Quarterly report pursuant to Section 13 or 15(d)

Goodwill (Details Textual)

 v2.3.0.11
Goodwill (Details Textual) (USD $)
In Millions, unless otherwise specified
 1 Months Ended 3 Months Ended 6 Months Ended 7 Months Ended 12 Months Ended
Jan. 31, 2011
Aug. 31, 2011
Feb. 28, 2011
Aug. 31, 2011
Aug. 31, 2011
Feb. 28, 2011
Goodwill (Textuals)            
Percentage of business sold 80.10%          
Transaction value of business sold including post-closing adjustments $ 266.2          
Cash proceeds from the sale of business         192.5  
Cash divested         15.8  
Direct cost paid including post-closing adjustments         11.2  
Post-closing adjustments paid         19.9  
Percentage of interest retained in previous business         less than 20%  
Net gain (loss)   (0.6) 55.2 0.8 56.0  
Additional gain (loss) recognized   (0.1) 28.5 (0.7)    
Net gain on derivative instrument related to divestiture     20.8      
Net gains (losses) on CWAE Divestiture and related activities   $ (0.7)   $ 0.1 $ 83.8 $ 83.7