Derivative Instruments (Schedule Of Notional Amounts Of Derivative Instruments) (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Derivative [Line Items] | ||
| Derivative, Notional Amount | $ 5,330,608 | $ 4,593,942 |
| Interest rate swaps | ||
| Derivative [Line Items] | ||
| Derivative, Notional Amount | 2,112,473 | 1,968,679 |
| Interest Rate Floor | ||
| Derivative [Line Items] | ||
| Derivative, Notional Amount | 2,500,000 | 2,000,000 |
| Interest rate caps | ||
| Derivative [Line Items] | ||
| Derivative, Notional Amount | 238,700 | 105,770 |
| Credit risk participation agreements | ||
| Derivative [Line Items] | ||
| Derivative, Notional Amount | 448,224 | 474,951 |
| Foreign exchange contracts | ||
| Derivative [Line Items] | ||
| Derivative, Notional Amount | 16,171 | 29,451 |
| Mortgage loan commitments | ||
| Derivative [Line Items] | ||
| Derivative, Notional Amount | 6,427 | 6,297 |
| Mortgage loan forward sale contracts | ||
| Derivative [Line Items] | ||
| Derivative, Notional Amount | 1,113 | 1,794 |
| Forward TBA contracts | ||
| Derivative [Line Items] | ||
| Derivative, Notional Amount | $ 7,500 | $ 7,000 |