Supplemental Balance Sheet Information Related to Leases (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Leases [Abstract]
Right-of-use operating lease assets	$ 139.6	$ 167.5
Finance Lease, Right-of-Use Asset	5.1	2.4
Lease, Right-Of-Use Asset	144.7	169.9
Operating lease liabilities	52.2	62.8
Finance Lease, Liability, Current	1.7	0.9
Operating Lease, Liability, Noncurrent	89.1	106.4
Finance Lease, Liability, Noncurrent	3.2	1.4
Lease Liability	$ 146.2	$ 171.5