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Share-Based Compensation - Narrative (Details) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Number of options granted (in shares) 0 0 0 0
Intrinsic value of options exercised $ 1,800,000 $ 38,000,000.0 $ 13,300,000 $ 75,400,000
Unamortized share-based compensation expense $ 0   $ 0  
2013 Employee stock purchase plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Available for future grants (in shares) 6,202,244   6,202,244  
Unrecognized share-based compensation expense $ 2,000,000.0   $ 2,000,000.0  
Unrecognized share-based compensation expense, remaining weighted-average vesting periods     4 months 24 days  
Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized share-based compensation expense, remaining weighted-average vesting periods     2 years 10 months 24 days  
Vesting period contractual term     4 years  
Unrecognized share-based compensation expense $ 550,000,000   $ 550,000,000  
2013 Equity Incentive Plan        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Available for future grants (in shares) 22,594,284   22,594,284  
Key Employee Equity Bonus Plan | Restricted Stock Units        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Unrecognized share-based compensation expense, remaining weighted-average vesting periods     1 month 6 days  
Unrecognized share-based compensation expense $ 5,000,000   $ 5,000,000  
Number of shares issued (in shares) 196,295   277,399  
Share based compensation requisite service period recognition     4 months 24 days