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Acquisitions and Other Investments - Additional Information (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2019
USD ($)
Business
Dec. 31, 2018
USD ($)
Business
Dec. 31, 2017
Business
Acquisitions And Other Investments [Line Items]      
Cash consideration paid, net of cash acquired $ 110 $ 24  
Cost method investments $ 2    
Series of Individually Immaterial Business Acquisition      
Acquisitions And Other Investments [Line Items]      
Number of business acquired | Business 3 1 0
Acquisition-related costs expensed as incurred $ 2    
Total acquisition purchase price 110    
Cash consideration paid, net of cash acquired 108 $ 23  
Cash acquired from acquisition 2    
Purchase price consideration $ 110 [1] $ 23 [2]  
SinglePlatform      
Acquisitions And Other Investments [Line Items]      
Percentage of ownership interests acquired 100.00%    
Date of acquisition Dec. 31, 2019    
BookaTable      
Acquisitions And Other Investments [Line Items]      
Percentage of ownership interests acquired 100.00%    
Date of acquisition Dec. 31, 2019    
Restorando      
Acquisitions And Other Investments [Line Items]      
Percentage of ownership interests acquired 100.00%    
Date of acquisition Feb. 28, 2019    
[1] Subject to adjustment based on (i) final working capital adjustment calculations; and (ii) indemnification obligations for general representations and warranties of certain acquired company stockholders.
[2] Subject to adjustment based on indemnification obligations for general representations and warranties of certain acquired company stockholders.