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Fair Value Measurements - Narrative (Details) - USD ($) $ in Millions	Feb. 28, 2025	Aug. 31, 2024
2.150% Senior Unsecured Notes Due December 2030 | Estimate of Fair Value Measurement | Unsecured Debt
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying and estimated fair values of financial instruments	$ 432.7	$ 429.7
Revolving Credit Facility | Line of Credit | Revolving Credit Facility
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Carrying and estimated fair values of financial instruments	$ 600.0	$ 0.0

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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