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Results of Reportable Segments (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Nov. 30, 2017 | Nov. 30, 2016 | Nov. 30, 2017 | Nov. 30, 2016
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | $ 1,315,416 | $ 1,190,770 | $ 2,660,810 | $ 2,442,833
Income Before Income Taxes | 109,181 | (106,857) | 264,465 | 41,618
Operating Segments | Industrial Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 702,905 | 633,429 | 1,432,673 | 1,309,269
Income Before Income Taxes | 67,696 | 50,291 | 156,598 | 139,557
Operating Segments | Consumer Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 415,431 | 373,774 | 842,575 | 773,661
Income Before Income Taxes | 45,085 | (140,575) | 117,453 | (70,487)
Operating Segments | Specialty Segment |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Net Sales | 197,080 | 183,567 | 385,562 | 359,903
Income Before Income Taxes | 34,439 | 31,160 | 67,606 | 61,664
Corporate/Other |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Income Before Income Taxes | $ (38,039) | $ (47,733) | $ (77,192) | $ (89,116)

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