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Discontinued Operations (Details) - Schedule of operating results of the discontinued operations (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Feb. 28, 2014
Feb. 28, 2013
Feb. 28, 2014
Feb. 28, 2013
Schedule of operating results of the discontinued operations [Abstract]        
Revenues $ 0 $ 1.9 $ 0.1 $ 4.8
Earnings (loss) before income taxes 0 (0.2) 0.3 (2.2)
Income tax benefit (provision) 0 0 (0.1) 0.8
Earnings (loss) from discontinued operations, net of tax $ 0 $ (0.2) $ 0.2 $ (1.4)