Leases - Schedule of components of operating and finance leased asset (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Assets
Right-of-use assets	$ 324.6	$ 431.7
Leasehold improvements, equipment and construction in progress, net	20.0	18.6
Total leased assets	344.6	450.3
Current
Short-term lease liabilities	108.5	115.2
Current portion of long-term obligations under credit facility and other long-term borrowings	3.5	3.1
Noncurrent
Long-term lease liabilities	305.7	327.7
Other long-term borrowings	16.6	15.6
Total lease liabilities	$ 434.3	$ 461.6