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Stock And Unit-Based Compensation - Summary of Stock and Unit Based Compensation Award Valuation Assumptions (Details)
6 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]    
Risk-free rate 0.20% 0.14%
Volatility 40.00% 80.00%
Time to liquidity event (years) 3 years 2 years
Discount for lack of marketability (DLOM) 20.00 0