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Incentive Plan - Market Performance Based Awards (Details)
$ in Millions
1 Months Ended 12 Months Ended
Feb. 27, 2024
Feb. 27, 2023
Feb. 27, 2022
Feb. 27, 2021
Feb. 27, 2020
Feb. 27, 2019
Jan. 31, 2021
shares
Jan. 31, 2020
shares
Jan. 31, 2019
shares
Dec. 31, 2020
USD ($)
item
shares
Dec. 31, 2019
USD ($)
shares
Dec. 31, 2018
USD ($)
shares
2014 Awards                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Performance period                   3 years    
2015 Awards                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Performance period                   3 years    
Market performance-based awards                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Performance period                   3 years    
Number of trials | item                   100,000    
Fair value of awards | $                   $ 17.2 $ 22.3 $ 21.8
Award requisite service period                   4 years    
Market performance-based awards | Below Threshold Level                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage                   0.00%    
Performance Threshold                   (500.00%) (300.00%) (300.00%)
Market performance-based awards | Threshold Level                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage                   25.00%    
Performance Threshold                   (500.00%) (300.00%) (300.00%)
Market performance-based awards | Target Level                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage                   50.00%    
Performance Threshold                   0.00% 100.00% 100.00%
Market performance-based awards | High Level                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage                   100.00%    
Performance Threshold                   500.00% 500.00% 500.00%
Market performance-based awards | First Vesting Period in February | 2016 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage         50.00% 50.00%            
Market performance-based awards | First Vesting Period in February | 2017 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage         50.00%              
Market performance-based awards | First Vesting Period in February | 2018 Awards                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage       50.00%                
Market performance-based awards | Second Vesting Period in February | 2017 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage       50.00%                
Market performance-based awards | Second Vesting Period in February | 2018 Awards                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage     50.00%                  
Class D Units | 2016 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting of restricted common units, net (units)                 339,317      
Class D Units | 2017 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting of restricted common units, net (units)               137,816        
Class D Units | 2018 Awards                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting of restricted common units, net (units)             240,377          
Distribution Equivalent Unit | High Level | 2016 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting of restricted common units, net (units)                       31,009
Distribution Equivalent Unit | High Level | 2017 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting of restricted common units, net (units)                     10,971  
Distribution Equivalent Unit | High Level | 2018 Awards                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting of restricted common units, net (units)                   20,725    
Restricted Stock Units (RSUs) | High Level | 2016 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting of restricted common units, net (units)                 56,778      
Restricted Stock Units (RSUs) | High Level | 2017 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting of restricted common units, net (units)               29,141        
Restricted Stock Units (RSUs) | High Level | 2018 Awards                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting of restricted common units, net (units)             63,498          
Class D And Rsu Units                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Intrinsic value of units | $                   $ 24.3 $ 32.7 $ 29.3
Scenario, Forecast | Market performance-based awards | First Vesting Period in February | 2018 Awards                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage       50.00%                
Scenario, Forecast | Market performance-based awards | First Vesting Period in February | 2019 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage     50.00%                  
Scenario, Forecast | Market performance-based awards | First Vesting Period in February | 2020 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage   50.00%                    
Scenario, Forecast | Market performance-based awards | Second Vesting Period in February | 2018 Awards                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage     50.00%                  
Scenario, Forecast | Market performance-based awards | Second Vesting Period in February | 2019 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage   50.00%                    
Scenario, Forecast | Market performance-based awards | Second Vesting Period in February | 2020 Performance Grant                        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Vesting percentage 50.00%