Financial Instruments (Schedule of Risk Management Instruments) (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Carrying Amount | Designated as Hedging Instrument | Cross-currency interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent liabilities		$ (20.1)
Carrying Amount | Not Designated as Hedging Instrument | Foreign currency exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	$ 41.1	18.4
Other current liabilities	(15.2)	(11.9)
Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent liabilities		(20.1)
Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent liabilities		0.0
Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent liabilities		(20.1)
Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent liabilities		0.0
Fair Value | Not Designated as Hedging Instrument | Foreign currency exchange contracts
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	41.1	18.4
Other current liabilities	(15.2)	(11.9)
Fair Value | Not Designated as Hedging Instrument | Foreign currency exchange contracts | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	0.0	0.0
Other current liabilities	0.0	0.0
Fair Value | Not Designated as Hedging Instrument | Foreign currency exchange contracts | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	41.1	18.4
Other current liabilities	(15.2)	(11.9)
Fair Value | Not Designated as Hedging Instrument | Foreign currency exchange contracts | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	0.0	0.0
Other current liabilities	0.0	0.0
Fair value hedges | Carrying Amount | Designated as Hedging Instrument | Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	158.9	72.0
Fair value hedges | Fair Value | Designated as Hedging Instrument | Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	158.9	72.0
Fair value hedges | Fair Value | Designated as Hedging Instrument | Interest Rate Contract | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	0.0	0.0
Fair value hedges | Fair Value | Designated as Hedging Instrument | Interest Rate Contract | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	158.9	72.0
Fair value hedges | Fair Value | Designated as Hedging Instrument | Interest Rate Contract | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	0.0	0.0
Cash flow hedges | Carrying Amount | Designated as Hedging Instrument | Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	38.1	43.3
Other noncurrent liabilities	(97.8)
Cash flow hedges | Carrying Amount | Designated as Hedging Instrument | Cross-currency interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	34.4	3.0
Other noncurrent liabilities	(2.9)
Cash flow hedges | Fair Value | Designated as Hedging Instrument | Interest Rate Contract
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	38.1	43.3
Other noncurrent liabilities	(97.8)
Cash flow hedges | Fair Value | Designated as Hedging Instrument | Interest Rate Contract | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	0.0	0.0
Other noncurrent liabilities	0.0
Cash flow hedges | Fair Value | Designated as Hedging Instrument | Interest Rate Contract | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	38.1	43.3
Other noncurrent liabilities	(97.8)
Cash flow hedges | Fair Value | Designated as Hedging Instrument | Interest Rate Contract | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	0.0	0.0
Other noncurrent liabilities	0.0
Cash flow hedges | Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	34.4	3.0
Other noncurrent liabilities	(2.9)
Cash flow hedges | Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	0.0	0.0
Other noncurrent liabilities	0.0
Cash flow hedges | Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	34.4	3.0
Other noncurrent liabilities	(2.9)
Cash flow hedges | Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	0.0	0.0
Other noncurrent liabilities	0.0
Net investment hedges | Carrying Amount | Designated as Hedging Instrument | Cross-currency interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets		45.1
Other current liabilities	(92.6)	(21.4)
Other noncurrent liabilities	(97.2)	(5.7)
Net investment hedges | Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets		45.1
Other current liabilities	(92.6)	(21.4)
Other noncurrent liabilities	(97.2)	(5.7)
Net investment hedges | Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets		0.0
Other current liabilities	0.0	0.0
Other noncurrent liabilities	0.0	0.0
Net investment hedges | Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets		45.1
Other current liabilities	(92.6)	(21.4)
Other noncurrent liabilities	(97.2)	(5.7)
Net investment hedges | Fair Value | Designated as Hedging Instrument | Cross-currency interest rate swaps | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets		0.0
Other current liabilities	0.0	0.0
Other noncurrent liabilities	$ 0.0	$ 0.0