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Loans And Allowance for Credit Losses (Credit Quality Indicators Personal Banking Loan Portfolio) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 | Dec. 31, 2025
Credit Quality Indicator [Line Items] |  |
Total | $ 20,461,064 | $ 17,771,263
Personal Real Estate Loan [Member] |  |
Credit Quality Indicator [Line Items] |  |
Total | 4,407,606 | 3,053,435
Consumer Loan [Member] |  |
Credit Quality Indicator [Line Items] |  |
Total | 2,475,353 | 2,196,822
Revolving home equity |  |
Credit Quality Indicator [Line Items] |  |
Total | 619,178 | 375,159
Credit Card Receivable [Member] |  |
Credit Quality Indicator [Line Items] |  |
Total | 557,733 | 589,694
Overdrafts |  |
Credit Quality Indicator [Line Items] |  |
Total | 9,510 | 4,194
Personal Banking Portfolio Segment [Member] |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 299,219 | 911,367
Fiscal Year before Current Fiscal Year | 1,123,322 | 556,650
Two Years before Current Fiscal Year | 640,935 | 575,716
Three Years before Current Fiscal Year | 682,623 | 497,592
Four Years before Current Fiscal Year | 736,873 | 533,968
Prior | 2,248,249 | 1,264,890
Revolving Loans Amortized Cost Basis | 2,338,159 | 1,879,121
Total | 8,069,380 | 6,219,304
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 628 | 3,416
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 412 | 3,909
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 593 | 3,013
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 580 | 2,121
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 256 | 768
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff | 145 | 388
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff | 8,805 | 33,880
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 11,419 | 47,495
Personal Banking Portfolio Segment [Member] | Personal Real Estate Loan [Member] |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 153,432 | 386,816
Fiscal Year before Current Fiscal Year | 630,463 | 313,472
Two Years before Current Fiscal Year | 428,121 | 337,531
Three Years before Current Fiscal Year | 464,112 | 364,374
Four Years before Current Fiscal Year | 614,434 | 440,508
Prior | 2,106,150 | 1,201,969
Revolving Loans Amortized Cost Basis | 10,894 | 8,765
Total | 4,407,606 | 3,053,435
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 0 | 47
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 0 | 65
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 0 | 416
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 0 | 48
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff | 7 | 29
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 7 | 605
Personal Banking Portfolio Segment [Member] | Consumer Loan [Member] |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 136,277 | 520,357
Fiscal Year before Current Fiscal Year | 492,859 | 243,178
Two Years before Current Fiscal Year | 212,814 | 238,185
Three Years before Current Fiscal Year | 218,511 | 133,218
Four Years before Current Fiscal Year | 122,439 | 93,460
Prior | 142,099 | 62,921
Revolving Loans Amortized Cost Basis | 1,150,354 | 905,503
Total | 2,475,353 | 2,196,822
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 0 | 894
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 412 | 3,862
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 593 | 2,948
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 580 | 1,705
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 256 | 720
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff | 138 | 359
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff | 584 | 2,032
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 2,563 | 12,520
Personal Banking Portfolio Segment [Member] | Revolving home equity |  |
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
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 619,178 | 375,159
Total | 619,178 | 375,159
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff | 7 | 15
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 7 | 15
Personal Banking Portfolio Segment [Member] | Credit Card Receivable [Member] |  |
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
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 557,733 | 589,694
Total | 557,733 | 589,694
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff | 8,214 | 31,833
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 8,214 | 31,833
Personal Banking Portfolio Segment [Member] | Overdrafts |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 9,510 | 4,194
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
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 0 | 0
Total | 9,510 | 4,194
Financing Receivable, Year One, Originated, Current Fiscal Year, Writeoff | 628 | 2,522
Financing Receivable, Excluding Accrued Interest, Year Two, Originated, Fiscal Year before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Three, Originated, Two Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Four, Originated, Three Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Year Five, Originated, Four Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Originated, More than Five Years before Current Fiscal Year, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Revolving, Writeoff | 0 | 0
Financing Receivable, Excluding Accrued Interest, Allowance for Credit Loss, Writeoff | 628 | 2,522
Personal Banking Portfolio Segment [Member] | Current to 90 Days Past Due |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 299,219 | 911,180
Fiscal Year before Current Fiscal Year | 1,123,056 | 555,693
Two Years before Current Fiscal Year | 640,148 | 573,729
Three Years before Current Fiscal Year | 680,707 | 493,735
Four Years before Current Fiscal Year | 734,113 | 531,929
Prior | 2,242,137 | 1,259,576
Revolving Loans Amortized Cost Basis | 2,326,760 | 1,868,501
Total | 8,046,140 | 6,194,343
Personal Banking Portfolio Segment [Member] | Current to 90 Days Past Due | Personal Real Estate Loan [Member] |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 153,432 | 386,816
Fiscal Year before Current Fiscal Year | 630,463 | 312,902
Two Years before Current Fiscal Year | 427,638 | 335,950
Three Years before Current Fiscal Year | 462,502 | 360,793
Four Years before Current Fiscal Year | 611,820 | 438,586
Prior | 2,100,252 | 1,196,850
Revolving Loans Amortized Cost Basis | 10,894 | 8,765
Total | 4,397,001 | 3,040,662
Personal Banking Portfolio Segment [Member] | Current to 90 Days Past Due | Consumer Loan [Member] |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 136,277 | 520,170
Fiscal Year before Current Fiscal Year | 492,593 | 242,791
Two Years before Current Fiscal Year | 212,510 | 237,779
Three Years before Current Fiscal Year | 218,205 | 132,942
Four Years before Current Fiscal Year | 122,293 | 93,343
Prior | 141,885 | 62,726
Revolving Loans Amortized Cost Basis | 1,148,723 | 903,627
Total | 2,472,486 | 2,193,378
Personal Banking Portfolio Segment [Member] | Current to 90 Days Past Due | Revolving home equity |  |
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
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 617,791 | 374,738
Total | 617,791 | 374,738
Personal Banking Portfolio Segment [Member] | Current to 90 Days Past Due | Credit Card Receivable [Member] |  |
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
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 549,352 | 581,371
Total | 549,352 | 581,371
Personal Banking Portfolio Segment [Member] | Current to 90 Days Past Due | Overdrafts |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 9,510 | 4,194
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
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 0 | 0
Total | 9,510 | 4,194
Personal Banking Portfolio Segment [Member] | Over 90 days past due |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 0 | 187
Fiscal Year before Current Fiscal Year | 266 | 957
Two Years before Current Fiscal Year | 784 | 1,987
Three Years before Current Fiscal Year | 1,916 | 3,857
Four Years before Current Fiscal Year | 2,760 | 1,937
Prior | 4,799 | 4,574
Revolving Loans Amortized Cost Basis | 11,365 | 10,620
Total | 21,890 | 24,119
Personal Banking Portfolio Segment [Member] | Over 90 days past due | Personal Real Estate Loan [Member] |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 0 | 0
Fiscal Year before Current Fiscal Year | 0 | 570
Two Years before Current Fiscal Year | 480 | 1,581
Three Years before Current Fiscal Year | 1,610 | 3,581
Four Years before Current Fiscal Year | 2,614 | 1,820
Prior | 4,585 | 4,379
Revolving Loans Amortized Cost Basis | 0 | 0
Total | 9,289 | 11,931
Personal Banking Portfolio Segment [Member] | Over 90 days past due | Consumer Loan [Member] |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 0 | 187
Fiscal Year before Current Fiscal Year | 266 | 387
Two Years before Current Fiscal Year | 304 | 406
Three Years before Current Fiscal Year | 306 | 276
Four Years before Current Fiscal Year | 146 | 117
Prior | 214 | 195
Revolving Loans Amortized Cost Basis | 1,631 | 1,876
Total | 2,867 | 3,444
Personal Banking Portfolio Segment [Member] | Over 90 days past due | Revolving home equity |  |
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
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 1,353 | 421
Total | 1,353 | 421
Personal Banking Portfolio Segment [Member] | Over 90 days past due | Credit Card Receivable [Member] |  |
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
Prior | 0 | 0
Revolving Loans Amortized Cost Basis | 8,381 | 8,323
Total | 8,381 | 8,323
Personal Banking Portfolio Segment [Member] | Non-Accrual [Member] |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 0 | 0
Fiscal Year before Current Fiscal Year | 0 | 0
Two Years before Current Fiscal Year | 3 | 0
Three Years before Current Fiscal Year | 0 | 0
Four Years before Current Fiscal Year | 0 | 102
Prior | 1,313 | 740
Revolving Loans Amortized Cost Basis | 34 | 0
Total | 1,350 | 842
Personal Banking Portfolio Segment [Member] | Non-Accrual [Member] | Personal Real Estate Loan [Member] |  |
Credit Quality Indicator [Line Items] |  |
Current Fiscal Year | 0 | 0
Fiscal Year before Current Fiscal Year | 0 | 0
Two Years before Current Fiscal Year | 3 | 0
Three Years before Current Fiscal Year | 0 | 0
Four Years before Current Fiscal Year | 0 | 102
Prior | 1,313 | 740
Revolving Loans Amortized Cost Basis | 0 | 0
Total | $ 1,316 | $ 842

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