Business Combinations - Summary of Final Purchase Price Allocation Based upon Fair Value of Assets Acquired And Liabilities Assumed (Detail) - USD ($) $ in Millions	May 31, 2026	May 31, 2025	May 31, 2024
Business Combination Recognized Identifiable Assets Acquired Goodwill And Liabilities Assumed Net [Line Items]
Goodwill (note 6)	$ 1,047.2	$ 1,064.9	$ 2,135.6

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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+ Details