Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Outstanding Awards) (Details)

v2.4.0.6
Stock-Based Compensation (Outstanding Awards) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Dec. 31, 2012
Options granted 4,200,000  
Interactive Group [Member] | Common Class A [Member]
    
Outstanding options 36,422,000 33,839,000
Outstanding WAEP $ 17.64 $ 16.92
Exercisable options 13,038,000  
Exercisable WAEP $ 15.70  
Options granted 4,188,000  
WAEP of grants in the period $ 21.08  
Options exercised (1,500,000)  
WAEP exercised $ 11.31  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period 105,000  
WAEP forfeited/cancelled during period $ 11.75  
Interactive Group [Member] | Series A [Member]
    
Outstanding options 36,422,000  
Outstanding WAEP $ 17.64  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term 5 years 6 months 0 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 4 years 1 month 15 days  
Aggregate intrinsic value $ 136,972  
Exercisable options 13,038,000  
Exercisable WAEP $ 15.70  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value 75,068  
Interactive Group [Member] | ERROR in label resolution.
    
Outstanding options 432,000  
Outstanding WAEP $ 17.92  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term 2 years 2 months 15 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 2 years 2 months 15 days  
Aggregate intrinsic value 1,400  
Exercisable options 432,000  
Exercisable WAEP $ 17.92  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value 1,400  
Interactive Group [Member] | Common Class B [Member]
    
Outstanding options 432,000 432,000
Outstanding WAEP $ 17.92 $ 17.92
Exercisable options 432,000  
Exercisable WAEP $ 17.92  
Options granted 0  
WAEP of grants in the period $ 0.00  
Options exercised 0  
WAEP exercised $ 0.00  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period 0  
WAEP forfeited/cancelled during period $ 0.00  
Ventures Group [Member] | Common Class A [Member]
    
Outstanding options 1,095,000 1,155,000
Outstanding WAEP $ 56.62 $ 56.26
Exercisable options 398,000  
Exercisable WAEP $ 53.41  
Options granted 0  
WAEP of grants in the period $ 0.00  
Options exercised (59,000)  
WAEP exercised $ 49.78  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period 1,000  
WAEP forfeited/cancelled during period $ 43.48  
Ventures Group [Member] | Series A [Member]
    
Outstanding options 1,095,000  
Outstanding WAEP $ 56.62  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term 5 years 6 months 0 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 4 years 2 months 15 days  
Aggregate intrinsic value 20,794  
Exercisable options 398,000  
Exercisable WAEP $ 53.41  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value 8,862  
Ventures Group [Member] | ERROR in label resolution.
    
Outstanding options 22,000  
Outstanding WAEP $ 46.69  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Vested and Expected to Vest, Outstanding, Weighted Average Remaining Contractual Term 2 years 2 months 15 days  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term 2 years 2 months 15 days  
Aggregate intrinsic value 660  
Exercisable options 22,000  
Exercisable WAEP $ 46.69  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value $ 660  
Ventures Group [Member] | Common Class B [Member]
    
Outstanding options 22,000 22,000
Outstanding WAEP $ 46.69 $ 46.69
Exercisable options 22,000  
Exercisable WAEP $ 46.69  
Options granted 0  
WAEP of grants in the period $ 0.00  
Options exercised 0  
WAEP exercised $ 0.00  
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period 0  
WAEP forfeited/cancelled during period $ 0.00