Leases - Schedule of components of operating and finance leased asset (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Assets
Right-of-use assets	$ 444.5	$ 0.0
Leasehold improvements, equipment and construction in progress, net	17.7
Total leased assets	462.2
Current
Short-term lease liability	117.1	0.0
Current portion of long-term obligations under credit facility and other long-term borrowings	2.8
Noncurrent
Long-term lease liability	338.4	$ 0.0
Other long-term borrowings	15.1
Total lease liabilities	473.4
Finance lease, accumulated amortization	$ 2.1