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
May 31, 2014
May 31, 2013
Basic and diluted earnings per common share    
Income available to common stockholders $ 206.7 $ 52.9
Class A Common Stock [Member]
    
Weighted average common shares outstanding - basic:    
Weighted average common shares outstanding - basic 168,158,000 161,729,000
Weighted average common shares outstanding - diluted    
Weighted average common shares outstanding - basic 168,158,000 161,729,000
Stock-based awards, primarily stock options 8,785,000 9,656,000
Weighted average common shares outstanding - diluted 200,358,000 194,884,000
Earnings per common share - basic:    
Earnings per common share - basic $ 1.09 $ 0.29
Earnings per common share - diluted:    
Earnings per common share - diluted $ 1.03 $ 0.27
Earnings Per Common Share (Textual)    
Antidilutive shares not included in computation of earnings per common share 900,000 1,000,000
Class B Convertible Common Stock [Member]
    
Weighted average common shares outstanding - basic:    
Weighted average common shares outstanding - basic 23,415,000 23,499,000
Weighted average common shares outstanding - diluted    
Weighted average common shares outstanding - basic 23,415,000 23,499,000
Weighted average common shares outstanding - diluted 23,415,000 23,499,000
Earnings per common share - basic:    
Earnings per common share - basic $ 0.99 $ 0.26
Earnings per common share - diluted:    
Earnings per common share - diluted $ 0.95 $ 0.25