v3.23.1
Employee Incentive Plans - Restricted and Performance Awards (Details) - USD ($)
$ / shares in Units, $ in Millions
 3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Unvested unit-based awards    
Number of Units    
Non-vested, beginning of period (in shares) 6,775,186  
Granted (in shares) 1,244,629  
Vested (in shares) (2,201,569)  
Forfeited (in shares) (55,101)  
Non-vested, end of period (in shares) 5,763,145  
Aggregate intrinsic value, end of period $ 62.5  
Weighted Average Grant-Date Fair Value    
Non-vested, beginning of period (in dollars per share) $ 5.89  
Granted (in dollars per share) 10.85  
Vested (in dollars per share) 6.07  
Forfeited (in dollars per share) 5.61  
Non-vested, end of period (in dollars per share) $ 6.90  
Units withheld for payroll taxes (in shares) 658,435  
Aggregate intrinsic value of units vested $ 27.1 $ 7.6
Fair value of units vested 13.4 10.7
Unrecognized compensation cost related to non-vested restricted incentive units $ 25.2  
Unrecognized compensation costs, weighted average period for recognition (in years) 2 years  
Performance units    
Number of Units    
Non-vested, beginning of period (in shares) 2,979,154  
Granted (in shares) 420,128  
Vested (in shares) (899,919)  
Non-vested, end of period (in shares) 2,499,363  
Aggregate intrinsic value, end of period $ 27.1  
Weighted Average Grant-Date Fair Value    
Non-vested, beginning of period (in dollars per share) $ 6.44  
Granted (in dollars per share) 11.67  
Vested (in dollars per share) 9.03  
Non-vested, end of period (in dollars per share) $ 6.39  
Units withheld for payroll taxes (in shares) 668,829  
Aggregate intrinsic value of units vested $ 22.0 5.6
Fair value of units vested 8.1 $ 11.0
Unrecognized compensation cost related to non-vested restricted incentive units $ 13.8  
Unrecognized compensation costs, weighted average period for recognition (in years) 2 years  
Performance Units:    
Beginning TSR Price (in dollars per share) $ 10.40  
Grant-date fair value (in dollars per share) $ 11.67  
Risk-free interest rate (as a percent) 3.76%  
Volatility factor (as a percent) 64.00%  
Performance units | Minimum    
Performance Units:    
Percent of units vesting (as a percent) 0.00%  
Performance units | Maximum    
Performance Units:    
Percent of units vesting (as a percent) 200.00%