Derivative Financial Instruments - Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Interest Expense [Member] \| Interest Rate Cap [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Gain) loss on instruments not designated as hedges, net	$ 0.0	$ 0.1	$ 0.0	$ 0.4
Other Nonoperating Income (Expense) [Member] \| Foreign Exchange Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
(Gain) loss on instruments not designated as hedges, net	$ (6.0)	$ 4.8	$ (4.6)	$ 7.2

Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration