Fair Value Disclosure Fair Value Disclosure - Impact of Cash Flow and Hedge Accounting Relationships (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Interest expense, net	$ (190.3)	$ (180.5)	$ (162.9)
Other (expense) income	(13.0)	(7.3)	(21.7)
Operating Lease, Expense	49.3	54.4	49.6
Interest Expense [Member]
Gain (loss) on fair value hedging relationships
Gain (loss) on non-designated derivative contracts		0.0	0.0
Interest Expense [Member] \| Interest Rate Contract [Member]
Gain (loss) on fair value hedging relationships
Hedged items	(4.2)	(9.0)	3.0
Derivatives designated as hedging instruments	4.2	9.0	(3.0)
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	(2.1)	(2.5)	(4.2)
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
Other (Income) Expense [Member]
Gain (loss) on fair value hedging relationships
Gain (loss) on non-designated derivative contracts	6.2	(1.7)	2.2
Other (Income) Expense [Member] \| Interest Rate Contract [Member]
Gain (loss) on fair value hedging relationships
Hedged items		0.0	0.0
Derivatives designated as hedging instruments		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
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	$ (12.8)	14.3	11.7
Operating 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	$ (0.1)

Change in Unrealized Gain (Loss) on Fair Value Value Hedge [Abstract]

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Amount of gain (loss) from the increase (decrease) in fair value of derivative and nonderivative instruments designated as fair value hedging instruments recognized in the income statement.

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Amount of the increase (decrease) in fair value of the hedged item in a fair value hedge recognized in the income statement.

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