Fair Value - Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2022	Dec. 31, 2021
Assets and Liabilities Measured at fair value on a recurring basis
Cash and cash equivalents	$ 33.5
Restricted cash	0.7	$ 0.8
Fair Value, Recurring
Assets and Liabilities Measured at fair value on a recurring basis
Cash and cash equivalents	267.3	257.1
Restricted cash	0.7	0.8
Short-term investments	24.7	56.9
Interest rate swap contract	3.7
Foreign currency forward contracts	15.0	5.6
Total assets	344.9	320.4
Foreign currency forward contracts	11.0	1.0
Total liabilities	11.0	1.0
Fair Value, Recurring | Level 1
Assets and Liabilities Measured at fair value on a recurring basis
Cash and cash equivalents	266.5	244.8
Restricted cash	0.7	0.8
Short-term investments	0.0	0.0
Interest rate swap contract	0.0
Foreign currency forward contracts	0.0	0.0
Total assets	267.2	245.6
Foreign currency forward contracts	0.0	0.0
Total liabilities	0.0	0.0
Fair Value, Recurring | Level 2
Assets and Liabilities Measured at fair value on a recurring basis
Cash and cash equivalents	0.8	12.3
Restricted cash	0.0	0.0
Short-term investments	24.7	56.9
Interest rate swap contract	3.7
Foreign currency forward contracts	15.0	5.6
Total assets	44.2	74.8
Foreign currency forward contracts	11.0	1.0
Total liabilities	11.0	1.0
Fair Value, Recurring | Level 3
Assets and Liabilities Measured at fair value on a recurring basis
Cash and cash equivalents	0.0	0.0
Restricted cash	0.0	0.0
Short-term investments	0.0	0.0
Interest rate swap contract	0.0
Foreign currency forward contracts	0.0	0.0
Total assets	0.0	0.0
Foreign currency forward contracts	0.0	0.0
Total liabilities	$ 0.0	$ 0.0