Quarterly report pursuant to Section 13 or 15(d)

Stockholders' Equity - Stock Repurchases (Details)

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Stockholders' Equity - Stock Repurchases (Details) - USD ($)
 1 Months Ended 3 Months Ended
Jun. 30, 2021
Jun. 30, 2021
May 31, 2021
Jan. 31, 2021
Jan. 31, 2018
Equity, Class of Treasury Stock [Line Items]          
Dollar Value of Shares Repurchased     $ 400,800,000    
Class A and Class B | 2018 Authorization          
Equity, Class of Treasury Stock [Line Items]          
Repurchase Authorization         $ 3,000,000,000.0
Class A and Class B | 2021 Authorization          
Equity, Class of Treasury Stock [Line Items]          
Repurchase Authorization       $ 2,000,000,000.0  
Class A Common Stock | 2018 Authorization          
Equity, Class of Treasury Stock [Line Items]          
Number of shares repurchased (in shares)     1,696,722    
Dollar Value of Shares Repurchased     $ 400,800,000    
Class A Common Stock | 2018 Authorization | Subsequent event          
Equity, Class of Treasury Stock [Line Items]          
Number of shares repurchased (in shares) 7,121,445 527,118      
Dollar Value of Shares Repurchased $ 1,568,700,000 $ 122,000,000.0      
Class A Common Stock | 2021 Authorization | Subsequent event          
Equity, Class of Treasury Stock [Line Items]          
Number of shares repurchased (in shares) 0        
Dollar Value of Shares Repurchased $ 0        
Class A Common Stock | 2021 Accelerated Share Repurchase Agreement | Subsequent event          
Equity, Class of Treasury Stock [Line Items]          
Repurchase Authorization $ 500,000,000.0 $ 500,000,000.0