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Leases Lease Costs (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2019
Sep. 30, 2019
Operating Lease, Cost $ 16.2 $ 53.5
Short-term Lease, Cost 0.7 5.6
Operating Lease, Expense 16.9 59.1
Finance Lease, Interest Expense 0.9 2.7
Finance Lease, Right-of-Use Asset, Amortization 2.5 7.1
Finance Lease, Expense 3.4 9.8
Sublease Income $ 2.0 $ 7.3