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Significant Accounting Policies - Other Long-Term Assets (Details) $ in Millions	Aug. 31, 2025 USD ($) employee	Aug. 31, 2024 USD ($)
Other Long-Term Assets [Abstract]
Deferred costs and other assets	$ 30.4	$ 12.1
Investments in debt and equity securities	5.1	6.7
Pension plans in which plan assets exceed benefit obligation	9.7	13.3
Total other long-term assets	$ 45.2	$ 32.1
Number of former employees covered under life insurance policy | employee	48

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Aggregate carrying amount, as of the balance sheet date, of noncurrent assets which consist primarily of long-term investments, assets held for sale, deferred debt issuance costs, capitalized software costs, deferred sales and marketing costs and other miscellaneous long-term assets. Noncurrent assets are expected to be realized or consumed after one year (or the normal operating cycle, if longer).

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Amount of deferred cost, excluding capitalized cost related to contract with customer; classified as noncurrent.

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Amount of asset, recognized in statement of financial position, for overfunded defined benefit pension and other postretirement plans.

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