Registration of securities issued in business combination transactions

Stock Options and Other Share-Based Payments (Details 3)

v2.4.0.8
Stock Options and Other Share-Based Payments (Details 3) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 12 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Additional disclosures, stock options          
Stock-based compensation expense (in dollars) $ 10 $ 5 $ 34 $ 22 $ 18
Liberty Incentive Plan | Stock options
          
Additional disclosures, stock options          
Annualized forfeiture rate (as a percent)     10.00%    
Stock-based compensation expense (in dollars)     29 18 15
Total unrecognized compensation cost related to unvested options, net of estimated forfeitures     $ 64    
LINTA | Stock options
          
Assumptions used to determine the fair value of options as of the date of grant using the Black Scholes option pricing model          
Weighted average expected volatility (as a percent)     41.90% 44.80% 46.40%
Expected term     5 years 2 months 12 days 5 years 10 months 24 days 4 years 7 months 6 days
Risk free interest rate (as a percent)     0.80%   2.30%
Risk free interest rate, minimum (as a percent)       1.20%  
Risk free interest rate, maximum (as a percent)       2.50%  
Additional disclosures, stock options          
Weighted average life     4 years 4 years 1 month 6 days 4 years 10 months 24 days
LVNTA | Stock options
          
Assumptions used to determine the fair value of options as of the date of grant using the Black Scholes option pricing model          
Weighted average expected volatility (as a percent)     49.90%    
Expected term     4 years 10 months 24 days    
Risk free interest rate (as a percent)     0.60%    
Expected dividend yield (as a percent)     0.00%    
Additional disclosures, stock options          
Weighted average life     5 years 7 months 6 days