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Loans And Allowance For Credit Losses (Aging Information On Past Due And Accruing Loans) (Details) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Loans And Allowance For Loan Losses [Line Items] |  |
Current or Less than 30 Days Past Due | $ 15,808,125 | $ 15,116,475
30 - 89 Days Past Due | 71,111 | 39,001
90 Days Past Due and Still Accruing | 12,538 | 11,726
Non-accrual loans | 7,184 | 9,157
Total | 15,898,958 | 15,176,359
Business |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Total | 5,528,895 | 5,303,535
Real estate - construction and land |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Total | 1,206,955 | 1,118,266
Real estate - business |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Total | 3,331,627 | 3,058,837
Real estate - personal |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Total | 2,862,519 | 2,805,401
Consumer |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Total | 2,116,371 | 2,032,225
Revolving Home Equity [Member] |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Total | 286,026 | 275,945
Consumer credit card |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Total | 563,349 | 575,410
Overdrafts |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Total | 3,216 | 6,740
Commercial Portfolio Segment [Member] | Business |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Current or Less than 30 Days Past Due | 5,513,234 | 5,292,125
30 - 89 Days Past Due | 9,480 | 3,621
90 Days Past Due and Still Accruing | 536 | 477
Non-accrual loans | 5,645 | 7,312
Commercial Portfolio Segment [Member] | Real estate - construction and land |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Current or Less than 30 Days Past Due | 1,206,395 | 1,117,434
30 - 89 Days Past Due | 560 | 832
90 Days Past Due and Still Accruing | 0 | 0
Non-accrual loans | 0 | 0
Commercial Portfolio Segment [Member] | Real estate - business |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Current or Less than 30 Days Past Due | 3,307,921 | 3,058,566
30 - 89 Days Past Due | 23,557 | 57
90 Days Past Due and Still Accruing | 0 | 0
Non-accrual loans | 149 | 214
Personal Banking Portfolio Segment [Member] | Real estate - personal |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Current or Less than 30 Days Past Due | 2,847,665 | 2,796,662
30 - 89 Days Past Due | 10,506 | 4,125
90 Days Past Due and Still Accruing | 2,958 | 2,983
Non-accrual loans | 1,390 | 1,631
Personal Banking Portfolio Segment [Member] | Consumer |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Current or Less than 30 Days Past Due | 2,091,670 | 2,005,556
30 - 89 Days Past Due | 21,135 | 24,458
90 Days Past Due and Still Accruing | 3,566 | 2,211
Non-accrual loans | 0 | 0
Personal Banking Portfolio Segment [Member] | Revolving Home Equity [Member] |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Current or Less than 30 Days Past Due | 284,595 | 274,372
30 - 89 Days Past Due | 541 | 772
90 Days Past Due and Still Accruing | 890 | 801
Non-accrual loans | 0 | 0
Personal Banking Portfolio Segment [Member] | Consumer credit card |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Current or Less than 30 Days Past Due | 553,815 | 565,335
30 - 89 Days Past Due | 4,989 | 4,821
90 Days Past Due and Still Accruing | 4,545 | 5,254
Non-accrual loans | 0 | 0
Personal Banking Portfolio Segment [Member] | Overdrafts |  |
Loans And Allowance For Loan Losses [Line Items] |  |
Current or Less than 30 Days Past Due | 2,830 | 6,425
30 - 89 Days Past Due | 343 | 315
90 Days Past Due and Still Accruing | 43 | 0
Non-accrual loans | $ 0 | $ 0

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