Debt, Interest Income, Expense and Other Finance Costs - Schedule of Debt (Details) - USD ($) $ in Millions	Jun. 30, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Total debt	$ 765.3	$ 910.2
Current maturities of long-term debt and capital leases	33.7	25.6
Long-term debt	731.6	884.6
Credit Facility
Debt Instrument [Line Items]
Total debt	225.0	60.0
Term Loans
Debt Instrument [Line Items]
Total debt	527.4	835.8
Capital leases
Debt Instrument [Line Items]
Total debt	8.8	10.4
Other
Debt Instrument [Line Items]
Total debt	$ 4.1	$ 4.0

Sum of the carrying values as of the balance sheet date of all debt, including all short-term borrowings, long-term debt, and capital lease obligations.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.13,16)
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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