Leases - Narrative (Details) $ in Millions	12 Months Ended
	Dec. 31, 2021 USD ($) benefit_plan	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)
Lessee, Lease, Description [Line Items]
Term of leases	10 years
Options to extend, term	5 years
Termination period	1 year
Operating lease expense	$ 34.1	$ 35.5	$ 37.0
Cash outflow for operating leases	36.7	35.5
Right-of-use assets obtained in exchange for operating lease liabilities	$ 17.8	$ 34.3
Operating lease, weighted average remaining lease term	4 years	5 years
Operating lease, weighted average discount rate	2.70%	3.10%
Number of real estate lease agreements not yet commenced | benefit_plan	2
Value of lease agreements not yet commenced	$ 46.0
Term of lease agreements not yet commenced	10 years
2020 Acquisitions
Lessee, Lease, Description [Line Items]
Right-of-use assets obtained in exchange for operating lease liabilities	$ 9.4