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Segment Information - Summary of Geographic Information (Detail) - USD ($) $ in Millions		12 Months Ended
		Aug. 31, 2024	Aug. 31, 2023	Aug. 31, 2022
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue		$ 3,544.7	$ 3,944.0	$ 2,977.7
Assets		4,254.5	3,978.4	3,851.5
U.S.
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	[1]	2,787.5	3,235.3	2,452.1
Assets		2,775.4	2,593.4	2,689.6
Foreign
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenue	[1]	757.2	708.7	525.6
Mexico
Segment Reporting, Revenue Reconciling Item [Line Items]
Assets		1,145.3	1,084.3	948.4
Europe
Segment Reporting, Revenue Reconciling Item [Line Items]
Assets		$ 333.8	$ 300.7	$ 213.5
[1] Revenue is presented on the basis of geographic location of customers.

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