Discontinued Operations (Details) - Schedule of assets and liabilities of the discontinued operations (USD $) In Millions, unless otherwise specified	May 31, 2013	May 31, 2012
Schedule of assets and liabilities of the discontinued operations [Abstract]
Accounts receivable, net	$ 0	$ 0.2
Other assets	0.4	7.5
Current assets of discontinued operations	0.4	7.7
Accrued expenses and other current liabilities	1.3	2.1
Current liabilities of discontinued operations	$ 1.3	$ 2.1