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Share-Based and Other Compensation - 2018 Special Market-Based RSU Grant (Details) - USD ($)
$ / shares in Units, $ in Millions
1 Months Ended 12 Months Ended
Dec. 27, 2018
Dec. 31, 2018
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
December 2018 Market-Based RSUs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Grants in period (in shares) 80,647 346,777      
Vesting criteria, one (percent)   75.00% 75.00%    
Fair value RSUs granted $ 23.8        
Vesting criteria, two (percent)   25.00%      
Fair value per share on valuation date (in dollars per share) $ 68.66   $ 68.66 $ 68.66 $ 68.66
Award vesting period     3 years    
Expected share price volatility 23.00%        
Risk-free interest rate 2.40%        
December 2018 Market-Based RSUs | Chairman And Chief Executive Officer          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Grants in period (in shares) 266,130        
December 2018 Market-Based RSUs, TSR          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Target percent     100.00%    
Award vesting period     4 years    
Minimum | December 2018 Market-Based RSUs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Target percent   0.00% 0.00%    
Target percent achieved     0.00%    
Maximum | December 2018 Market-Based RSUs          
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]          
Target percent   200.00% 200.00%