Leases - Additional Information (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease, right-of-use asset, statement of financial position [extensible enumeration]	Other assets
Operating lease, liability, statement of financial position [extensible enumeration]	Other liabilities
Operating lease, right-of-use asset	$ 139.7
Operating lease, liability	$ 148.6
Finance lease, asset, statement of financial position [extensible enumeration]	Premises and equipment, net
Finance lease, lease, statement of financial position [extensible enumeration]	Other liabilities
Finance lease, asset	$ 11.9	$ 0.0
Finance lease, liability	12.0
Lessee, operating lease, right-of-use asset, lease not yet commenced	69.2
Lessee, operating lease, lease not yet commenced, liability	$ 90.6
Maximum
Lessee, Lease, Description [Line Items]
Lessee, operating lease, lease not yet commenced, term of contract	16 years