Leases Supplemental Balance Sheet Information-Leases (Details) - USD ($) $ in Millions	Jun. 30, 2020	Dec. 31, 2019
Operating Lease, Right-of-Use Asset	$ 396.7	$ 417.1
Operating Lease, Liability, Current	40.5	42.3
Operating Lease, Liability, Noncurrent	486.8	514.8
Operating Lease, Liability	$ 527.3	$ 557.1
Operating Lease, Weighted Average Remaining Lease Term	143 months	146 months
Operating Lease, Weighted Average Discount Rate, Percent	4.00%	4.00%
Finance Lease, Right-of-Use Asset	$ 93.2	$ 97.5
Finance Lease, Liability, Current	7.5	7.4
Finance Lease, Liability, Noncurrent	87.7	91.5
Finance Lease, Liability	$ 95.2	$ 98.9
Finance Lease, Weighted Average Remaining Lease Term	129 months	135 months
Finance Lease, Weighted Average Discount Rate, Percent	3.50%	3.50%