Financial Instruments (Risk Management Instruments) (Details) - USD ($) $ in Millions	Sep. 30, 2021	Dec. 31, 2020
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability, other noncurrent liabilities	$ (70.7)
Carrying Amount | Foreign currency exchange contracts | Not Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	5.5	$ 41.1
Other current liabilities	(25.7)	(15.2)
Estimate of Fair Value Measurement
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability, other noncurrent liabilities	(70.7)
Estimate of Fair Value Measurement | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability, other noncurrent liabilities	0.0
Estimate of Fair Value Measurement | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability, other noncurrent liabilities	0.0
Estimate of Fair Value Measurement | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Contingent consideration liability, other noncurrent liabilities	(70.7)
Estimate of Fair Value Measurement | Foreign currency exchange contracts | Not Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	5.5	41.1
Other current liabilities	(25.7)	(15.2)
Estimate of Fair Value Measurement | Foreign currency exchange contracts | Not Designated as Hedging Instrument | 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
Estimate of Fair Value Measurement | Foreign currency exchange contracts | Not Designated as Hedging Instrument | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	5.5	41.1
Other current liabilities	(25.7)	(15.2)
Estimate of Fair Value Measurement | Foreign currency exchange contracts | Not Designated as Hedging Instrument | 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 Hedging | Carrying Amount | Interest rate contracts | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	8.5
Other noncurrent assets	87.2	158.9
Other noncurrent liabilities	(2.2)
Fair Value Hedging | Estimate of Fair Value Measurement | Interest rate contracts | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	8.5
Other noncurrent assets	87.2	158.9
Other noncurrent liabilities	(2.2)
Fair Value Hedging | Estimate of Fair Value Measurement | Interest rate contracts | Designated as Hedging Instrument | 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
Other noncurrent assets	0.0	0.0
Other noncurrent liabilities	0.0
Fair Value Hedging | Estimate of Fair Value Measurement | Interest rate contracts | Designated as Hedging Instrument | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	8.5
Other noncurrent assets	87.2	158.9
Other noncurrent liabilities	(2.2)
Fair Value Hedging | Estimate of Fair Value Measurement | Interest rate contracts | Designated as Hedging Instrument | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	0.0
Other noncurrent assets	0.0	0.0
Other noncurrent liabilities	0.0
Cash Flow Hedging | Carrying Amount | Interest rate contracts | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	77.3	38.1
Other noncurrent liabilities		(97.8)
Cash Flow Hedging | Carrying Amount | Cross-currency interest rate swaps | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	10.8	34.4
Other noncurrent liabilities	(23.0)	(2.9)
Cash Flow Hedging | Estimate of Fair Value Measurement | Interest rate contracts | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	77.3	38.1
Other noncurrent liabilities		(97.8)
Cash Flow Hedging | Estimate of Fair Value Measurement | Interest rate contracts | Designated as Hedging Instrument | 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 Hedging | Estimate of Fair Value Measurement | Interest rate contracts | Designated as Hedging Instrument | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	77.3	38.1
Other noncurrent liabilities		(97.8)
Cash Flow Hedging | Estimate of Fair Value Measurement | Interest rate contracts | Designated as Hedging Instrument | 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 Hedging | Estimate of Fair Value Measurement | Cross-currency interest rate swaps | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	10.8	34.4
Other noncurrent liabilities	(23.0)	(2.9)
Cash Flow Hedging | Estimate of Fair Value Measurement | Cross-currency interest rate swaps | Designated as Hedging Instrument | 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	0.0
Cash Flow Hedging | Estimate of Fair Value Measurement | Cross-currency interest rate swaps | Designated as Hedging Instrument | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other noncurrent assets	10.8	34.4
Other noncurrent liabilities	(23.0)	(2.9)
Cash Flow Hedging | Estimate of Fair Value Measurement | Cross-currency interest rate swaps | Designated as Hedging Instrument | 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	0.0
Net investment hedges | Carrying Amount | Cross-currency interest rate swaps | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	18.7
Other noncurrent assets	38.7
Other current liabilities	(17.0)	(92.6)
Other noncurrent liabilities	(9.5)	(97.2)
Net investment hedges | Estimate of Fair Value Measurement | Cross-currency interest rate swaps | Designated as Hedging Instrument
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	18.7
Other noncurrent assets	38.7
Other current liabilities	(17.0)	(92.6)
Other noncurrent liabilities	(9.5)	(97.2)
Net investment hedges | Estimate of Fair Value Measurement | Cross-currency interest rate swaps | Designated as Hedging Instrument | 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
Other noncurrent assets	0.0
Other current liabilities	0.0	0.0
Other noncurrent liabilities	0.0	0.0
Net investment hedges | Estimate of Fair Value Measurement | Cross-currency interest rate swaps | Designated as Hedging Instrument | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	18.7
Other noncurrent assets	38.7
Other current liabilities	(17.0)	(92.6)
Other noncurrent liabilities	(9.5)	(97.2)
Net investment hedges | Estimate of Fair Value Measurement | Cross-currency interest rate swaps | Designated as Hedging Instrument | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Other receivables	0.0
Other noncurrent assets	0.0
Other current liabilities	0.0	0.0
Other noncurrent liabilities	$ 0.0	$ 0.0