v2.4.0.8
Stock-Based Compensation (Details 3) (USD $)
In Millions, except Share data, unless otherwise specified
 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Long-term performance based plans
      
Stock option activity      
Total options outstanding, end of period (in shares) 629,300 632,100 658,700
Weighted-Average Exercise Price      
Total options outstanding, end of period (in dollars per share) $ 25.27 $ 25.28 $ 25.30
Stock options
      
Stock option activity      
Total options outstanding, beginning of period (in shares) 7,908,300 8,078,413 7,795,373
Granted (in shares) 1,190,000 771,000 1,955,000
Exercised (in shares) (2,494,893) (569,073) (1,082,280)
Forfeited and cancelled (in shares) (332,349) (372,040) (589,680)
Total options outstanding, end of period (in shares) 6,271,058 7,908,300 8,078,413
Exercisable at end of period (in shares) 2,712,891 3,746,166 2,854,272
Weighted-Average Exercise Price      
Total options outstanding, beginning of period (in dollars per share) $ 27.21 $ 26.30 $ 23.24
Granted (in dollars per share) $ 38.75 $ 30.81 $ 36.01
Exercised (in dollars per share) $ 24.65 $ 20.02 $ 23.59
Forfeited and cancelled (in dollars per share) $ 27.01 $ 25.71 $ 23.07
Total options outstanding, end of period (in dollars per share) $ 30.43 $ 27.21 $ 26.30
Exercisable at end of period, Weighted-Average Exercise Price (in dollars per share) $ 28.69 $ 25.98 $ 25.02
Share-based compensation additional disclosures      
Tax benefit from stock awards exercised $ 21.9 $ 3.1 $ 4.6
Aggregate intrinsic value      
Aggregate intrinsic value of stock options outstanding 120.9    
Aggregate intrinsic value of stock options exercisable $ 57.6    
Restricted stock units
      
Restricted stock unit activity      
Total restricted stock units outstanding, beginning of period (in shares) 151,683 144,226 107,249
Granted (in shares)   33,333 69,950
Vested (in shares) (22,876) (16,210) (11,225)
Forfeited and cancelled (in shares) (6,930) (9,666) (21,748)
Total restricted stock units outstanding, end of period (in shares) 121,877 151,683 144,226
Weighted - Average Grant Date Fair Value      
Total restricted stock units outstanding, beginning of period (in dollars per share) $ 30.18 $ 29.22 $ 27.33
Granted (in dollars per share)   $ 34.22 $ 32.00
Vested (in dollars per share) $ 33.08 $ 32.61 $ 31.84
Forfeited and cancelled (in dollars per share) $ 24.88 $ 25.84 $ 27.36
Total restricted stock units outstanding, end of period (in dollars per share) $ 29.93 $ 30.18 $ 29.22
Restricted Performance Units
      
Restricted stock unit activity      
Total restricted stock units outstanding, end of period (in shares) 57,680 64,610 74,276
Weighted - Average Grant Date Fair Value      
Total restricted stock units outstanding, end of period (in dollars per share) $ 26.94 $ 26.72 $ 26.61