Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v2.4.0.6
Stock-Based Compensation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Sep. 30, 2012
Mar. 31, 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 $ 162    
Weighted average period of recognition related to unvested equity awards (in years) 2 years    
Stock-based compensation 42   17
TripAdvisor, Inc. [Member]
     
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Share-based Awards Other than Options 41    
Options granted 1,400,000    
Weighted average grant-date fair value of options $ 22.68    
Weighted average period of recognition related to unvested equity awards (in years) 3 years 1 month 15 days    
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number 9,600,000    
Exercisable options 4,300,000    
Stock-based compensation 16    
Employee Service Share-based Compensation, Nonvested Awards, Total Compensation Cost Not yet Recognized, Stock Options $ 96    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period 860,000,000    
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value $ 45.26    
Restricted Stock Units (RSUs) [Member] | TripAdvisor, Inc. [Member]
     
Weighted average period of recognition related to unvested equity awards (in years) 3 years 8 months 15 days