Quarterly report pursuant to Section 13 or 15(d)

Earnings Per Common Share (Details)

v2.4.0.6
Earnings Per Common Share (Details) (USD $)
In Millions, except Share data, unless otherwise specified
 3 Months Ended 9 Months Ended
Nov. 30, 2011
Nov. 30, 2010
Nov. 30, 2011
Nov. 30, 2010
Basic and diluted earnings per common share        
NET INCOME $ 104.8 $ 139.3 $ 342.0 $ 279.7
Class A Common Stock [Member]
        
Weighted average common shares outstanding - basic:        
Weighted average common shares outstanding - basic 176,293,000 186,272,000 183,348,000 188,154,000
Weighted average common shares outstanding - diluted        
Weighted average common shares outstanding - basic 176,293,000 186,272,000 183,348,000 188,154,000
Stock-based awards, primarily stock options 3,055,000 3,158,000 3,724,000 2,655,000
Weighted average common shares outstanding - diluted 202,933,000 213,110,000 210,666,000 214,515,000
Earnings per common share - basic:        
Earnings per common share - basic $ 0.53 $ 0.67 $ 1.67 $ 1.33
Earnings per common share - diluted:        
Earnings per common share - diluted $ 0.52 $ 0.65 $ 1.62 $ 1.30
Earnings Per Common Share (Textual)        
Antidilutive shares not included in computation of earnings per common share 9,600,000 16,300,000 9,200,000 22,700,000
Class B Convertible Common Stock [Member]
        
Weighted average common shares outstanding - basic:        
Weighted average common shares outstanding - basic 23,585,000 23,680,000 23,594,000 23,706,000
Weighted average common shares outstanding - diluted        
Weighted average common shares outstanding - basic 23,585,000 23,680,000 23,594,000 23,706,000
Weighted average common shares outstanding - diluted 23,585,000 23,680,000 23,594,000 23,706,000
Earnings per common share - basic:        
Earnings per common share - basic $ 0.48 $ 0.61 $ 1.52 $ 1.21
Earnings per common share - diluted:        
Earnings per common share - diluted $ 0.47 $ 0.60 $ 1.49 $ 1.20