Guarantees and Indemnifications Guarantees (Details) - USD ($) $ in Millions |
Sep. 30, 2022 |
Dec. 31, 2021 |
|---|---|---|
| Guarantees [Abstract] | ||
| Total of Loans Covered by Guarantees | $ 435.9 | $ 305.0 |
| Total of Guaranteed Loans Inquired About | 2.0 | 0.7 |
| Loan Repurchase Guarantee Liability | $ 0.6 | $ 0.3 |