Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Deferred Merchant Payables, Certain Risks and Concentrations, Earnings (Loss) per Common Share (Details)

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Summary of Significant Accounting Policies - Deferred Merchant Payables, Certain Risks and Concentrations, Earnings (Loss) per Common Share (Details)
shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2021
USD ($)
item
shares
Dec. 31, 2020
USD ($)
item
shares
Dec. 31, 2019
USD ($)
item
shares
Numerator      
Net earnings (loss) attributable to Liberty TripAdvisor Holdings, Inc. shareholders | $ $ 179 $ (238) $ (22)
Less: Series A Preferred Stock carrying value adjustment and transaction costs | $ 370 150  
Net earnings (loss) available to common shareholders | $ $ (191) $ (388) $ (22)
Denominator      
Basic WASO (in shares) 75 75 75
Potentially dilutive shares (in shares) 2 1  
Diluted WASO (in shares) 77 76 75
TripAdvisor      
Product Information [Line Items]      
Deferred merchant payable | $ $ 113 $ 36  
Number of most significant travel partners | item 2 2 2
TripAdvisor | Expedia and Booking Holdings Inc. | Customer | Revenue      
Product Information [Line Items]      
Customer concentration (as a percent) 34.00% 25.00% 33.00%
Stock Options      
Earnings (Loss) Per Common Share (EPS)      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 3 1 2
Preferred Stock Put Option      
Earnings (Loss) Per Common Share (EPS)      
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount 3 13