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Results of Reportable Segments (Detail) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Aug. 31, 2016 | Aug. 31, 2015 | May 31, 2016
Segment Reporting Information [Line Items] |  |  |
Net Sales | $ 1,252,063 | $ 1,242,526 |
Income (Loss) Before Income Taxes | 148,475 | 142,201 |
Identifiable Assets | 4,726,899 |  | $ 4,764,969
Operating Segments | Industrial Segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Sales | 675,840 | 677,108 |
Income (Loss) Before Income Taxes | 89,266 | 84,468 |
Identifiable Assets | 2,221,108 |  | 2,206,062
Operating Segments | Specialty Segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Sales | 176,336 | 169,861 |
Income (Loss) Before Income Taxes | 30,504 | 26,489 |
Identifiable Assets | 743,820 |  | 754,757
Operating Segments | Consumer Segment |  |  |
Segment Reporting Information [Line Items] |  |  |
Net Sales | 399,887 | 395,557 |
Income (Loss) Before Income Taxes | 70,088 | 66,123 |
Identifiable Assets | 1,754,113 |  | 1,734,600
Corporate/Other |  |  |
Segment Reporting Information [Line Items] |  |  |
Income (Loss) Before Income Taxes | (41,383) | $ (34,879) |
Identifiable Assets | $ 7,858 |  | $ 69,550

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