Annual report pursuant to Section 13 and 15(d)

Income Taxes (Details Textual)

v3.7.0.1
Income Taxes (Details Textual) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Aug. 31, 2015
Feb. 29, 2016
Feb. 28, 2017
Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items]      
Undistributed earnings of foreign subsidiaries expected to be indefinitely reinvested     $ 420.0
Amount of unrecognized deferred taxes on undistributed earnings of foreign subsidiaries expected to be indefinitely reinvested     110.0
Operating loss carryforwards     321.2
Operating loss carryforwards subject to expiration     301.6
Operating loss carryforwards not subject to expiration     19.6
Federal capital losses subject to expiration     262.9
Non-current unrecognized tax benefit liabilities, including interest and penalties   $ 32.3 42.7
Unrecognized tax benefits that would impact effective tax rate if recognized   30.4 39.5
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     $ 20.0