Results of Reportable Segments (Detail) - USD ($) $ in Thousands	3 Months Ended
Aug. 31, 2017	Aug. 31, 2016
Segment Reporting Information [Line Items]
Net Sales	$ 1,345,394	$ 1,252,063
Income Before Income Taxes	155,284	148,475
Operating Segments \| Industrial Segment
Segment Reporting Information [Line Items]
Net Sales	729,768	675,840
Income Before Income Taxes	88,902	89,266
Operating Segments \| Consumer Segment
Segment Reporting Information [Line Items]
Net Sales	427,144	399,887
Income Before Income Taxes	72,368	70,088
Operating Segments \| Specialty Segment
Segment Reporting Information [Line Items]
Net Sales	188,482	176,336
Income Before Income Taxes	33,167	30,504
Corporate/Other
Segment Reporting Information [Line Items]
Income Before Income Taxes	$ (39,153)	$ (41,383)

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 235
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.4-08.(h)(1)(i))
-URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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