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Description of Business and Basis of Presentation - Additional Information (Details) - USD ($)
12 Months Ended
Apr. 09, 2019
Apr. 02, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Description Of Business And Basis Of Presentation [Line Items]          
Price per share (in dollars per share)     $ 43.02 $ 47.37 $ 35.47
Proceeds from issuance of common stock in initial public offering, net of underwriting commissions, offering costs and reimbursements     $ 2,484,029,000 $ 0 $ 0
Offering costs     $ 0 $ 2,100,000  
Common stock, shares authorized (in shares)     0 340,000,000  
Preferred stock, shares authorized (in shares)     1,000,000,000 0  
Common stock, shares outstanding (in shares)     0 22,438,472  
Class A Common Stock          
Description Of Business And Basis Of Presentation [Line Items]          
Underwriting discounts and commissions   $ 70,300,000      
Offering costs   $ 7,700,000      
Common stock, shares authorized (in shares)     18,000,000,000 0  
Common stock, shares outstanding (in shares)   255,007,393 293,793,151 0  
Class A Common Stock | IPO          
Description Of Business And Basis Of Presentation [Line Items]          
Issuance of common stock in connection with initial public offering, net of offering costs, underwriting discounts and commissions (in shares)   32,500,000      
Price per share (in dollars per share)   $ 72.00      
Proceeds from issuance of common stock in initial public offering, net of underwriting commissions, offering costs and reimbursements   $ 2,500,000,000      
Class A Common Stock | Exercise by Underwriters' Option to Purchase Additional Shares          
Description Of Business And Basis Of Presentation [Line Items]          
Issuance of common stock in connection with initial public offering, net of offering costs, underwriting discounts and commissions (in shares) 2,996,845        
Price per share (in dollars per share) $ 72.00        
Redeemable Convertible Preferred Stock          
Description Of Business And Basis Of Presentation [Line Items]          
Conversion of stock, shares converted (in shares)   219,175,709      
Class B Common Stock          
Description Of Business And Basis Of Presentation [Line Items]          
Common stock, shares authorized (in shares)     100,000,000 0  
Common stock, shares outstanding (in shares)   12,779,709 8,802,629 0