Leases - Schedule of Components of ROU Assets and Lease Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Assets
Right-of-use assets	$ 191.9	$ 235.1
Leasehold improvements, equipment and construction in progress, net	24.6	28.8
Total leased assets	216.5	263.9
Current
Short-term lease liabilities	73.9	82.1
Current portion of long-term borrowings	6.9	7.8
Noncurrent
Long-term lease liabilities	193.9	243.4
Long-term borrowings, excluding current portion	15.6	20.5
Total lease liabilities	$ 290.3	$ 353.8