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Equity-Based Compensation - Restricted Stock Unit Activity (Details) - Restricted Stock Units (RSUs) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Number of Units (in shares):      
Nonvested beginning of period (in shares) 92,436    
Grants (in shares) 373,530    
Vested (in shares) (20,340)    
Forfeited (in shares) (8,102)    
Nonvested end of period (in shares) 437,524 92,436  
Equity Instruments Other Than Options, Weighted Average Grant Date Fair Value (in dollars per share):      
Beginning nonvested, weighted average grant date fair value (in dollars per share) $ 107.88    
Granted, weighted average grant date fair value (in dollars per share) 172.96 $ 112.55 $ 103.24
Vested, weighted average grant date fair value (in dollars per share 101.06    
Forfeited, weighted average grant date fair value (in dollars per share 160.90    
Ending nonvested, weighted average grant date fair value (in dollars per share) $ 163.82 $ 107.88  
Vested in period, fair value (less than) $ 2 $ 12 $ 4