Loans, Credit Quality Indicator by Vintage Year (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	$ 24,802	$ 53,246
Financing Receivable, Revolving	3,077,153	2,915,297
Financing Receivable, Originated in Current Fiscal Year	3,882,762	8,854,510
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,966,452	7,341,574
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,922,289	3,469,992
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,147,851	2,201,004
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,953,292	1,082,280
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,243,388	2,934,912
Total	30,193,187	28,799,569
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	6,124
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	655
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	9,369
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	13,897
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	6,077
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	45
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	4,724
Charge offs	40,891
Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,894	47,152
Financing Receivable, Revolving	2,977,046	2,795,551
Financing Receivable, Originated in Current Fiscal Year	3,850,688	8,711,468
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	7,781,993	7,226,734
Financing Receivable, Originated Two Years before Latest Fiscal Year	5,784,640	3,377,725
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,021,848	2,101,861
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,859,031	1,047,522
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	4,078,136	2,834,303
Total	29,353,382	28,095,164
Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	398	52
Financing Receivable, Revolving	27,442	93,801
Financing Receivable, Originated in Current Fiscal Year	10,039	66,443
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	97,273	48,159
Financing Receivable, Originated Two Years before Latest Fiscal Year	43,132	20,772
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,126	43,983
Financing Receivable, Originated Four Years before Latest Fiscal Year	69,595	9,778
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	32,288	43,350
Total	285,895	326,286
Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	841	447
Financing Receivable, Revolving	72,533	25,889
Financing Receivable, Originated in Current Fiscal Year	7,485	59,240
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	58,600	36,709
Financing Receivable, Originated Two Years before Latest Fiscal Year	65,716	56,016
Financing Receivable, Originated Three Years before Latest Fiscal Year	90,583	51,043
Financing Receivable, Originated Four Years before Latest Fiscal Year	17,536	19,637
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	72,899	18,118
Total	385,352	266,651
Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	15,669	5,595
Financing Receivable, Revolving	133	56
Financing Receivable, Originated in Current Fiscal Year	14,549	17,360
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	28,585	29,972
Financing Receivable, Originated Two Years before Latest Fiscal Year	28,801	15,479
Financing Receivable, Originated Three Years before Latest Fiscal Year	29,295	4,116
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,129	5,343
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	60,065	39,141
Total	168,558	111,467
Total commercial
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	16,101	44,208
Financing Receivable, Revolving	2,368,474	2,206,480
Financing Receivable, Originated in Current Fiscal Year	2,691,023	6,122,430
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,161,357	5,034,805
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,650,628	1,741,955
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,552,123	1,370,245
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,182,797	698,550
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,897,334	812,278
Total	18,503,736	17,986,742
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	2,760
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	401
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	5,695
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	13,264
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	5,900
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	4,062
Charge offs	32,082
Total commercial | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	477	39,835
Financing Receivable, Revolving	2,269,121	2,087,396
Financing Receivable, Originated in Current Fiscal Year	2,660,154	5,990,879
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	4,985,172	4,924,743
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,521,028	1,656,149
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,433,889	1,275,996
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,096,114	669,213
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,782,480	750,399
Total	17,747,957	17,354,774
Total commercial | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	39	0
Financing Receivable, Revolving	26,821	93,209
Financing Receivable, Originated in Current Fiscal Year	9,439	65,379
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	95,797	47,756
Financing Receivable, Originated Two Years before Latest Fiscal Year	42,727	20,671
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,112	43,978
Financing Receivable, Originated Four Years before Latest Fiscal Year	69,538	9,732
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	31,744	42,952
Total	282,178	323,677
Total commercial | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	829	447
Financing Receivable, Revolving	72,533	25,874
Financing Receivable, Originated in Current Fiscal Year	7,485	58,785
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	58,521	36,638
Financing Receivable, Originated Two Years before Latest Fiscal Year	65,716	56,016
Financing Receivable, Originated Three Years before Latest Fiscal Year	90,506	50,271
Financing Receivable, Originated Four Years before Latest Fiscal Year	17,144	19,606
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	71,963	17,287
Total	383,869	264,476
Total commercial | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	14,756	3,926
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	13,945	7,387
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	21,868	25,668
Financing Receivable, Originated Two Years before Latest Fiscal Year	21,158	9,119
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,617	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	11,146	1,640
Total	89,732	43,814
Total commercial | Commercial and Industrial Sector
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	16,101	5,796
Financing Receivable, Revolving	2,164,649	2,056,535
Financing Receivable, Originated in Current Fiscal Year	1,790,062	3,295,567
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,627,650	2,394,809
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,513,027	598,839
Financing Receivable, Originated Three Years before Latest Fiscal Year	595,254	611,289
Financing Receivable, Originated Four Years before Latest Fiscal Year	486,300	330,879
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	922,126	471,535
Total	10,099,068	9,759,454
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	2,760
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	401
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	5,695
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	13,264
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	5,900
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	3,795
Charge offs	31,816
Total commercial | Commercial and Industrial Sector | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	477	1,423
Financing Receivable, Revolving	2,065,717	1,938,777
Financing Receivable, Originated in Current Fiscal Year	1,775,767	3,245,546
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,516,155	2,367,008
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,427,787	567,833
Financing Receivable, Originated Three Years before Latest Fiscal Year	549,748	573,120
Financing Receivable, Originated Four Years before Latest Fiscal Year	481,866	330,642
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	895,313	432,906
Total	9,712,353	9,455,833
Total commercial | Commercial and Industrial Sector | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	39	0
Financing Receivable, Revolving	26,400	93,209
Financing Receivable, Originated in Current Fiscal Year	39	3,411
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	39,694	23,607
Financing Receivable, Originated Two Years before Latest Fiscal Year	8,731	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	3,667	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	19
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	26,136	32,497
Total	104,666	152,744
Total commercial | Commercial and Industrial Sector | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	829	447
Financing Receivable, Revolving	72,533	24,549
Financing Receivable, Originated in Current Fiscal Year	311	41,400
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	51,502	4,193
Financing Receivable, Originated Two Years before Latest Fiscal Year	57,611	21,887
Financing Receivable, Originated Three Years before Latest Fiscal Year	20,222	38,169
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,434	218
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	623	6,133
Total	207,237	136,549
Total commercial | Commercial and Industrial Sector | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	14,756	3,926
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	13,945	5,210
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	20,299	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	18,898	9,119
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,617	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	53	0
Total	74,812	14,329
Total commercial | Commercial real estate — owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	17,978	13,772
Financing Receivable, Originated in Current Fiscal Year	133,882	212,883
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	187,262	236,769
Financing Receivable, Originated Two Years before Latest Fiscal Year	209,317	170,624
Financing Receivable, Originated Three Years before Latest Fiscal Year	108,436	172,630
Financing Receivable, Originated Four Years before Latest Fiscal Year	149,146	83,570
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	248,950	101,475
Total	1,054,969	991,722
Total commercial | Commercial real estate — owner occupied | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	17,557	12,447
Financing Receivable, Originated in Current Fiscal Year	133,133	211,645
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	182,517	225,627
Financing Receivable, Originated Two Years before Latest Fiscal Year	196,057	163,965
Financing Receivable, Originated Three Years before Latest Fiscal Year	104,786	160,370
Financing Receivable, Originated Four Years before Latest Fiscal Year	142,602	73,487
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	229,321	97,420
Total	1,005,973	944,961
Total commercial | Commercial real estate — owner occupied | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	421	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,000	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,666	1,136
Financing Receivable, Originated Three Years before Latest Fiscal Year	2,446	1,491
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,737	9,713
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	17,269	12,339
Total commercial | Commercial real estate — owner occupied | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	1,325
Financing Receivable, Originated in Current Fiscal Year	748	1,238
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,177	11,141
Financing Receivable, Originated Two Years before Latest Fiscal Year	3,334	5,523
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,205	10,769
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,807	370
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	19,520	4,055
Total	27,792	34,422
Total commercial | Commercial real estate — owner occupied | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0
Financing Receivable, Revolving	0
Financing Receivable, Originated in Current Fiscal Year	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,568
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,260
Financing Receivable, Originated Three Years before Latest Fiscal Year	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	108
Total	3,936
Total commercial | Commercial and business lending
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	16,101	5,796
Financing Receivable, Revolving	2,182,627	2,070,307
Financing Receivable, Originated in Current Fiscal Year	1,923,943	3,508,450
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,814,912	2,631,578
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,722,344	769,463
Financing Receivable, Originated Three Years before Latest Fiscal Year	703,689	783,919
Financing Receivable, Originated Four Years before Latest Fiscal Year	635,446	414,449
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,171,075	573,010
Total	11,154,037	10,751,176
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	2,760
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	401
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	5,695
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	13,264
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	5,900
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	3,795
Charge offs	31,816
Total commercial | Commercial and business lending | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	477	1,423
Financing Receivable, Revolving	2,083,273	1,951,224
Financing Receivable, Originated in Current Fiscal Year	1,908,900	3,457,191
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,698,672	2,592,636
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,623,845	731,798
Financing Receivable, Originated Three Years before Latest Fiscal Year	654,533	733,490
Financing Receivable, Originated Four Years before Latest Fiscal Year	624,468	404,129
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,124,635	530,326
Total	10,718,325	10,400,794
Total commercial | Commercial and business lending | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	39	0
Financing Receivable, Revolving	26,821	93,209
Financing Receivable, Originated in Current Fiscal Year	39	3,411
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	41,694	23,607
Financing Receivable, Originated Two Years before Latest Fiscal Year	16,396	1,136
Financing Receivable, Originated Three Years before Latest Fiscal Year	6,112	1,491
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,737	9,732
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	26,136	32,497
Total	121,935	165,083
Total commercial | Commercial and business lending | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	829	447
Financing Receivable, Revolving	72,533	25,874
Financing Receivable, Originated in Current Fiscal Year	1,060	42,638
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	52,679	15,335
Financing Receivable, Originated Two Years before Latest Fiscal Year	60,945	27,410
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,427	48,938
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,242	589
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	20,143	10,188
Total	235,029	170,971
Total commercial | Commercial and business lending | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	14,756	3,926
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	13,945	5,210
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	21,868	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	21,158	9,119
Financing Receivable, Originated Three Years before Latest Fiscal Year	21,617	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	161	0
Total	78,748	14,329
Total commercial | Commercial real estate — investor
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	157,976	106,280
Financing Receivable, Originated in Current Fiscal Year	515,979	1,713,387
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,338,016	1,490,120
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,212,162	718,117
Financing Receivable, Originated Three Years before Latest Fiscal Year	756,452	541,177
Financing Receivable, Originated Four Years before Latest Fiscal Year	535,381	281,875
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	703,014	229,387
Total	5,218,980	5,080,344
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	242
Charge offs	242
Total commercial | Commercial real estate — investor | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	157,976	106,280
Financing Receivable, Originated in Current Fiscal Year	500,154	1,633,094
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,278,072	1,419,000
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,181,060	683,121
Financing Receivable, Originated Three Years before Latest Fiscal Year	687,373	530,444
Financing Receivable, Originated Four Years before Latest Fiscal Year	459,677	262,858
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	634,704	210,299
Total	4,899,015	4,845,096
Total commercial | Commercial real estate — investor | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	9,400	61,968
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	54,103	24,149
Financing Receivable, Originated Two Years before Latest Fiscal Year	26,330	7,361
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	9,400
Financing Receivable, Originated Four Years before Latest Fiscal Year	64,801	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,608	10,455
Total	160,243	113,333
Total commercial | Commercial real estate — investor | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	6,425	16,147
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,842	21,303
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,771	27,635
Financing Receivable, Originated Three Years before Latest Fiscal Year	69,079	1,333
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,903	19,017
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	51,820	7,099
Total	148,840	92,535
Total commercial | Commercial real estate — investor | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	2,177
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	25,668
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	10,882	1,535
Total	10,882	29,380
Total commercial | Real estate construction
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	27,872	29,892
Financing Receivable, Originated in Current Fiscal Year	251,100	900,593
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,008,428	913,107
Financing Receivable, Originated Two Years before Latest Fiscal Year	716,123	254,374
Financing Receivable, Originated Three Years before Latest Fiscal Year	91,982	45,149
Financing Receivable, Originated Four Years before Latest Fiscal Year	11,970	2,226
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	23,244	9,880
Total	2,130,719	2,155,222
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	25
Charge offs	25
Total commercial | Real estate construction | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	27,872	29,892
Financing Receivable, Originated in Current Fiscal Year	251,100	900,593
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,008,428	913,107
Financing Receivable, Originated Two Years before Latest Fiscal Year	716,123	241,230
Financing Receivable, Originated Three Years before Latest Fiscal Year	91,982	12,062
Financing Receivable, Originated Four Years before Latest Fiscal Year	11,970	2,226
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	23,141	9,775
Total	2,130,617	2,108,885
Total commercial | Real estate construction | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan		0
Financing Receivable, Revolving		0
Financing Receivable, Originated in Current Fiscal Year		0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0
Financing Receivable, Originated Two Years before Latest Fiscal Year		12,174
Financing Receivable, Originated Three Years before Latest Fiscal Year		33,087
Financing Receivable, Originated Four Years before Latest Fiscal Year		0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0
Total		45,261
Total commercial | Real estate construction | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan		0
Financing Receivable, Revolving		0
Financing Receivable, Originated in Current Fiscal Year		0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		0
Financing Receivable, Originated Two Years before Latest Fiscal Year		970
Financing Receivable, Originated Three Years before Latest Fiscal Year		0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		0
Total		970
Total commercial | Real estate construction | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	103	105
Total	103	105
Total commercial | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	185,848	136,173
Financing Receivable, Originated in Current Fiscal Year	767,080	2,613,980
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,346,445	2,403,227
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,928,284	972,492
Financing Receivable, Originated Three Years before Latest Fiscal Year	848,434	586,326
Financing Receivable, Originated Four Years before Latest Fiscal Year	547,351	284,101
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	726,258	239,267
Total	7,349,699	7,235,565
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	266
Charge offs	266
Total commercial | Commercial Real Estate | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	38,412
Financing Receivable, Revolving	185,848	136,173
Financing Receivable, Originated in Current Fiscal Year	751,254	2,533,687
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,286,500	2,332,107
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,897,183	924,351
Financing Receivable, Originated Three Years before Latest Fiscal Year	779,355	542,505
Financing Receivable, Originated Four Years before Latest Fiscal Year	471,646	265,083
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	657,845	220,073
Total	7,029,632	6,953,981
Total commercial | Commercial Real Estate | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	9,400	61,968
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	54,103	24,149
Financing Receivable, Originated Two Years before Latest Fiscal Year	26,330	19,535
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	42,487
Financing Receivable, Originated Four Years before Latest Fiscal Year	64,801	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,608	10,455
Total	160,243	158,595
Total commercial | Commercial Real Estate | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	6,425	16,147
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,842	21,303
Financing Receivable, Originated Two Years before Latest Fiscal Year	4,771	28,605
Financing Receivable, Originated Three Years before Latest Fiscal Year	69,079	1,333
Financing Receivable, Originated Four Years before Latest Fiscal Year	10,903	19,017
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	51,820	7,099
Total	148,840	93,505
Total commercial | Commercial Real Estate | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	2,177
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	25,668
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	10,985	1,640
Total	10,985	29,485
Total consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	8,701	9,038
Financing Receivable, Revolving	708,679	708,817
Financing Receivable, Originated in Current Fiscal Year	1,191,739	2,732,080
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,805,096	2,306,769
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,271,661	1,728,037
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,595,728	830,759
Financing Receivable, Originated Four Years before Latest Fiscal Year	770,495	383,731
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,346,054	2,122,635
Total	11,689,451	10,812,828
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	3,363
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	254
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	3,674
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	633
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	177
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	45
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	662
Charge offs	8,809
Total consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,417	7,318
Financing Receivable, Revolving	707,925	708,154
Financing Receivable, Originated in Current Fiscal Year	1,190,534	2,720,589
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	2,796,822	2,301,991
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,263,612	1,721,576
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,587,959	825,866
Financing Receivable, Originated Four Years before Latest Fiscal Year	762,917	378,310
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,295,656	2,083,904
Total	11,605,425	10,740,390
Total consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	360	52
Financing Receivable, Revolving	621	592
Financing Receivable, Originated in Current Fiscal Year	601	1,063
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,476	403
Financing Receivable, Originated Two Years before Latest Fiscal Year	405	101
Financing Receivable, Originated Three Years before Latest Fiscal Year	14	5
Financing Receivable, Originated Four Years before Latest Fiscal Year	57	47
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	543	398
Total	3,717	2,609
Total consumer | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	11	0
Financing Receivable, Revolving	0	15
Financing Receivable, Originated in Current Fiscal Year	0	455
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	80	71
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	77	772
Financing Receivable, Originated Four Years before Latest Fiscal Year	392	31
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	935	831
Total	1,483	2,175
Total consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	913	1,668
Financing Receivable, Revolving	133	56
Financing Receivable, Originated in Current Fiscal Year	604	9,973
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	6,718	4,304
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,644	6,360
Financing Receivable, Originated Three Years before Latest Fiscal Year	7,679	4,116
Financing Receivable, Originated Four Years before Latest Fiscal Year	7,129	5,343
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	48,919	37,501
Total	78,826	67,654
Total consumer | Residential mortgage
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	294,640	1,419,527
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,729,032	2,188,332
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,183,725	1,722,979
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,592,654	821,645
Financing Receivable, Originated Four Years before Latest Fiscal Year	764,176	375,768
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,218,418	1,983,299
Total	8,782,645	8,511,550
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	128
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	22
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	148
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	7
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	410
Charge offs	714
Total consumer | Residential mortgage | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	294,499	1,410,566
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,725,855	2,184,125
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,176,722	1,716,663
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,585,071	817,164
Financing Receivable, Originated Four Years before Latest Fiscal Year	757,087	370,724
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2,176,012	1,951,406
Total	8,715,245	8,450,648
Total consumer | Residential mortgage | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan		0
Financing Receivable, Revolving		0
Financing Receivable, Originated in Current Fiscal Year		0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year		284
Financing Receivable, Originated Two Years before Latest Fiscal Year		96
Financing Receivable, Originated Three Years before Latest Fiscal Year		0
Financing Receivable, Originated Four Years before Latest Fiscal Year		0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year		63
Total		444
Total consumer | Residential mortgage | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	0	455
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	80	71
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	77	738
Financing Receivable, Originated Four Years before Latest Fiscal Year	347	29
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	744	685
Total	1,247	1,978
Total consumer | Residential mortgage | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	142	8,506
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,098	3,851
Financing Receivable, Originated Two Years before Latest Fiscal Year	7,003	6,219
Financing Receivable, Originated Three Years before Latest Fiscal Year	7,506	3,744
Financing Receivable, Originated Four Years before Latest Fiscal Year	6,742	5,014
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	41,662	31,145
Total	66,153	58,480
Total consumer | Auto finance
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	886,581	1,273,406
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,036,271	106,551
Financing Receivable, Originated Two Years before Latest Fiscal Year	83,289	333
Financing Receivable, Originated Three Years before Latest Fiscal Year	204	1,276
Financing Receivable, Originated Four Years before Latest Fiscal Year	617	446
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	202	61
Total	2,007,164	1,382,073
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	0
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	254
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	3,355
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	442
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	5
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	0
Charge offs	4,056
Total consumer | Auto finance | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	885,528	1,271,205
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,031,283	106,102
Financing Receivable, Originated Two Years before Latest Fiscal Year	82,447	333
Financing Receivable, Originated Three Years before Latest Fiscal Year	204	1,267
Financing Receivable, Originated Four Years before Latest Fiscal Year	614	446
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	202	61
Total	2,000,278	1,379,414
Total consumer | Auto finance | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	601	1,052
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1,436	118
Financing Receivable, Originated Two Years before Latest Fiscal Year	316	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	2,353	1,170
Total consumer | Auto finance | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	0	0
Financing Receivable, Revolving	0	0
Financing Receivable, Originated in Current Fiscal Year	452	1,149
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,551	331
Financing Receivable, Originated Two Years before Latest Fiscal Year	527	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	9
Financing Receivable, Originated Four Years before Latest Fiscal Year	4	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	0	0
Total	4,533	1,490
Total consumer | Home equity
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	8,504	8,891
Financing Receivable, Revolving	514,599	508,329
Financing Receivable, Originated in Current Fiscal Year	4,986	31,695
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	35,859	6,610
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,849	2,243
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,549	6,538
Financing Receivable, Originated Four Years before Latest Fiscal Year	5,175	7,333
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	59,631	61,605
Total	623,650	624,353
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	12
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	43
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	45
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	22
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	147
Charge offs	269
Total consumer | Home equity | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	7,318	7,254
Financing Receivable, Revolving	514,431	508,212
Financing Receivable, Originated in Current Fiscal Year	4,986	31,389
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	35,751	6,508
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,671	2,112
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,450	6,197
Financing Receivable, Originated Four Years before Latest Fiscal Year	4,703	6,966
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	51,693	54,827
Total	614,685	616,211
Total consumer | Home equity | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	343	47
Financing Receivable, Revolving	102	102
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	40	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	73	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	55	47
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	542	310
Total	811	458
Total consumer | Home equity | Potential Problem [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	11	0
Financing Receivable, Revolving	0	15
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	0	0
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	34
Financing Receivable, Originated Four Years before Latest Fiscal Year	45	2
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	192	146
Total	236	197
Total consumer | Home equity | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	832	1,590
Financing Receivable, Revolving	67	0
Financing Receivable, Originated in Current Fiscal Year	0	306
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	68	102
Financing Receivable, Originated Two Years before Latest Fiscal Year	105	131
Financing Receivable, Originated Three Years before Latest Fiscal Year	99	307
Financing Receivable, Originated Four Years before Latest Fiscal Year	373	319
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	7,205	6,322
Total	7,917	7,487
Total consumer | Other consumer
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	197	147
Financing Receivable, Revolving	194,079	200,488
Financing Receivable, Originated in Current Fiscal Year	5,532	7,452
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,934	5,276
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,797	2,482
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,321	1,300
Financing Receivable, Originated Four Years before Latest Fiscal Year	527	184
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	67,803	77,670
Total	275,993	294,851
Financing Receivable, Allowance for Credit Loss, Writeoff, by Origination Year [Abstract]
Financing Receivable, Revolving, Writeoff	3,351
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff	149
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff	124
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff	29
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff	12
Financing Receivable, Originated, More than Five Years before Current Fiscal Year, Writeoff	106
Charge offs	3,769
Total consumer | Other consumer | Pass [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	99	64
Financing Receivable, Revolving	193,494	199,942
Financing Receivable, Originated in Current Fiscal Year	5,521	7,429
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	3,933	5,256
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,772	2,468
Financing Receivable, Originated Three Years before Latest Fiscal Year	1,234	1,238
Financing Receivable, Originated Four Years before Latest Fiscal Year	514	174
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	67,749	77,611
Total	275,217	294,117
Total consumer | Other consumer | Special Mention [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	17	6
Financing Receivable, Revolving	520	490
Financing Receivable, Originated in Current Fiscal Year	0	11
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	0	0
Financing Receivable, Originated Two Years before Latest Fiscal Year	16	5
Financing Receivable, Originated Three Years before Latest Fiscal Year	14	5
Financing Receivable, Originated Four Years before Latest Fiscal Year	2	0
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	2	25
Total	553	537
Total consumer | Other consumer | Nonaccrual Loan [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Revolving, Converted To Term Loan	81	78
Financing Receivable, Revolving	66	56
Financing Receivable, Originated in Current Fiscal Year	11	11
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	1	21
Financing Receivable, Originated Two Years before Latest Fiscal Year	8	10
Financing Receivable, Originated Three Years before Latest Fiscal Year	73	56
Financing Receivable, Originated Four Years before Latest Fiscal Year	11	10
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	52	34
Total	$ 222	$ 197