Financial Instruments (Schedule of Risk Management Instruments) (Details) - USD ($) $ in Millions	Dec. 31, 2019	Dec. 31, 2018
Carrying Amount | Not 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		$ (25.8)
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	$ 18.4	11.3
Other current liabilities	(11.9)	(16.3)
Fair Value | Not 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		(25.8)
Fair Value | Not 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 | Not 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		(25.8)
Fair Value | Not 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	18.4	11.3
Other current liabilities	(11.9)	(16.3)
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	18.4	11.3
Other current liabilities	(11.9)	(16.3)
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 | 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 current liabilities		0.0
Fair value hedges | 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 current liabilities		(22.3)
Fair value hedges | 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 current liabilities		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	72.0	4.5
Other current liabilities		(22.3)
Other noncurrent liabilities		(19.0)
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	72.0	4.5
Other current liabilities		(22.3)
Other noncurrent liabilities		(19.0)
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
Other noncurrent liabilities		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	72.0	4.5
Other noncurrent liabilities		(19.0)
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
Other noncurrent liabilities		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	43.3
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	3.0
Other noncurrent liabilities	(20.1)
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	43.3
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
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	43.3
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
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	3.0
Other noncurrent liabilities	(20.1)
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
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	3.0
Other noncurrent liabilities	(20.1)
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
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	8.2
Other receivables		69.2
Other current liabilities	(21.4)	(9.2)
Other noncurrent liabilities	(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	8.2
Other receivables		69.2
Other current liabilities	(21.4)	(9.2)
Other noncurrent liabilities	(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	0.0
Other receivables		0.0
Other current liabilities	0.0	0.0
Other noncurrent liabilities	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	8.2
Other receivables		69.2
Other current liabilities	(21.4)	(9.2)
Other noncurrent liabilities	(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	0.0
Other receivables		0.0
Other current liabilities	0.0	$ 0.0
Other noncurrent liabilities	$ 0.0