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Fair Value Measurements (Details)
$ in Millions
Dec. 31, 2021
USD ($)
contract
Dec. 31, 2020
USD ($)
Fair value of assets and liabilities measured on recurring basis    
Current assets held for sale $ 0.0  
Current liabilities held for sale $ 0.0  
Cash Flow Hedging    
Fair value of assets and liabilities measured on recurring basis    
Number of forward contracts | contract 1  
Fair value measurements recurring basis    
Fair value of assets and liabilities measured on recurring basis    
Short-term investments $ 44.3 $ 36.1
Forward contracts (0.4) (2.7)
Redeemable noncontrolling interest (19.0)  
Total asset 24.9 33.4
Fair value measurements recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)    
Fair value of assets and liabilities measured on recurring basis    
Short-term investments 44.3 36.1
Forward contracts 0.0 0.0
Redeemable noncontrolling interest 0.0  
Total asset 44.3 36.1
Fair value measurements recurring basis | Significant Observable Inputs (Level 2)    
Fair value of assets and liabilities measured on recurring basis    
Short-term investments 0.0 0.0
Forward contracts (0.4) (2.7)
Redeemable noncontrolling interest 0.0  
Total liability (0.4) (2.7)
Fair value measurements recurring basis | Significant Unobservable Inputs (Level 3)    
Fair value of assets and liabilities measured on recurring basis    
Short-term investments 0.0 0.0
Forward contracts 0.0 0.0
Redeemable noncontrolling interest (19.0)  
Total liability $ (19.0) $ 0.0