Annual report pursuant to Section 13 and 15(d)

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

v3.6.0.2
Stock-Based Awards (Summary Of Information About Stock Options And SARs Outstanding And Exercisable) (Details)
12 Months Ended
Dec. 31, 2016
$ / shares
shares
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Number Outstanding at December 31 | shares 2,580,217
Number Exercisable at December 31 | shares 1,308,868
$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 | shares 95,202
Weighted Average Exercise Price $ 4.91
Weighted Average Remaining Contractual Term in Years 2 years
Number Exercisable at December 31 | shares 95,202
Weighted Average Exercise Price $ 4.91
$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 | shares 48,873
Weighted Average Exercise Price $ 16.11
Weighted Average Remaining Contractual Term in Years 2 years 4 months
Number Exercisable at December 31 | shares 48,873
Weighted Average Exercise Price $ 16.11
$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 | shares 57,541
Weighted Average Exercise Price $ 25.86
Weighted Average Remaining Contractual Term in Years 4 years 1 month
Number Exercisable at December 31 | shares 57,541
Weighted Average Exercise Price $ 25.86
$30.00 to $39.99 [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 $ 39.99
Number Outstanding at December 31 | shares 450,822
Weighted Average Exercise Price $ 37.52
Weighted Average Remaining Contractual Term in Years 2 years 2 months
Number Exercisable at December 31 | shares 450,822
Weighted Average Exercise Price $ 37.52
$40.00 to $49.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of exercise prices, lower limit 40.00
Range of exercise prices, upper limit $ 49.99
Number Outstanding at December 31 | shares 1,216,719
Weighted Average Exercise Price $ 45.72
Weighted Average Remaining Contractual Term in Years 8 years 6 months
Number Exercisable at December 31 | shares 236,836
Weighted Average Exercise Price $ 47.73
$50.00 to $59.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of exercise prices, lower limit 50.00
Range of exercise prices, upper limit $ 59.99
Number Outstanding at December 31 | shares 283,116
Weighted Average Exercise Price $ 51.56
Weighted Average Remaining Contractual Term in Years 6 years 2 months
Number Exercisable at December 31 | shares 275,666
Weighted Average Exercise Price $ 51.57
$60.00 to $69.99 [Member]  
Share-based Compensation, Shares Authorized under Stock Option Plans, Exercise Price Range [Line Items]  
Range of exercise prices, lower limit 60.00
Range of exercise prices, upper limit $ 69.99
Number Outstanding at December 31 | shares 427,944
Weighted Average Exercise Price $ 65.24
Weighted Average Remaining Contractual Term in Years 8 years 1 month
Number Exercisable at December 31 | shares 143,928
Weighted Average Exercise Price $ 65.24