v3.3.1.900
Share-based Compensation (Summary of Stock Award Information) (Schedule) (Details) - USD ($)
$ / shares in Units, $ in Millions
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Assumptions used to estimate fair value of options, SARs and PSARs granted:      
Cash received from exercise of options $ 54.8 $ 81.0 $ 25.6
Income tax benefit related to share-based compensation expense $ 54.6 $ 48.0 $ 16.1
Options, SARs and PSARs [Member] | Minimum [Member]      
Assumptions used to estimate fair value of options, SARs and PSARs granted:      
Risk-free interest rate 0.81% 0.36% 0.37%
Expected life 3 years 1 month 6 days 3 years 2 months 12 days 3 years 3 months 18 days
Expected volatility 25.10% 26.50% 28.00%
Options, SARs and PSARs [Member] | Maximum [Member]      
Assumptions used to estimate fair value of options, SARs and PSARs granted:      
Risk-free interest rate 1.77% 1.27% 1.68%
Expected life 5 years 1 month 6 days 7 years 1 month 6 days 7 years 10 months 24 days
Expected volatility 28.70% 35.80% 40.40%
Options [Member]      
Assumptions used to estimate fair value of options, SARs and PSARs granted:      
Weighted average grant-date fair value per share of awards granted, options (in dollars per share) $ 11.40 $ 11.09 $ 10.00
Total intrinsic value of awards exercised $ 126.6 $ 175.0 $ 43.9
SARs [Member]      
Assumptions used to estimate fair value of options, SARs and PSARs granted:      
Weighted average grant-date fair value per share of awards granted, other than options (in dollars per share) $ 8.93 $ 8.36 $ 7.18
Total intrinsic value of awards exercised $ 48.7 $ 73.2 $ 52.0
PSARs [Member]      
Assumptions used to estimate fair value of options, SARs and PSARs granted:      
Weighted average grant-date fair value per share of awards granted, other than options (in dollars per share) $ 8.15 $ 8.31 $ 0.00
Total intrinsic value of awards exercised $ 0.4 $ 0.0 $ 0.0
RSUs [Member]      
Assumptions used to estimate fair value of options, SARs and PSARs granted:      
Weighted average grant-date fair value per share of awards granted, other than options (in dollars per share) $ 40.68 $ 35.74 $ 24.57
PSUs and PGUs [Member]      
Assumptions used to estimate fair value of options, SARs and PSARs granted:      
Weighted average grant-date fair value per share of awards granted, other than options (in dollars per share) $ 42.47 $ 34.94 $ 25.09