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Goodwill and Other Intangibles (Details) - Schedule of activity in goodwill - USD ($) $ in Millions	9 Months Ended		12 Months Ended
	Feb. 29, 2016	Feb. 28, 2015	May. 31, 2015
Goodwill [Roll Forward]
Gross beginning balance	$ 155.9	$ 156.0	$ 156.0
Accumulated impairment	(39.6)	(34.2)	(34.2)
Beginning balance	116.3	121.8	121.8
Impairment charge	0.0	0.0	(5.4)
Foreign currency translation	(0.1)	(0.1)	(0.1)
Gross ending balance	155.8	155.9	155.9
Accumulated impairment	(39.6)	(34.2)	(39.6)
Ending balance	$ 116.2	$ 121.7	$ 116.3

X

- Definition

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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- Definition

Amount before accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
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Amount of accumulated impairment loss for an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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-Publisher FASB
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- Definition

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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- Definition

Amount of increase (decrease) from foreign currency translation adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

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