Annual report pursuant to Section 13 and 15(d)

Basic and Diluted Earnings Per Share (Details)

 v2.3.0.11
Basic and Diluted Earnings Per Share (Details) (USD $)
In Millions, except Per Share data
3 Months Ended 12 Months Ended
May 31, 2011
Feb. 28, 2011
Nov. 30, 2010
Aug. 31, 2010
May 31, 2010
Feb. 28, 2010
Nov. 30, 2009
Aug. 31, 2009
May 31, 2011
May 31, 2010
May 31, 2009
Basic earnings per share:                      
Net income $ 118.9 $ 130.6 $ 133.9 $ 131.9 $ 115.5 $ 112.0 $ 125.9 $ 123.6 $ 515.3 $ 477.0 $ 533.5
Weighted-average common shares outstanding 362.0 361.8 361.7 361.6 361.5 361.4 361.4 361.2 361.8 361.4 360.8
Basic earnings per share $ 0.33 $ 0.36 $ 0.37 $ 0.36 $ 0.32 $ 0.31 $ 0.35 $ 0.34 $ 1.42 $ 1.32 $ 1.48
Diluted earnings per share:                      
Net income $ 118.9 $ 130.6 $ 133.9 $ 131.9 $ 115.5 $ 112.0 $ 125.9 $ 123.6 $ 515.3 $ 477.0 $ 533.5
Weighted-average common shares outstanding 362.0 361.8 361.7 361.6 361.5 361.4 361.4 361.2 361.8 361.4 360.8
Dilutive effect of common share equivalents at average market price                 0.6 0.3 0.2
Weighted-average common shares outstanding, assuming dilution 363.0 362.6 362.1 362.0 362.0 361.9 361.7 361.4 362.4 361.7 361.0
Diluted earnings per share $ 0.33 $ 0.36 $ 0.37 $ 0.36 $ 0.32 $ 0.31 $ 0.35 $ 0.34 $ 1.42 $ 1.32 $ 1.48
Weighted-average anti-dilutive common share equivalents                 11.5 13.0 13.5