Annual report pursuant to Section 13 and 15(d)

Stock-Based Awards (Summary Of Information About Stock Options And SARs Outstanding And Exercisable) (Details)

v2.4.0.6
Stock-Based Awards (Summary Of Information About Stock Options And SARs Outstanding And Exercisable) (Details) (USD $)
12 Months Ended
Dec. 31, 2011
years
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Number Outstanding at December 31, 2011 4,009,427
Number Exercisable at December 31, 2011 2,614,591
$0.00 to $9.99 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Limit $ 0.00
Range of Exercise Prices, Upper Limit $ 9.99
Number Outstanding at December 31, 2011 660,842
Outstanding, Weighted Average Exercise Price $ 5.23
Outstanding, Weighted Average Remaining Contractual Term in Years 6.9
Number Exercisable at December 31, 2011 493,397
Exercisable, Weighted Average Exercise Price $ 5.56
$10.00 to $19.99 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Limit $ 10.00
Range of Exercise Prices, Upper Limit $ 19.99
Number Outstanding at December 31, 2011 1,115,810
Outstanding, Weighted Average Exercise Price $ 16.16
Outstanding, Weighted Average Remaining Contractual Term in Years 6.3
Number Exercisable at December 31, 2011 627,229
Exercisable, Weighted Average Exercise Price $ 15.81
$20.00 to $29.99 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Limit $ 20.00
Range of Exercise Prices, Upper Limit $ 29.99
Number Outstanding at December 31, 2011 1,232,058
Outstanding, Weighted Average Exercise Price $ 25.12
Outstanding, Weighted Average Remaining Contractual Term in Years 6.1
Number Exercisable at December 31, 2011 672,984
Exercisable, Weighted Average Exercise Price $ 24.40
$30.00 to $34.99 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Limit $ 30.00
Range of Exercise Prices, Upper Limit $ 34.99
Number Outstanding at December 31, 2011 424,298
Outstanding, Weighted Average Exercise Price $ 33.01
Outstanding, Weighted Average Remaining Contractual Term in Years 4.5
Number Exercisable at December 31, 2011 388,667
Exercisable, Weighted Average Exercise Price $ 33.25
$35.00 to $44.99 [Member]
 
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of Exercise Prices, Lower Limit $ 35.00
Range of Exercise Prices, Upper Limit $ 44.99
Number Outstanding at December 31, 2011 576,419
Outstanding, Weighted Average Exercise Price $ 42.16
Outstanding, Weighted Average Remaining Contractual Term in Years 6.6
Number Exercisable at December 31, 2011 432,314
Exercisable, Weighted Average Exercise Price $ 42.16