Share-Based Employee Compensation - Summary of Assumption and Methodologies Used to Calculate Fair Value of Share-based Compensation (Details) - Class C Common Units |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2018 |
|
| Valuation assumptions: | ||
| Risk free rate | 2.49% | |
| Expected volatility | 35.00% | |
| Dividend yield | 0.00% | |
| Discount for lack of marketability | 15.20% | |