Fair Value Disclosure Fair Value Disclosure - Impacts of Derivative Instrument on Statement of Comprehensive Income (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	$ (46.3)	$ (42.6)	$ (139.9)	$ (124.7)
Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Income into Income	(18.8)	(1.0)	(22.4)	(6.9)
Other Nonoperating Income (Expense)	(1.8)	(3.8)	(5.6)	(14.9)
Operating Lease, Expense		(11.8)		(37.5)
Cash Flow Hedging [Member] | Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Loss (Gain) Recognized in Other Comprehensive Income	1.6	0.0	1.6	0.0
Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Loss (Gain) Recognized in Other Comprehensive Income	(18.2)	(2.7)	(26.9)	(8.4)
Interest Expense [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of Loss (Gain) Reclassified from Accumulated Other Comprehensive Income into Income	0.5	1.1	2.0	3.3
Gain (loss) on non-designated derivative contracts	0.0	0.0	0.0	0.0
Interest Expense [Member] | Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
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] | Cash Flow Hedging [Member] | Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	(0.5)	(1.1)	(2.0)	(3.3)
Interest Expense [Member] | Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
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	(19.3)	(2.2)	(24.4)	(10.3)
Gain (loss) on non-designated derivative contracts	4.0	(3.0)	1.3	2.7
Other (Income) Expense [Member] | Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
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] | Cash Flow Hedging [Member] | Interest Rate Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	0.0	0.0	0.0	0.0
Other (Income) Expense [Member] | Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of gain (loss) reclassified from accumulated other comprehensive income into income	$ 19.3	2.2	$ 24.4	10.3
Operating Expense [Member] | Cash Flow Hedging [Member] | Foreign Exchange Contract [Member]
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Amount of gain (loss) reclassified from accumulated other comprehensive income into income		$ (0.1)		$ (0.1)