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Leases - Supplemental Cash Flow Information Related to Leases (Details) $ in Millions	9 Months Ended
	Sep. 30, 2019 USD ($)
Cash paid for amounts included in the measurement of lease liabilities
Operating cash flows from operating leases	$ 31.1
Operating cash flows from finance leases	3.5
Financing cash flows from finance leases	2.7
Right-of-use assets obtained in exchange for lease obligations
Operating leases, initial recognition	18.2
Operating leases, modifications and remeasurements	(9.5)
Finance leases, initial recognition	14.0
Finance leases, modifications and remeasurements	$ 8.2

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Cash Flow, Lessee [Abstract]

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Right-Of-Use Asset Obtained In Exchange For Lease Liabilities [Abstract]

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Right-of-Use Asset Obtained in Exchange for Finance Lease Liability, Modifications and Remeasurements

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- Definition

Amount of interest paid on finance lease liability.

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Amount of cash outflow for principal payment on finance lease.

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Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

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