Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v2.4.0.8
Stock-Based Compensation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 6 Months Ended
Jun. 30, 2013
Sep. 30, 2012
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Stockholders' Equity Note, Stock Split, Conversion Ratio   0.05      
Options granted       4,200,000  
Weighted average grant-date fair value of options       $ 8.16  
Stock-based compensation, vesting period (in years)       4 years  
Total unrecognized compensation cost related to unvested Liberty equity awards $ 143     $ 143  
Weighted average period of recognition related to unvested equity awards (in years)       2 years 1 month 6 days  
Stock-based compensation 44   18 86 35
TripAdvisor, Inc. [Member]
         
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options 41     41  
Options granted       1,600,000  
Weighted average grant-date fair value of options       $ 23.15  
Weighted average period of recognition related to unvested equity awards (in years)       2 years 10 months 24 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 9,000,000     9,000,000  
Exercisable options 3,800,000     3,800,000  
Stock-based compensation 14     30  
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options $ 90     $ 90  
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period       994,000  
Restricted Stock Units (RSUs) [Member] | TripAdvisor, Inc. [Member]
         
Weighted average period of recognition related to unvested equity awards (in years)       3 years 6 months