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Stock-Based Compensation (Outstanding Awards) (Details) (USD $)
In Thousands, except Share data, unless otherwise specified |
12 Months Ended | 3 Months Ended | 12 Months Ended | 12 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | 12 Months Ended | 3 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Dec. 31, 2011
|
Dec. 31, 2010
|
Dec. 31, 2012
Ventures Group [Member]
|
Dec. 31, 2012
Ventures Group [Member]
|
Dec. 31, 2011
Ventures Group [Member]
|
Dec. 31, 2012
Ventures Group [Member]
Class B [Member]
|
Aug. 09, 2012
Ventures Group [Member]
Class B [Member]
|
Dec. 31, 2011
Ventures Group [Member]
Class B [Member]
|
Dec. 31, 2012
Ventures Group [Member]
Series A [Member]
|
Aug. 09, 2012
Ventures Group [Member]
Series A [Member]
|
Dec. 31, 2012
Interactive Group [Member]
|
Dec. 31, 2012
Interactive Group [Member]
|
Dec. 31, 2012
Interactive Group [Member]
Class B [Member]
|
Aug. 09, 2012
Interactive Group [Member]
Class B [Member]
|
Dec. 31, 2011
Interactive Group [Member]
Class B [Member]
|
Dec. 31, 2012
Interactive Group [Member]
Series A [Member]
|
Aug. 09, 2012
Interactive Group [Member]
Series A [Member]
|
Dec. 31, 2011
Interactive Group [Member]
Series A [Member]
|
Dec. 31, 2012
Option Exchange [Member]
Ventures Group [Member]
|
Dec. 31, 2012
Option Exchange [Member]
Ventures Group [Member]
Class B [Member]
|
Dec. 31, 2012
Option Exchange [Member]
Ventures Group [Member]
Class B [Member]
|
Dec. 31, 2012
Option Exchange [Member]
Interactive Group [Member]
Class B [Member]
|
Dec. 31, 2012
Option Exchange [Member]
Interactive Group [Member]
Class B [Member]
|
Dec. 31, 2012
Option Exchange [Member]
Interactive Group [Member]
Series A [Member]
|
|
| Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value | Ìý | Ìý | $ 4.82 | $ 4.82 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 13.13 | $ 13.13 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Outstanding options | Ìý | Ìý | 1,155,000 | 1,155,000 | 0 | 22,000 | Ìý | 0 | 1,155,000 | Ìý | Ìý | Ìý | 432,000 | Ìý | 450,000 | 33,839,000 | Ìý | 45,223,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Outstanding WAEP | Ìý | Ìý | $ 56.26 | $ 56.26 | $ 0.00 | $ 46.69 | Ìý | $ 0.00 | $ 56.26 | Ìý | Ìý | Ìý | $ 17.92 | Ìý | $ 19.74 | $ 16.92 | Ìý | $ 12.06 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Net of Forfeitures | 6,200,000 | 10,600,000 | 900,000 | 36,000 | Ìý | 0 | Ìý | Ìý | Ìý | Ìý | 20,100,000 | 3,413,000 | 0 | Ìý | Ìý | 3,413,000 | Ìý | Ìý | (1,174,000) | Ìý | 0 | Ìý | 0 | (24,706,000) |
| Share-based Compensation Arrangements by Share-based Payment Award, Options, Grants in Period, Weighted Average Exercise Price | Ìý | Ìý | Ìý | $ 58.49 | Ìý | $ 0.00 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 0.00 | Ìý | Ìý | $ 18.85 | Ìý | Ìý | $ 27.96 | $ 0.00 | Ìý | $ 0.00 | Ìý | $ 10.93 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period | Ìý | Ìý | Ìý | (181,000) | Ìý | 0 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 0 | Ìý | Ìý | (9,853,000) | Ìý | Ìý | 905,000 | Ìý | 0 | Ìý | 0 | 20,086,000 |
| Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price | Ìý | Ìý | Ìý | $ 30.91 | Ìý | $ 0.00 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 0.00 | Ìý | Ìý | $ 9.64 | Ìý | Ìý | $ 58.80 | $ 0.00 | Ìý | $ 0.00 | Ìý | $ 19.26 |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures in Period | Ìý | Ìý | Ìý | (19,000) | Ìý | 0 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 0 | Ìý | Ìý | (737,000) | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Share-based Compensation Arrangements by Share-based Payment Award, Options, Forfeitures in Period, Weighted Average Exercise Price | Ìý | Ìý | Ìý | $ 34.05 | Ìý | $ 0.00 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 0.00 | Ìý | Ìý | $ 14.44 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Options Adjustment from Recapitalization | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | 22,000 | Ìý | Ìý | 1,588,000 | Ìý | Ìý | Ìý | (18,000) | Ìý | Ìý | 413,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Weighted Average Exercise Price of Adjusted Options from Recapitalization | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | $ 46.69 | Ìý | Ìý | $ 30.69 | Ìý | Ìý | Ìý | $ 17.92 | Ìý | Ìý | $ 8.39 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Remaining Contractual Term | Ìý | Ìý | Ìý | Ìý | Ìý | 2 years 8 months 12 days | Ìý | Ìý | 6 years | Ìý | Ìý | Ìý | 2 years 8 months 12 days | Ìý | Ìý | 5 years 8 months 12 days | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Aggregate intrinsic value | Ìý | Ìý | Ìý | Ìý | Ìý | $ 58 | Ìý | Ìý | $ 13,326 | Ìý | Ìý | Ìý | $ 225 | Ìý | Ìý | $ 97,886 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Exercisable options | Ìý | Ìý | 449,000 | 449,000 | Ìý | 22,000 | Ìý | Ìý | 449,000 | Ìý | Ìý | Ìý | 432,000 | Ìý | Ìý | 12,929,000 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Exercisable WAEP | Ìý | Ìý | $ 52.91 | $ 52.91 | Ìý | $ 46.69 | Ìý | Ìý | $ 52.91 | Ìý | Ìý | Ìý | $ 17.92 | Ìý | Ìý | $ 15.56 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term | Ìý | Ìý | Ìý | Ìý | Ìý | 2 years 8 months 12 days | Ìý | Ìý | 4 years 7 months 6 days | Ìý | Ìý | Ìý | 2 years 8 months 1 day | Ìý | Ìý | 4 years 5 months 13 days | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |
| Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Intrinsic Value | Ìý | Ìý | Ìý | Ìý | Ìý | $ 58 | Ìý | Ìý | $ 6,710 | Ìý | Ìý | Ìý | $ 225 | Ìý | Ìý | $ 57,484 | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý | Ìý |