Leases - Additional Information - (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Operating lease, right of use assets	$ 58.5	$ 66.5
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	us-gaap:OtherAssetsNoncurrent	us-gaap:OtherAssetsNoncurrent
Operating lease, liabilities	$ 58.5	$ 66.5
Operating lease, non-current liabilities	$ 46.5	$ 53.6
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Operating Lease, Liability, Current	$ 12.0	$ 12.9
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent
Operating lease, weighted average remaining lease terms	8 years
Operating lease, weighted average interest rate	3.00%
Operating lease expense	$ 16.2	$ 15.5	$ 13.8