Derivatives - Derivative Instruments Effect on AOCI and Results of Operations (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Cash Flow Hedging [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) Recognized in AOCI on Derivatives, Net of Tax	$ (2.2)	$ (3.7)	$ 0.3	$ (2.6)
Gain (Loss) Reclassified from AOCI	0.8	0.6	1.6	0.4
Cash Flow Hedging [Member] \| Interest rate contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) Recognized in AOCI on Derivatives, Net of Tax	0.8	(0.5)	3.0	(0.8)
Sales [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) Recognized in AOCI on Derivatives, Net of Tax	(3.1)	(0.4)	(2.7)	1.5
Gain (Loss) Reclassified from AOCI	0.1	(0.1)	0.7	(0.1)
Other Income Expense [Member] \| Foreign Exchange Contract [Member] \| Not Designated as Hedging Instrument [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Amount of Gain (Loss) Recognized in Income	(2.6)	(0.3)	(2.1)	(1.4)
Other Income Expense [Member] \| Cash Flow Hedging [Member] \| Foreign Exchange Contract [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) Recognized in AOCI on Derivatives, Net of Tax	0.1	(2.8)	0.0	(3.3)
Gain (Loss) Reclassified from AOCI	0.2	1.0	0.0	1.2
Interest Expense [Member] \| Cash Flow Hedging [Member] \| Interest rate contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) Reclassified from AOCI	0.5	(0.3)	0.9	(0.7)
Accounting Standards Update 2017-12 [Member] \| Cash Flow Hedging [Member] \| Foreign exchange contracts [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized Gain (Loss) Recognized in AOCI on Derivatives, Net of Tax			7.5
Derivative Instruments, Gain Reclassified from Accumulated OCI into Income, Effective Portion	$ 0.2		$ 0.4
Derivative Instruments, Gain (Loss) Recognized in Income, Ineffective Portion and Amount Excluded from Effectiveness Testing, Net		$ 0.4		$ 0.9

Amount of increase (decrease) in the fair value of derivatives recognized in the income statement.

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
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The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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The portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments representing (a) the amount of the hedge ineffectiveness and (b) the amount, if any, excluded from the assessment of hedge effectiveness.

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The effective portion of gain reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

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Amount before tax of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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