Leases - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Leases [Abstract]
Right-of-use lease assets	$ 56.0	$ 61.1
Current portion of operating lease liabilities	16.4	16.1
Non-current portion of operating lease liability	$ 40.1	$ 46.3
Operating Lease, Right-of-Use Asset, Statement of Financial Position	us-gaap:OtherAssetsNoncurrent	us-gaap:OtherAssetsNoncurrent
Operating Lease, Liability, Noncurrent, Statement of Financial Position	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Operating Lease, Liability, Current, Statement of Financial Position	us-gaap:OtherAccruedLiabilitiesCurrent	us-gaap:OtherAccruedLiabilitiesCurrent
Operating lease rent expense	$ 20.9	$ 20.8
Rent expense			$ 21.6