v2.4.0.6
Stock-Based Awards And Other Equity Instruments (Summary Of Stock Option Activity) (Details) (USD $)
In Thousands, except Per Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2011
years
Dec. 31, 2010
Dec. 31, 2009
Stock-Based Awards And Other Equity Instruments [Abstract]      
Options, Balance as of January 1 9,103 [1] 9,001 [1] 4,917 [1]
Options, Granted 3,725 [1] 2,908 [1] 5,162 [1]
Options, Exercised (1,176) [1] (1,834) [1] (439) [1]
Options, Cancelled (1,030) [1] (972) [1] (639) [1]
Options, Balance as of December 31 14,798 [1],[2] 9,103 [1] 9,001 [1]
Options, Adjustments due to the spin-off 4,288 [1],[3]    
Options, Exercised - post spin-off (112) [1]    
Options, Exercisable as of December 31, 2011 3,440 [1]    
Options, Vested and expected to vest after December 31, 2011 12,900 [1]    
Weighted Average Exercise Price, January 1 $ 35.90 [1] $ 30.34 [1] $ 46.58 [1]
Weighted Average Exercise Price, Granted $ 43.19 [1] $ 52.42 [1] $ 15.66 [1]
Weighted Average Exercise Price, Exercised $ 24.16 [1] $ 24.96 [1] $ 35.76 [1]
Weighted Average Exercise Price, Cancelled $ 32.48 [1] $ 30.96 [1] $ 32.92 [1]
Weighted Average Exercise Price, December 31 $ 17.96 [1],[2] $ 35.90 [1] $ 30.34 [1]
Weighted Average Exercise Price, Exercised - post spin-off $ 14.13 [1]    
Weighted Average Exercise Price, Exercisable as of December 31, 2011 $ 22.82 [1]    
Weighted Average Exercise Price, Vested and expected to vest after December 31, 2011 $ 18.18 [1]    
Remaining Contractual Life (In years), Balance as of December 31, 2011 5.0 [2]    
Remaining Contractual Life (In years), Exercisable as of December 31, 2011 3.7    
Remaining Contractual Life (In years), Vested and expected to vest after December 31, 2011 4.9    
Aggregate intrinsic value, Balance as of December 31, 2011 $ 168,743 [2]    
Aggregate intrinsic value, Exercisable as of December 31, 2011 26,468    
Aggregate intrinsic value, Vested and expected to vest after December 31, 2011 $ 144,962    
[1] Reflects the one-for-two reverse stock split on December 20, 2011.
[2] Outstanding options as of December 31, 2011 represent options outstanding after giving effect to the one-for-two reverse stock split and spin-off adjustments made in order to maintain the intrinsic value of those awards immediately prior to and immediately following the transaction.
[3] Reflects the equitable adjustment to the exercise prices and number of outstanding stock options necessary to maintain the intrinsic value of those awards immediately prior to and following the spin-off.