Fair Value - Fair Value on Recurring Basis (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Assets and Liabilities Measured at Fair Value on a recurring basis
Restricted cash	$ 9.1	$ 0.8
Fair Value, Recurring
Assets and Liabilities Measured at Fair Value on a recurring basis
Cash and cash equivalents		257.1
Restricted cash	9.1	0.8
Short-term investments	39.2	56.9
Interest rate swap contract	3.1
Foreign currency forward contracts	4.5	5.6
Total Assets	387.5	320.4
Foreign currency forward contracts	19.8	1.0
Total Liabilities	19.8	1.0
Fair Value, Recurring | Level 1, 2 and 3
Assets and Liabilities Measured at Fair Value on a recurring basis
Cash and cash equivalents	292.1
Fair Value, Recurring | Level 1
Assets and Liabilities Measured at Fair Value on a recurring basis
Cash and cash equivalents	289.3	244.8
Restricted cash	9.1	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	298.4	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	2.8	12.3
Restricted cash	0.0	0.0
Short-term investments	39.2	56.9
Interest rate swap contract	3.1
Foreign currency forward contracts	4.5	5.6
Total Assets	49.6	74.8
Foreign currency forward contracts	19.8	1.0
Total Liabilities	19.8	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
Fair Value, Recurring | Fair Value Measured at Net Asset Value Per Share
Assets and Liabilities Measured at Fair Value on a recurring basis
Cash and cash equivalents	$ 39.5