Fair Value Disclosure Fair Value Disclosure - Impact of Cash Flow and Hedge Accounting Relationships (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Income into Income	$ 4.8	$ 6.6	$ (0.1)	$ (3.6)
Interest expense, net	(47.4)	(45.5)	(92.9)	(90.6)
Other (expense) income	(3.0)	(0.4)	(11.0)	(3.6)
Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Loss (Gain) Recognized in Other Comprehensive Income	8.1	4.2	4.2	(8.7)
Interest Rate Contract [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Loss (Gain) Recognized in Other Comprehensive Income	(0.4)	0.0	(0.5)	0.0
Foreign Exchange Contract [Member] | Cash Flow Hedging [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Loss (Gain) Recognized in Other Comprehensive Income	8.5	4.2	4.7	(8.7)
Interest Expense [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Income into Income	0.4	0.7	0.8	1.5
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	0.2	(5.3)	(6.7)	(8.5)
Derivatives designated as hedging instruments	(0.2)	5.3	6.7	8.5
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	(0.4)	(0.7)	(0.8)	(1.5)
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]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Income into Income	4.4	5.9	(0.9)	(5.1)
Gain (loss) on fair value hedging relationships
Gain (loss) on non-designated derivative contracts	(4.5)	(1.9)	2.4	(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	$ (4.4)	$ (5.9)	$ 0.9	$ 5.1