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Leases - Supplemental Cash Flow Information (Details)
$ in Millions
12 Months Ended
Dec. 31, 2019
USD ($)
Cash paid for amounts included in the measurement of lease liabilities:  
Operating cash flows from operating leases $ 70.4
Operating cash flows from finance leases 30.0
Financing cash flows from finance leases 19.5
Right-of-use assets obtained in exchange for lease obligations:  
Right-of-Use Asset Obtained in Exchange for Operating Lease Liability 43.8
Right-of-Use Asset Obtained in Exchange for Finance Lease Liability $ 34.2