Other Balance Sheet Accounts - Other Assets, Noncurrent (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Operating lease right-of-use asset	$ 47.8	$ 48.7
Defined benefit pension plans	30.1	31.0
Deferred income taxes	9.5	10.3
Other assets	27.3	27.5
Other assets	$ 114.7	$ 117.5
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets