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Share-Based Compensation Plans (Details 2) (USD $)
 12 Months Ended
Dec. 31, 2013
Stock Option Plans  
Range of exercise price, lower limit (in dollars per share) $ 15
Range of exercise price, upper limit (in dollars per share) $ 67
Options Outstanding (in shares) 1,937,241
Options Outstanding, Weighted Average Remaining Contractual Life (In Years) 3 years
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 49.35
Options Exercisable (in shares) 1,253,516
Weighted Average Exercise Price of Options Exercisable (in dollars per share) $ 48.11
Range of Exercise Price $15 - $19
  
Stock Option Plans  
Range of exercise price, lower limit (in dollars per share) $ 15
Range of exercise price, upper limit (in dollars per share) $ 19
Options Outstanding (in shares) 18,000
Options Outstanding, Weighted Average Remaining Contractual Life (In Years) 1 year 4 months 24 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 18.31
Options Exercisable (in shares) 18,000
Weighted Average Exercise Price of Options Exercisable (in dollars per share) $ 18.31
Range of Exercise Price $24 - $28
  
Stock Option Plans  
Range of exercise price, lower limit (in dollars per share) $ 24
Range of exercise price, upper limit (in dollars per share) $ 28
Options Outstanding (in shares) 11,231
Options Outstanding, Weighted Average Remaining Contractual Life (In Years) 1 year 6 months
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 25.18
Options Exercisable (in shares) 11,231
Weighted Average Exercise Price of Options Exercisable (in dollars per share) $ 25.18
Range of Exercise Price $33 - $38
  
Stock Option Plans  
Range of exercise price, lower limit (in dollars per share) $ 33
Range of exercise price, upper limit (in dollars per share) $ 38
Options Outstanding (in shares) 207,425
Options Outstanding, Weighted Average Remaining Contractual Life (In Years) 2 years 8 months 12 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 34.28
Options Exercisable (in shares) 207,425
Weighted Average Exercise Price of Options Exercisable (in dollars per share) $ 34.28
Range of Exercise Price $42 - $45
  
Stock Option Plans  
Range of exercise price, lower limit (in dollars per share) $ 42
Range of exercise price, upper limit (in dollars per share) $ 45
Options Outstanding (in shares) 609,460
Options Outstanding, Weighted Average Remaining Contractual Life (In Years) 3 years 2 months 12 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 43.07
Options Exercisable (in shares) 391,310
Weighted Average Exercise Price of Options Exercisable (in dollars per share) $ 43.21
Range of Exercise Price $55 - $57
  
Stock Option Plans  
Range of exercise price, lower limit (in dollars per share) $ 55
Range of exercise price, upper limit (in dollars per share) $ 57
Options Outstanding (in shares) 1,037,125
Options Outstanding, Weighted Average Remaining Contractual Life (In Years) 3 years 1 month 6 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 56.08
Options Exercisable (in shares) 571,550
Weighted Average Exercise Price of Options Exercisable (in dollars per share) $ 56.37
Range of Exercise Price $61 - $67
  
Stock Option Plans  
Range of exercise price, lower limit (in dollars per share) $ 61
Range of exercise price, upper limit (in dollars per share) $ 67
Options Outstanding (in shares) 54,000
Options Outstanding, Weighted Average Remaining Contractual Life (In Years) 3 years 10 months 24 days
Options Outstanding, Weighted Average Exercise Price (in dollars per share) $ 64.08
Options Exercisable (in shares) 54,000
Weighted Average Exercise Price of Options Exercisable (in dollars per share) $ 64.08