Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Common Share (Details)

v2.4.0.8
Earnings Per Common Share (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 3 Months Ended 6 Months Ended
Aug. 31, 2013
Aug. 31, 2012
Aug. 31, 2013
Aug. 31, 2012
Basic and diluted earnings per common share        
Income available to common stockholders $ 1,522.0 $ 124.6 $ 1,574.9 $ 196.6
Class A Common Stock [Member]
        
Weighted average common shares outstanding - basic:        
Weighted average common shares outstanding - basic 164,825,000 154,794,000 163,277,000 158,527,000
Weighted average common shares outstanding - diluted        
Weighted average common shares outstanding - basic 164,825,000 154,794,000 163,277,000 158,527,000
Stock-based awards, primarily stock options 8,470,000 6,310,000 9,294,000 5,386,000
Weighted average common shares outstanding - diluted 196,767,000 184,640,000 196,056,000 187,458,000
Earnings per common share - basic:        
Earnings per common share - basic $ 8.18 $ 0.71 $ 8.53 $ 1.09
Earnings per common share - diluted:        
Earnings per common share - diluted $ 7.74 $ 0.67 $ 8.03 $ 1.05
Earnings Per Common Share (Textual)        
Antidilutive shares not included in computation of earnings per common share 1,400,000 3,200,000 1,400,000 3,600,000
Class B Convertible Common Stock [Member]
        
Weighted average common shares outstanding - basic:        
Weighted average common shares outstanding - basic 23,472,000 23,536,000 23,485,000 23,545,000
Weighted average common shares outstanding - diluted        
Weighted average common shares outstanding - basic 23,472,000 23,536,000 23,485,000 23,545,000
Weighted average common shares outstanding - diluted 23,472,000 23,536,000 23,485,000 23,545,000
Earnings per common share - basic:        
Earnings per common share - basic $ 7.43 $ 0.64 $ 7.75 $ 0.99
Earnings per common share - diluted:        
Earnings per common share - diluted $ 7.11 $ 0.62 $ 7.38 $ 0.96