Segment Information - Reconciliation of Earnings from Operations to Earnings Before Income Tax and Earnings from Unconsolidated Affiliates (Detail) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
May 31, 2026	May 31, 2025	May 31, 2026	May 31, 2025
Segment Reporting Information [Line Items]
Earnings from operations	$ 31.9	$ 92.6	$ 118.1	$ 288.0
Interest and foreign exchange	16.5	13.2	45.7	58.3
Earnings before income tax and earnings from unconsolidated affiliates	15.4	79.4	72.4	229.7
Operating Segments
Segment Reporting Information [Line Items]
Earnings from operations	59.6	129.3	208.4	388.2
Corporate
Segment Reporting Information [Line Items]
Earnings from operations	(27.7)	(36.7)	(90.3)	(100.2)
Manufacturing \| Operating Segments
Segment Reporting Information [Line Items]
Earnings from operations	30.4	98.5	99.7	300.9
Leasing & Fleet Management \| Operating Segments
Segment Reporting Information [Line Items]
Earnings from operations	$ 29.2	$ 30.8	$ 108.7	$ 87.3

Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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+ Details

- Definition

The net result for the period of deducting operating expenses from operating revenues.

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+ Details