Leases - Supplemental Balance Sheet Lease Information (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Leases [Abstract]
Operating lease right-of-use assets	$ 133.9	$ 136.2
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Other assets	Other assets
Current operating lease liabilities	$ 48.1	$ 47.1
Operating Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Accounts payable and other current liabilities	Accounts payable and other current liabilities
Non-current operating lease liabilities	$ 101.5	$ 106.4
Operating Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Other liabilities	Other liabilities
Total operating lease liabilities	$ 149.6	$ 153.5
Finance lease right-of-use assets	$ 63.2	$ 60.5
Finance Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration]	Properties, net	Properties, net
Current finance lease liabilities	$ 4.1	$ 4.1
Finance Lease, Liability, Current, Statement of Financial Position [Extensible Enumeration]	Current portion of long-term debt and short-term borrowings	Current portion of long-term debt and short-term borrowings
Non-current finance lease liabilities	$ 62.6	$ 59.9
Finance Lease, Liability, Noncurrent, Statement of Financial Position [Extensible Enumeration]	Long-term debt	Long-term debt
Total finance lease liabilities	$ 66.7	$ 64.0