Revenue Recognition - Summary of Contract Balances (Detail) - USD ($) $ in Millions		9 Months Ended
		May 31, 2024	Aug. 31, 2023
Contract With Customer Asset And Liability [Line Items]
Contract liabilities	[1]	$ 69.9	$ 43.3
Change in contract liabilities	[1]	26.6
Accounts Receivable
Contract With Customer Asset And Liability [Line Items]
Contract assets		4.3	0.1
Change in contract assets		4.2
Inventories
Contract With Customer Asset And Liability [Line Items]
Contract assets		10.9	$ 7.0
Change in contract assets		$ 3.9

[1] Contract liabilities balance includes deferred revenue within the scope of Revenue from Contracts with Customers (Topic 606).