Annual report pursuant to Section 13 and 15(d)

Assets and Liabilities Measured at Fair Value - Realized and Unrealized Gains (Losses) (Details)

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Assets and Liabilities Measured at Fair Value - Realized and Unrealized Gains (Losses) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Realized and unrealized gains (losses) on financial instruments, net $ 251 $ (19) $ 36
Exchangeable Senior Debentures due 2051      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Credit risk on fair value debt instruments gains (losses) 7    
Debt issuance costs 5    
Exchangeable Senior Debentures due 2051      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Realized and unrealized gains (losses) on financial instruments, net 50    
Financial instrument liabilities      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Realized and unrealized gains (losses) on financial instruments, net 199 (20) 35
Tripadvisor Foreign Currency Forward Contracts      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Realized and unrealized gains (losses) on financial instruments, net $ 2 $ 1 $ 1