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, 2014
Aug. 31, 2013
Aug. 31, 2014
Aug. 31, 2013
Basic and diluted earnings per common share        
Income available to common stockholders $ 195.8 $ 1,522.0 $ 402.5 $ 1,574.9
Class A Common Stock [Member]
        
Weighted average common shares outstanding - basic:        
Weighted average common shares outstanding - basic 169,158,000 164,825,000 168,663,000 163,277,000
Weighted average common shares outstanding - diluted        
Weighted average common shares outstanding - basic 169,158,000 164,825,000 168,663,000 163,277,000
Stock-based awards, primarily stock options 8,241,000 8,470,000 8,508,000 9,294,000
Weighted average common shares outstanding - diluted 200,800,000 196,767,000 200,579,000 196,056,000
Earnings per common share - basic:        
Earnings per common share - basic $ 1.03 $ 8.18 $ 2.12 $ 8.53
Earnings per common share - diluted:        
Earnings per common share - diluted $ 0.98 $ 7.74 $ 2.01 $ 8.03
Earnings Per Common Share (Textual)        
Antidilutive shares not included in computation of earnings per common share 900,000 1,400,000 1,000,000 1,400,000
Class B Convertible Common Stock [Member]
        
Weighted average common shares outstanding - basic:        
Weighted average common shares outstanding - basic 23,401,000 23,472,000 23,408,000 23,485,000
Weighted average common shares outstanding - diluted        
Weighted average common shares outstanding - basic 23,401,000 23,472,000 23,408,000 23,485,000
Weighted average common shares outstanding - diluted 23,401,000 23,472,000 23,408,000 23,485,000
Earnings per common share - basic:        
Earnings per common share - basic $ 0.93 $ 7.43 $ 1.93 $ 7.75
Earnings per common share - diluted:        
Earnings per common share - diluted $ 0.90 $ 7.11 $ 1.84 $ 7.38