Segment Operations - Additional Information (Detail)	9 Months Ended
Feb. 28, 2025 Segment
Segment Reporting Information [Line Items]
Number of operating segments	2
Segment Reporting, CODM, Individual Title and Position or Group Name [Extensible Enumeration]	srt:ChiefExecutiveOfficerMember
Segment Reporting, CODM, Profit (Loss) Measure, How Used, Description	Our CODM evaluates segment performance on the basis of adjusted EBITDA from continuing operations, as described in the “Use of Non-GAAP Financial Measures and Definitions” section. Factors used to identify operating segments include the nature of the products provided by each business, the management reporting structure, similarity of economic characteristics and certain quantitative measures, as prescribed by GAAP.
Sustainable Energy Solutions [Member]
Segment Reporting Information [Line Items]
Percent of ownership interest held in unconsolidated affiliates	49.00%

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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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.

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Indicates title and position of individual or name of group identified as chief operating decision maker (CODM) for segment reporting.

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Description of how chief operating decision maker (CODM) uses reported segment profit (loss) measure to assess performance and allocate resource.

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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.

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