,629
Total	118,767	101,840
Substandard | Consumer | Residential mortgage
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	3,292
Fiscal Year Before Current Fiscal Year	3,338	9,311
Two Years before Current Fiscal Year	8,056	17,268
Three Years before Current Fiscal Year	11,920	4,601
Four Years before Current Fiscal Year	3,198	3,814
More than Five Years before Current Fiscal Year	53,561	64,782
Revolving Loans and Leases	0	0
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	80,073	103,068
Substandard | Consumer | Home equity
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	22	940
Fiscal Year Before Current Fiscal Year	847	1,469
Two Years before Current Fiscal Year	934	579
Three Years before Current Fiscal Year	445	515
Four Years before Current Fiscal Year	488	424
More than Five Years before Current Fiscal Year	6,923	8,354
Revolving Loans and Leases	63,920	66,590
Revolving Loans and Leases Converted to Term Loans and Leases	747	1,100
Total	74,326	79,971
Substandard | Consumer | Consumer installment
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	247
Fiscal Year Before Current Fiscal Year	134	1,179
Two Years before Current Fiscal Year	403	680
Three Years before Current Fiscal Year	340	887
Four Years before Current Fiscal Year	514	909
More than Five Years before Current Fiscal Year	4,815	2,086
Revolving Loans and Leases	193	377
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	6,399	6,365
Financial Asset, Equal to or Greater than 90 Days Past Due | Impaired Loans With Valuation Allowance
Financing Receivable, Credit Quality Indicator [Line Items]
Current Fiscal Year	0	2,245
Fiscal Year Before Current Fiscal Year	2,198	1,159
Two Years before Current Fiscal Year	1,560	774
Three Years before Current Fiscal Year	1,022	476
Four Years before Current Fiscal Year	936	392
More than Five Years before Current Fiscal Year	1,797	1,986
Revolving Loans and Leases	1,923	411
Revolving Loans and Leases Converted to Term Loans and Leases	0	0
Total	$ 9,436	$ 7,443