Annual report pursuant to Section 13 and 15(d)

Selected Quarterly Financial Information (Unaudited) (Details)

v2.4.0.8
Selected Quarterly Financial Information (Unaudited) (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified
 3 Months Ended 12 Months Ended
Feb. 28, 2014
Nov. 30, 2013
Aug. 31, 2013
May 31, 2013
Feb. 28, 2013
Nov. 30, 2012
Aug. 31, 2012
May 31, 2012
Feb. 28, 2014
Feb. 28, 2013
Feb. 29, 2012
Summary of selected quarterly financial information                      
Net sales $ 1,291.2 $ 1,443.3 $ 1,459.8 $ 673.4 $ 695.9 $ 766.9 $ 698.5 $ 634.8 $ 4,867.7 $ 2,796.1 $ 2,654.3
Gross profit 548.9 609.7 577.0 256.1 261.8 310.8 285.1 250.6 1,991.7 1,108.3 1,062.1
Net income $ 157.2 $ 211.0 $ 1,522.0 $ 52.9 $ 81.7 $ 109.5 $ 124.6 $ 72.0 $ 1,943.1 $ 387.8 $ 445.0
Class A Common Stock [Member]
                      
Earnings per common share:                      
Earnings per common share, basic (in dollars per share) $ 0.84 $ 1.13 $ 8.18 $ 0.29 $ 0.45 $ 0.61 $ 0.71 $ 0.39 $ 10.45 $ 2.15 $ 2.20
Earnings per common share, diluted (in dollars per share) $ 0.79 $ 1.07 $ 7.74 $ 0.27 $ 0.43 $ 0.58 $ 0.67 $ 0.38 $ 9.83 $ 2.04 $ 2.13
Class B Convertible Common Stock [Member]
                      
Earnings per common share:                      
Earnings per common share, basic (in dollars per share) $ 0.76 $ 1.03 $ 7.43 $ 0.26 $ 0.41 $ 0.55 $ 0.64 $ 0.36 $ 9.50 $ 1.96 $ 2.00
Earnings per common share, diluted (in dollars per share) $ 0.73 $ 0.98 $ 7.11 $ 0.25 $ 0.39 $ 0.53 $ 0.62 $ 0.35 $ 9.04 $ 1.87 $ 1.96