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Financial Instruments - Fair Value Measurements and Related Valuation Techniques and Fair Value Hierarchy Level (Details) - USD ($)
$ in Millions
Oct. 03, 2020
Dec. 31, 2019
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Asset (Liability) $ (11.1) $ 45.9
Recurring    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Marketable equity securities 50.8 59.2
Recurring | Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Marketable equity securities 50.8 59.2
Recurring | Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Marketable equity securities 0.0 0.0
Recurring | Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Marketable equity securities 0.0 0.0
Recurring | Net investment hedges    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Asset (Liability) (7.9) (4.4)
Recurring | Net investment hedges | Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Asset (Liability) 0.0 0.0
Recurring | Net investment hedges | Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Asset (Liability) (7.9) (4.4)
Recurring | Net investment hedges | Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Asset (Liability) 0.0 0.0
Recurring | Foreign currency contracts    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Asset (Liability) (3.2) 50.3
Recurring | Foreign currency contracts | Level 1    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Asset (Liability) 0.0 0.0
Recurring | Foreign currency contracts | Level 2    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Asset (Liability) (3.2) 50.3
Recurring | Foreign currency contracts | Level 3    
Fair Value Measurement Inputs and Valuation Techniques [Line Items]    
Asset (Liability) $ 0.0 $ 0.0