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Stock Based Compensation - Narrative (Details)
$ / shares in Units, $ in Millions
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended
Jul. 06, 2020
shares
Feb. 08, 2019
$ / shares
shares
Dec. 31, 2020
Feb. 07, 2019
USD ($)
Jun. 30, 2020
USD ($)
Dec. 31, 2020
profitInterestUnit
shares
Dec. 31, 2021
USD ($)
shares
Dec. 31, 2020
USD ($)
shares
Dec. 31, 2019
USD ($)
profitInterestUnit
shares
Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock authorized for issuance (shares) | shares 40,000,000                  
Stock available for grant (shares) | shares             30,645,817      
Period for recognition of unrecognized compensation cost related to unvested equity awards             1 year 6 months      
Unrecognized compensation expense of outstanding stock options             $ 5.7      
Maximum contributions per employee (as a percent)             50.00%      
Stock-based compensation expense:       $ 11.7     $ 33.3 $ 45.1 $ 11.7  
Acceleration charge       10.4         56.3  
Cash value per share of stock repurchased and retired during period (USD per share) | $ / shares   $ 145                
Restricted stock and restricted stock units                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Total unrecognized compensation cost related to unvested equity awards             $ 43.8      
Period for recognition of unrecognized compensation cost related to unvested equity awards             2 years 2 months 12 days      
Stock-based compensation expense:       11.7     $ 18.7 3.1 0.0  
Service-Based Restricted Stock Units (RSUs)                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Total unrecognized compensation cost related to unvested equity awards       4.7            
Service-Based Restricted Stock Units (RSUs) | Director                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting period (in years)             1 year      
Service-Based Restricted Stock Units (RSUs) | Minimum                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting period (in years)                   3 years
Service-Based Restricted Stock Units (RSUs) | Maximum                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Vesting period (in years)                   5 years
Stock options                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock-based compensation expense:       0.0 $ 20.0   $ 3.0 $ 23.0 0.0  
Employee Stock                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Minimum contributions per employee (as a percent)     3.00%              
Maximum contributions per employee (as a percent)     15.00%              
Holding period of ESPP employer contribution               1 year    
Stock-based compensation expense:             $ 4.0      
Profit Interest Units and Phantom Units | Long-Term Incentive Plan                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock authorized for issuance (shares) | shares   19,629.25                
Vesting period (in years)             3 years      
Profit Interest Units                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Stock-based compensation expense:                 $ 56.3  
Number of equity instruments other than options converted (shares) | shares 18,245.79                  
Profit Interest Units | Long-Term Incentive Plan                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of equity instruments other than options outstanding (shares) | shares                 18,443.42  
Number of equity instruments other than options granted (shares) | shares                 18,443.42  
Class B Profit Interest Units                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of profit interest units granted (shares) | profitInterestUnit                 6,817.74  
Class C Profit Interest Units                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of profit interest units granted (shares) | profitInterestUnit           15,867.81        
Phantom Units | Long-Term Incentive Plan                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of equity instruments other than options outstanding (shares) | shares                 249.10  
Number of equity instruments other than options granted (shares) | shares               249.10    
Common Units                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Number of equity instruments other than options issued upon conversion (shares) | shares 15,055,564         13,093,367        
Number of equity instruments other than options with vesting accelerated (shares) | shares               1,342,909    
Acceleration charge               $ 3.4    
Performance-Based Restricted Stock Units (RSUs)                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Total unrecognized compensation cost related to unvested equity awards       $ 5.7            
Restricted Stock                    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                    
Total unrecognized compensation cost related to unvested equity awards             $ 2.4      
Period for recognition of unrecognized compensation cost related to unvested equity awards             2 months 26 days