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Results of Reportable Segments (Detail) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Nov. 30, 2015 | Nov. 30, 2014 | Nov. 30, 2015 | Nov. 30, 2014 | May. 31, 2015
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net Sales |  | $ 1,155,984 | $ 1,071,128 | $ 2,398,510 | $ 2,275,024 |
Income (Expense) Before Income Taxes | [1] | 120,261 | 105,750 | 262,462 | 253,828 |
Interest Income (Expense), Net | [2] | (21,378) | (14,346) | (39,770) | (29,958) |
EBIT | [3] | 141,639 | 120,096 | 302,232 | 283,786 |
Total Assets |  | 4,518,232 |  | 4,518,232 |  | $ 4,694,240
Operating Segments | Industrial Segment |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net Sales |  | 610,201 | 647,836 | 1,273,530 | 1,342,120 |
Income (Expense) Before Income Taxes | [1] | 62,962 | 62,810 | 145,713 | 148,233 |
Interest Income (Expense), Net | [2] | (1,535) | (1,976) | (3,034) | (4,647) |
EBIT | [3] | 64,497 | 64,786 | 148,747 | 152,880 |
Total Assets |  | 1,944,190 |  | 1,944,190 |  | 2,105,364
Operating Segments | Specialty Segment |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net Sales |  | 186,729 | 70,511 | 370,369 | 150,113 |
Income (Expense) Before Income Taxes | [1] | 29,324 | 14,299 | 57,530 | 31,340 |
Interest Income (Expense), Net | [2] | 199 | 78 | 395 | 116 |
EBIT | [3] | 29,125 | 14,221 | 57,135 | 31,224 |
Total Assets |  | 791,719 |  | 791,719 |  | 798,893
Operating Segments | Consumer Segment |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Net Sales |  | 359,054 | 352,781 | 754,611 | 782,791 |
Income (Expense) Before Income Taxes | [1] | 65,429 | 61,562 | 131,552 | 138,231 |
Interest Income (Expense), Net | [2] | 42 | (4) | 100 | (12) |
EBIT | [3] | 65,387 | 61,566 | 131,452 | 138,243 |
Total Assets |  | 1,552,852 |  | 1,552,852 |  | 1,626,097
Corporate/Other |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |
Income (Expense) Before Income Taxes | [1] | (37,454) | (32,921) | (72,333) | (63,976) |
Interest Income (Expense), Net | [2] | (20,084) | (12,444) | (37,231) | (25,415) |
EBIT | [3] | (17,370) | $ (20,477) | (35,102) | $ (38,561) |
Total Assets |  | $ 229,471 |  | $ 229,471 |  | $ 163,886
[1] | The presentation includes a reconciliation of Income (Loss) Before Income Taxes, a measure defined by Generally Accepted Accounting Principles (GAAP) in the United States, to EBIT.
[2] | Interest (expense), net includes the combination of interest (expense) and investment income/(expense), net.
[3] | EBIT is defined as earnings (loss) before interest and taxes. We evaluate the profit performance of our segments based on income before income taxes, but also look to EBIT as a performance evaluation measure because interest expense is essentially related to acquisitions, as opposed to segment operations. We believe EBIT is useful to investors for this purpose as well, using EBIT as a metric in their investment decisions. EBIT should not be considered an alternative to, or more meaningful than, income before taxes as determined in accordance with GAAP, since EBIT omits the impact of interest and taxes in determining operating performance, which represent items necessary to our continued operations, given our level of indebtedness and ongoing tax obligations. Nonetheless, EBIT is a key measure expected by and useful to our fixed income investors, rating agencies and the banking community all of whom believe, and we concur, that this measure is critical to the capital markets' analysis of our segments' core operating performance. We also evaluate EBIT because it is clear that movements in EBIT impact our impact our ability to attract financing. Our underwriters and bankers consistently require inclusion of this measure in offering memoranda in conjunction with any debt underwriting or bank financing. EBIT may not be indicative of our historical operating results, nor is it meant to be predictive of potential future results.

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