Leases - Summary of Lease-Related Assets and Liabilities (Details) $ in Millions	Dec. 31, 2019 USD ($)
Operating leases:
Right-of-use asset	$ 65.0
Current portion of lease liabilities	23.3
Lease liabilities	48.0
Total operating lease liabilities	71.3
Finance leases:
Right-of-use asset	36.9
Current portion of lease liabilities	4.8
Lease liabilities	1.4
Total finance lease liabilities	$ 6.2