Annual report pursuant to Section 13 and 15(d)

TripAdvisor Inc Acquisitions and Dispositions (Details)

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TripAdvisor Inc Acquisitions and Dispositions (Details)
$ in Millions
12 Months Ended
Dec. 31, 2016
USD ($)
item
Dec. 31, 2015
USD ($)
item
Dec. 31, 2017
USD ($)
Acquisitions      
Goodwill $ 3,694 $ 3,689 $ 2,445
Trip Advisor | 2015 Acquisitions      
TripAdvisor, Inc. transactions      
Cash consideration for acquisition   $ 28  
Acquisitions      
Number of businesses acquired | item   3  
Net assets (including acquired cash)   $ 1  
Goodwill   17  
Intangible assets   12  
Tangible Assets   1  
Deferred tax liabilities, net   (2)  
Total purchase price consideration   $ 28  
Definite-lived intangible assets weighted-average life   6 years  
Trip Advisor | 2015 Acquisitions | Trade Names      
Acquisitions      
Intangible assets   $ 2  
Trip Advisor | 2015 Acquisitions | Customer Lists and Relationships      
Acquisitions      
Intangible assets   7  
Trip Advisor | 2015 Acquisitions | Technology-Based Intangible Assets      
Acquisitions      
Intangible assets   $ 3  
Trip Advisor | 2016 Acquisitions      
TripAdvisor, Inc. transactions      
Acquisition purchase price 34    
Cash consideration for acquisition 28    
Cash Acquired from Acquisition 4    
Business Combination, Contingent Consideration, Liability $ 2    
Acquisitions      
Number of businesses acquired | item 5    
Goodwill $ 17    
Intangible assets 25    
Net liabilities assumed (8)    
Total purchase price consideration $ 34    
Definite-lived intangible assets weighted-average life 6 years    
Trip Advisor | 2016 Acquisitions | Trade Names      
Acquisitions      
Intangible assets $ 4    
Trip Advisor | 2016 Acquisitions | Customer Lists and Relationships      
Acquisitions      
Intangible assets 4    
Trip Advisor | 2016 Acquisitions | Subscriber Relationships      
Acquisitions      
Intangible assets 5    
Trip Advisor | 2016 Acquisitions | Technology-Based Intangible Assets      
Acquisitions      
Intangible assets $ 12