Deposits - Additional Information (Details) - USD ($) $ in Millions |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
Jun. 30, 2025 |
Jun. 30, 2024 |
Dec. 31, 2024 |
|
| Other Liabilities Disclosure [Abstract] | |||||
| Wholesale deposits | $ 5,900.0 | $ 5,900.0 | $ 6,900.0 | ||
| Reciprocal deposits | 12,900.0 | 12,900.0 | 14,000.0 | ||
| Earnings credits or referral fees | 25,000.0 | 25,000.0 | $ 20,700.0 | ||
| Deposits costs, deposits with earnings credits | $ 142.8 | $ 167.4 | $ 272.7 | $ 298.6 | |