Commitments and Contingencies (Details 2) $ in Millions	May. 31, 2015 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Future minimum payment obligations under purchase orders and contractual arrangements, Due in Fiscal 2016	$ 71.2
Future minimum payment obligations under purchase orders and contractual arrangements, Due in Fiscal 2017	26.8
Future minimum payment obligations under purchase orders and contractual arrangements, Due in Fiscal 2018	4.4
Future minimum payment obligations under purchase orders and contractual arrangements, Due in Fiscal 2019	1.9
Future minimum payment obligations under purchase orders and contractual arrangements, Due in Fiscal 2020	0.3
Future minimum payment obligations under purchase orders and contractual arrangements, Due Thereafter	$ 0.2