Pledged and Restricted Assets - Fair Value of Available for Sale Debt Securities Included In Pledged Assets (Details) - USD ($) $ in Millions |
Dec. 31, 2021 |
Dec. 31, 2020 |
---|---|---|
Financial Instruments Owned and Pledged as Collateral [Line Items] | ||
Amount of securities and loans pledged | $ 54,600.0 | $ 47,500.0 |
SECURITIES SOLD UNDER AGREEMENTS TO REPURCHASE | ||
Financial Instruments Owned and Pledged as Collateral [Line Items] | ||
Amount of securities and loans pledged | 524.1 | 33.0 |
Derivative contracts | ||
Financial Instruments Owned and Pledged as Collateral [Line Items] | ||
Amount of securities and loans pledged | $ 17.6 | $ 27.1 |