Fair Value Disclosure Fair Value Disclosure - Impact of Cash Flow and Hedge Accounting Relationships (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest expense, net	$ (46.3)	$ (42.6)	$ (139.9)	$ (124.7)
Other (expense) income	(1.8)	(3.8)	(5.6)	(14.9)
Operating Lease, Expense		11.8		37.5
Interest Expense [Member]
Gain (loss) on fair value hedging relationships
Gain (loss) on non-designated derivative contracts	0.0	0.0	0.0	0.0
Interest Expense [Member] | Interest Rate Contract [Member]
Gain (loss) on fair value hedging relationships
Hedged items	(1.3)	1.0	(9.8)	8.6
Derivatives designated as hedging instruments	1.3	(1.0)	9.8	(8.6)
Interest Expense [Member] | Interest Rate Contract [Member] | Cash Flow Hedging [Member]
Gain (loss) on fair value hedging relationships
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	(0.5)	(1.1)	(2.0)	(3.3)
Interest Expense [Member] | Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]
Gain (loss) on fair value hedging relationships
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	0.0	0.0	0.0	0.0
Other (Income) Expense [Member]
Gain (loss) on fair value hedging relationships
Gain (loss) on non-designated derivative contracts	4.0	(3.0)	1.3	2.7
Other (Income) Expense [Member] | Interest Rate Contract [Member]
Gain (loss) on fair value hedging relationships
Hedged items	0.0	0.0	0.0	0.0
Derivatives designated as hedging instruments	0.0	0.0	0.0	0.0
Other (Income) Expense [Member] | Interest Rate Contract [Member] | Cash Flow Hedging [Member]
Gain (loss) on fair value hedging relationships
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	0.0	0.0	0.0	0.0
Other (Income) Expense [Member] | Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]
Gain (loss) on fair value hedging relationships
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	$ 19.3	2.2	$ 24.4	10.3
Operating Expense [Member] | Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]
Gain (loss) on fair value hedging relationships
Amount of gain (loss) reclassified from accumulated other comprehensive income into income		$ (0.1)		$ (0.1)