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Stock-Based Compensation (Details Textual) - USD ($)
shares in Millions, $ in Millions
12 Months Ended 66 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2020
Stock Based Compensation (Textual) [Abstract]        
Stock-based compensation expense $ 70.1 $ 45.9 $ 55.3  
Income tax benefit 10.0 8.4 8.0  
Employee share purchase plan       1.1
Cash-settleable Liability Awards [Member]        
Stock Based Compensation (Textual) [Abstract]        
Stock-based compensation expense $ 0.9 $ 1.6 $ 7.0  
Employee Stock [Member]        
Stock Based Compensation (Textual) [Abstract]        
Shares authorized for grant 2.4      
2012 Management Equity Plan [Member]        
Stock Based Compensation (Textual) [Abstract]        
Shares authorized for grant     10.1  
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant 0.0      
2015 Management Equity Plan [Member]        
Stock Based Compensation (Textual) [Abstract]        
Shares authorized for grant 12.4      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number 2.0      
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period       4.0