Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Textual)

v3.4.0.3
Income Taxes (Details Textual) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Aug. 31, 2015
Feb. 29, 2016
Feb. 28, 2015
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]      
Operating loss carryforwards   $ 436.7  
Operating loss carryforwards subject to expiration   404.3  
Operating loss carryforwards not subject to expiration   32.4  
Non-current unrecognized tax benefit liabilities, including interest and penalties   32.3 $ 79.7
Unrecognized tax benefits that would impact effective tax rate if recognized   30.4 $ 85.5
Tax benefits related to resolution of certain tax positions and expiration of statutes of limitations $ (31.9) (51.0)  
Minimum [Member]      
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]      
Estimate of change in unrecognized tax benefit liability reasonably possible as a result of examination or expiration of statutes of limitation   1.0  
Maximum [Member]      
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]      
Estimate of change in unrecognized tax benefit liability reasonably possible as a result of examination or expiration of statutes of limitation   $ 6.0