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Segment Reporting (Narrative) (Details) (USD $) In Millions, unless otherwise specified		9 Months Ended
	Apr. 30, 2012	Apr. 30, 2011 Industrial Products [Member]
Segment Reporting Information [Line Items]
Number of reportable segments	2
Restructuring expenses		$ 0.7

- Definition

Discloses the amount charged against the accrued restructuring reserves, or earnings if not previously accrued, during the period for the specified type of restructuring cost.

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