Leases Leases - Lease Cost (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Leases [Abstract]
Fixed operating lease cost	$ 9.5	$ 16.2	$ 26.1	$ 33.7
Short-term Operating Lease Cost	2.5	1.4	5.2	3.4
Variable Operating Lease Cost	0.4	0.2	1.3	0.7
Finance Lease Amortization of ROU Asset	0.2	0.4	0.3	0.7
Interest on lease liabilities	0.1	0.1	0.2	1.1
Total Lease Cost	$ 12.7	18.3	33.1	39.6
LVT Variable Operating Costs		$ 0.0	$ 0.8	$ 0.5