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Intangibles and Other Assets, Net - Identifiable Intangibles and Other Assets, Net (Detail) - USD ($) $ in Millions | Nov. 30, 2024 | Aug. 31, 2024
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Intangibles and Other Assets by Major Class [Line Items] |  |
Finite-Lived Intangible Assets, Net, Total | $ 29.8 | $ 31.5
Intangible assets not subject to amortization | 2.3 | 2.3
Prepaid and other assets | 41.8 | 51.7
Operating lease ROU assets | $ 61.5 | $ 65.1
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Total Intangibles and other assets, net | Total Intangibles and other assets, net
Nonqualified savings plan investments | $ 64.4 | $ 54.5
Debt issuance costs, net | 5.1 | 4.8
Assets held for sale | 0.3 | 0.3
Deferred tax assets | 36.9 | 34.2
Total Intangibles and other assets, net | 242.1 | 244.4
Customer Relationships |  |
Intangibles and Other Assets by Major Class [Line Items] |  |
Finite lived intangible assets gross | 87.5 | 87.5
Accumulated amortization | (72.8) | (72.1)
Other Intangible Assets |  |
Intangibles and Other Assets by Major Class [Line Items] |  |
Finite lived intangible assets gross | 41.8 | 43.3
Accumulated amortization | $ (26.7) | $ (27.2)

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