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Treasury Stock - Schedule of repurchase of common stock (Details) - USD ($) $ in Millions	3 Months Ended	5 Months Ended
	Aug. 31, 2026	Aug. 31, 2026	Mar. 18, 2026
Equity, Class of Treasury Stock [Line Items]
Authorized amount of stock to be repurchased	$ 297.0	$ 297.0
Less repurchases made under these authorizations	(25.9)
Remaining Board authorization at August 31, 2026	157.4	157.4
Board Authorized 2024 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Authorized amount of stock to be repurchased			$ 297.0
Under all Board Authorizations
Equity, Class of Treasury Stock [Line Items]
Less repurchases made under these authorizations		$ (139.6)
Board Authorized March 2026 Share Repurchase Program
Equity, Class of Treasury Stock [Line Items]
Less repurchases made under these authorizations	$ (25.8)