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Goodwill and Other Intangibles (Details) - Schedule of estimated amortization expense for intangibles
$ in Millions
May. 31, 2015
USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]  
2015 $ 1.9
2016 1.9
2017 0.2
2018 0.2
2019 $ 0.1