Leases - Leases Balances on Consolidated Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Operating leases:
Other assets, net	$ 59.8	$ 80.4
Other current liabilities	$ 16.3	$ 21.1
Operating Lease, Liability, Current, Statement of Financial Position [Extensible List]	us-gaap:AccruedLiabilitiesCurrent	us-gaap:AccruedLiabilitiesCurrent
Other long-term liabilities	$ 71.3	$ 81.9
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible List]	us-gaap:OtherLiabilitiesNoncurrent	us-gaap:OtherLiabilitiesNoncurrent
Other lease information
Weighted-average remaining lease term—Operating leases	11 years 1 month 6 days	10 years 7 months 6 days
Weighted-average discount rate—Operating leases	5.10%	5.10%