Deposits (Summary of Average Balances and Weighted Average Rates Paid on Deposits) (Details) - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Deposits [Abstract] | ||||
| Non-interest bearing, average balance | $ 9,027,557 | $ 7,993,915 | $ 8,747,082 | $ 7,705,120 |
| Non-interest bearing, average rate (in Percent) | 0.00% | 0.00% | 0.00% | 0.00% |
| Interest bearing, average balance | $ 6,365,179 | $ 5,407,538 | $ 6,200,056 | $ 5,111,328 |
| Interest-bearing, average rate (in Percent) | 2.87% | 3.39% | 2.89% | 3.37% |
| Savings and Money Market, average balance | $ 10,083,767 | $ 10,355,700 | $ 10,164,282 | $ 10,593,396 |
| Weighted Average Rate Domestic Deposit Savings and Money Market | 2.89% | 3.41% | 2.89% | 3.42% |
| Time, average balance | $ 3,251,965 | $ 3,919,526 | $ 3,500,231 | $ 4,122,014 |
| Weighted Average Rate Domestic Deposit, Time Deposits | 3.51% | 3.79% | 3.49% | 3.89% |
| Deposits, average balance | $ 28,728,468 | $ 27,676,679 | $ 28,611,651 | $ 27,531,858 |
| Weighted Average Rate Domestic Deposits | 2.05% | 2.47% | 2.08% | 2.52% |