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Stock-Based Compensation - Additional Information (Detail)
$ / shares in Units, $ in Millions
3 Months Ended
Feb. 09, 2016
$ / shares
shares
Mar. 31, 2020
USD ($)
plan
$ / shares
shares
Dec. 31, 2019
$ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Number of stock incentive plans | plan   2  
Common stock, par value (in usd per share) | $ / shares   $ 0.0001 $ 0.0001
Restricted Stock Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation cost not yet recognized | $   $ 67.7  
Stock Option Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation cost not yet recognized | $   $ 4.2  
2013 Stock Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock reserved for future awards (in shares)   38,000,000  
Shares available for grant (in shares)   4,870,928  
Stock options, granted (in shares)   0  
2013 Stock Incentive Plan | Restricted Stock Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award shares granted for vesting (in shares)   0  
Compensation cost not yet recognized, period for recognition   2 years 3 months 18 days  
Vesting period (in years)   4 years  
2013 Stock Incentive Plan | Stock Option Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Compensation cost not yet recognized, period for recognition   1 year 4 months 24 days  
2013 Stock Incentive Plan | Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award shares granted for vesting (in shares)   8,548,413  
Vesting period (in years)   3 years  
2011 Stock Incentive Plan      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Common stock reserved for future awards (in shares) 10,000,000    
Shares available for grant (in shares)   8,913,315  
Common stock, par value (in usd per share) | $ / shares $ 0.01    
Stock options, granted (in shares)   0  
2011 Stock Incentive Plan | Stock Option Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Stock options, granted (in shares) 2,143,987    
2011 Stock Incentive Plan | Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award shares granted for vesting (in shares) 2,202,846 0  
Share-based Compensation Award, Tranche One | 2017 CEO Award | Stock Option Awards      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Awards expected to vest outstanding (percent)   33.30%  
Minimum | 2013 Stock Incentive Plan | Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years)   3 years  
Maximum | 2011 Stock Incentive Plan | Restricted Stock Units      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Vesting period (in years)   4 years