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Stockholders' Equity - Additional Information (Details)
Dec. 31, 2019
USD ($)
vote
$ / shares
Dec. 31, 2018
$ / shares
Equity [Abstract]    
Common stock, par value (in dollars per share) | $ / shares $ 0.0005 $ 0.0005
Common stock, number of votes per share | vote 1  
Share repurchase program, authorized amount $ 1,200,000,000  
Stock repurchase program, remaining authorized repurchase amount $ 700,000,000