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Segment Information - Additional Information (Detail) - Segment | 9 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2017 | May 31, 2016
Segment Reporting Information [Line Items] |  |
Number of reportable segments | 3 |
Number of operating segments | 7 |
Maximum | Industrial Segment | Performance Coatings Group |  |
Segment Reporting Information [Line Items] |  |
Percentage of consolidated net sales, income before income taxes and identifiable assets |  | 1.00%

X
- Definition Percentage of consolidated net sales, income before income taxes and identifiable assets. + References No definition available. + Details
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Period Type: | duration

X
- Definition Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues. + References No definition available. + Details
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Balance Type: | na
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
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Period Type: | duration

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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Namespace Prefix: |
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Period Type: |

X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |

X
- Details
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Namespace Prefix: |
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Balance Type: |
Period Type: |