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Stock-Based Compensations (Grants) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified |
3 Months Ended | 12 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2009
|
Dec. 31, 2011
|
Dec. 31, 2013
|
Dec. 31, 2013
Interactive Group [Member]
|
Dec. 31, 2012
Interactive Group [Member]
|
Dec. 31, 2013
Interactive Group [Member]
Common Class B [Member]
|
Dec. 31, 2013
Interactive Group [Member]
Series A [Member]
|
Dec. 31, 2013
Interactive Group [Member]
Series B [Member]
|
Dec. 31, 2012
Interactive Group [Member]
Series A [Member]
|
Dec. 31, 2013
Interactive Group [Member]
Series A [Member]
|
Dec. 31, 2012
Interactive Group [Member]
Series A [Member]
|
Dec. 31, 2011
Interactive Group [Member]
Series A [Member]
|
Dec. 31, 2013
Ventures Group [Member]
|
Dec. 31, 2012
Ventures Group [Member]
|
Dec. 31, 2013
Ventures Group [Member]
Common Class B [Member]
|
Dec. 31, 2013
Ventures Group [Member]
Series B [Member]
|
Dec. 31, 2012
Ventures Group [Member]
Series A [Member]
|
Mar. 31, 2012
Ventures Group [Member]
Series A [Member]
|
Dec. 31, 2013
Ventures Group [Member]
Series A [Member]
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term | 10 years | 1 year 4 months 24 days | 5 years | 5 years | 1 year 4 months 24 days | 5 years | |||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Minimum | 44.80% | 38.30% | 28.20% | 43.70% | 47.50% | ||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Weighted Average Grant Date Fair Value | $ 7.15 | $ 8.26 | $ 8.44 | $ 7.32 | $ 26.58 | $ 27.29 | $ 57.37 | ||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility Rate, Maximum | 47.50% | 38.70% | 47.50% | 49.90% | 49.90% | ||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward] | |||||||||||||||||||
| Outstanding options, Beginning Balance | 33,839,000 | 432,000 | 33,839,000 | 1,155,000 | 22,000 | ||||||||||||||
| Options granted | 4,296,000 | 0 | 20,100,000 | 4,300,000 | 3,400,000 | 6,200,000 | 7,000 | 0 | 900,000 | 0 | 7,000 | ||||||||
| Options exercised | (6,933,000) | 0 | (6,933,000) | (195,000) | 0 | ||||||||||||||
| Options forfeited/cancelled | (595,000) | 0 | (595,000) | (1,000) | 0 | ||||||||||||||
| Outstanding options, Ending Balance | 30,607,000 | 432,000 | 30,607,000 | 1,155,000 | 22,000 | 966,000 | |||||||||||||
| Exercisable options | 14,056,000 | 432,000 | 14,056,000 | 492,000 | 22,000 | ||||||||||||||
| Outstanding WAEP, Beginning of Period | $ 40.18 | $ 16.92 | $ 17.92 | $ 56.26 | $ 46.69 | ||||||||||||||
| WAEP granted | $ 21.25 | $ 0.00 | $ 116.03 | $ 0.00 | |||||||||||||||
| WAEP exercised | $ 15.05 | $ 0.00 | $ 52.81 | $ 0.00 | |||||||||||||||
| WAEP forfeited/cancelled | $ 15.28 | $ 0.00 | $ 45.28 | $ 0.00 | |||||||||||||||
| Outstanding WAEP, End of Period | $ 40.18 | $ 17.98 | $ 17.92 | $ 57.42 | $ 56.26 | $ 46.69 | |||||||||||||
| Exercisable WAEP | $ 30.11 | $ 16.47 | $ 17.92 | $ 55.47 | $ 46.69 | ||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | 1 year 4 months 24 days | 4 years 4 months 24 days | 4 years 4 months 24 days | 1 year 4 months 24 days | 4 years 7 months 6 days | ||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Intrinsic Value | $ 4,955 | $ 348,277 | $ 1,631 | $ 62,981 | |||||||||||||||
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | $ 186,000 | $ 4,955 | $ 181,315 | $ 1,631 | $ 33,042 | ||||||||||||||