Summary of Significant Accounting Policies (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) plan reporting_unit segment	Dec. 31, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items]
Restricted cash | $	$ 21.3	$ 49.2
Number of reporting units | reporting_unit	2
Weighted average useful life	10 years
Defined benefit plan, service requirement for full vesting for individuals employed on or before October 21, 1989	3 years
Defined benefit plan, service requirement for full vesting for individuals employed subsequent to October 31, 1989	5 years
Defined benefit plan, service requirement for full vesting for individuals who were not already in the defined benefit plan as of November 1, 2020	3 years
Number of deferred compensation plans | plan	3
Number of reportable segments | segment	2
Core deposits
Finite-Lived Intangible Assets [Line Items]
Weighted average useful life	10 years
Core deposits | Minimum
Finite-Lived Intangible Assets [Line Items]
Weighted average useful life	7 years
Core deposits | Maximum
Finite-Lived Intangible Assets [Line Items]
Weighted average useful life	10 years
Customer list intangible
Finite-Lived Intangible Assets [Line Items]
Weighted average useful life acquired	10 years