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Stock-Based Compensation Expense and Employee Benefit Plans - Equity Incentive Plan Narrative (Details) - $ / shares
12 Months Ended
Mar. 31, 2021
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of additional shares authorized, percent   4.00%    
Weighted average exercise price, outstanding options (in dollars per share)   $ 21.23 $ 21.27 $ 20.76
RSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares)   6,475,536 4,744,467  
2012 Equity Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Weighted average exercise price, outstanding options (in dollars per share)   $ 27.52    
Number of common stock reserved for issuance (in shares)   0    
2012 Equity Incentive Plan | Class B common stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation vesting period   4 years    
Expiration period   10 years    
Number of outstanding options (in shares)   6,891,128    
2018 Equity Incentive Plan | RSUs        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Granted (in shares) 8,367,663      
2018 Equity Incentive Plan | Class B common stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period   10 years    
2018 Equity Incentive Plan | Class B common stock | Minimum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation vesting period   3 years    
2018 Equity Incentive Plan | Class B common stock | Maximum        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock-based compensation vesting period   4 years    
2018 Equity Incentive Plan | Class A common stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of outstanding options (in shares)   3,797,391    
Weighted average exercise price, outstanding options (in dollars per share)   $ 9.70    
Number of common stock reserved for issuance (in shares)   23,999,768