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Leases - Supplemental Cash Flow Information (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows for operating leases	$ 12.8	$ 24.1
Operating cash flows for finance leases	0.2	0.7
Financing cash flows for finance leases	5.8	7.3
Right-of-use assets obtained in exchange for lease obligations:
Operating leases	1.3	0.5
Finance leases	$ 0.1	$ 0.0

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Cash paid for amounts included in the measurement of lease liabilities: [Abstract]

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Amount of cash outflow for principal payment on finance lease.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
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