Leases - Supplemental Balance Sheet Information (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Operating Leases
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets	Other assets
Operating lease right-of-use assets	$ 26.9	$ 28.3
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	Other current liabilities	Other current liabilities
Operating lease liabilities, current portion	$ 5.8	$ 5.8
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Operating lease liabilities	$ 22.6	$ 24.2
Total operating lease liabilities	$ 28.4	$ 30.0
Operating leases:
Weighted average remaining lease term (years)	6 years 9 months 18 days	7 years
Weighted average discount rate	4.10%	4.10%