Leases Supplemental Balance Sheet Information-Leases (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Operating Lease, Right-of-Use Asset	$ 406.7	$ 417.1
Operating Lease, Liability, Current	41.6	42.3
Operating Lease, Liability, Noncurrent	496.3	514.8
Operating Lease, Liability	$ 537.9	$ 557.1
Operating Lease, Weighted Average Remaining Lease Term	145 months	146 months
Operating Lease, Weighted Average Discount Rate, Percent	4.00%	4.00%
Finance Lease, Right-of-Use Asset	$ 95.3	$ 97.5
Finance Lease, Liability, Current	7.5	7.4
Finance Lease, Liability, Noncurrent	89.6	91.5
Finance Lease, Liability	$ 97.1	$ 98.9
Finance Lease, Weighted Average Remaining Lease Term	132 months	135 months
Finance Lease, Weighted Average Discount Rate, Percent	3.50%	3.50%