Annual report pursuant to Section 13 and 15(d)

Commitments and Contingencies (Details 2)

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Commitments and Contingencies (Details 2) (USD $)
In Millions, unless otherwise specified
May 31, 2012
Minimum future payment obligations  
Payment obligations under purchase orders and contractual arrangements, Future minimum payments due, 2013 $ 47.8
Payment obligations under purchase orders and contractual arrangements, Future minimum payments due, 2014 24.8
Payment obligations under purchase orders and contractual arrangements, Future minimum payments due, 2015 12.3
Payment obligations under purchase orders and contractual arrangements, Future minimum payments due, 2016 2.4
Payment obligations under purchase orders and contractual arrangements, Future minimum payments due, 2017 0.6
Payment obligations under purchase orders and contractual arrangements, Future minimum payments due thereafter $ 0.5