Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments (Details Textual)

Derivative Instruments (Details Textual) - May. 31, 2015 - USD ($)
$ in Millions
Derivative Instruments and Hedging Activities Disclosure [Abstract]  
Fair value of derivative instruments in a net liability position due to counterparties $ 75.9
Amount of net losses, net of income tax effect, to be reclassified from AOCI to earnings within the next 12 months $ (19.2)