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Nature of Operations - Additional Information (Detail)	12 Months Ended
	Aug. 31, 2025 Vehicle Segment
Segment Reporting Information [Line Items]
Number of reportable segments	2
Leasing & Fleet Management
Segment Reporting Information [Line Items]
Number of railcars owned | Vehicle	17,000
Manufacturing
Segment Reporting Information [Line Items]
Number of reportable segments	1

X

- Definition

Number of railcars owned.

+ References

No definition available.

+ Details

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Balance Type:	na
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- 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

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 47
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-Publisher FASB
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-Topic 280
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 18
-Publisher FASB
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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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- Details

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