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Loans And Allowance For Loan Losses (Schedule Of Allowances For Loan Losses And Recorded Investment In Loans) (Details) - USD ($) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Jan. 01, 2020 | Dec. 31, 2017
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Charge-offs | $ (119,262,000) | $ (79,135,000) | $ (74,054,000) |  |
Recoveries | 24,550,000 | 21,523,000 | 23,644,000 |  |
Provision for credit losses(1) | 336,052,000 | 87,720,000 | 51,697,000 |  |
Transfer of unfunded commitment reserve |  | 739,000 |  |  |
Deferred fees and costs, net | (77,700,000) | (25,400,000) |  |  |
Purchased credit-impaired loans |  |  | 0 |  |
Allowance for purchased credit-impaired loans |  | 0 | 0 |  |
Financing Receivable, Allowance for Credit Loss | 605,736,000 | 281,402,000 | 250,555,000 | $ 281,402,000 | $ 249,268,000
Reserve for Unfunded Commitments | 47,800,000 |  |  | 1,375,000 |
All Financing Receivable, Allowance for Credit Loss | 653,500,000 |  |  | 282,777,000 |
Provision for credit losses | 355,022,000 | 87,720,000 | 51,697,000 |  |
Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss |  |  |  | 82,994,000 |
Reserve for Unfunded Commitments |  |  |  | 27,440,000 |
All Financing Receivable, Allowance for Credit Loss |  |  |  | 110,434,000 |
Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss |  |  |  | 364,396,000 |
Total commercial and industrial |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Charge-offs | (76,260,000) | (49,572,000) | (48,775,000) |  |
Recoveries | 13,544,000 | 7,827,000 | 7,165,000 |  |
Provision for credit losses(1) | 148,799,000 | 53,665,000 | 47,930,000 |  |
Transfer of unfunded commitment reserve |  | 739,000 |  |  |
Financing Receivable, Allowance for Credit Loss | 229,555,000 | 145,782,000 | 133,123,000 | 145,782,000 | 126,803,000
Total commercial and industrial | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss |  |  |  | (2,310,000) |
Total commercial and industrial | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss |  |  |  | 143,472,000 |
Total commercial real estate |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Charge-offs | (13,213,000) | (5,540,000) | (4,408,000) |  |
Recoveries | 2,857,000 | 8,618,000 | 10,188,000 |  |
Provision for credit losses(1) | 74,319,000 | (4,444,000) | (11,982,000) |  |
Transfer of unfunded commitment reserve |  | 0 |  |  |
Financing Receivable, Allowance for Credit Loss | 130,742,000 | 67,430,000 | 68,796,000 | 67,430,000 | 74,998,000
Total commercial real estate | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss |  |  |  | (651,000) |
Total commercial real estate | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss |  |  |  | 66,779,000 |
Total consumer |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Charge-offs | (29,789,000) | (24,023,000) | (20,871,000) |  |
Recoveries | 8,149,000 | 5,078,000 | 6,291,000 |  |
Provision for credit losses(1) | 112,934,000 | 38,499,000 | 15,749,000 |  |
Transfer of unfunded commitment reserve |  | 0 |  |  |
Financing Receivable, Allowance for Credit Loss | $ 245,439,000 | $ 68,190,000 | $ 48,636,000 | 68,190,000 | $ 47,467,000
Total consumer | Cumulative Effect, Period of Adoption, Adjustment |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss |  |  |  | 85,955,000 |
Total consumer | Cumulative Effect, Period of Adoption, Adjusted Balance |  |  |  |  |
Allowance for Loan and Lease Losses [Roll Forward] |  |  |  |  |
Financing Receivable, Allowance for Credit Loss |  |  |  | $ 154,145,000 |

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