Derivative Financial Instruments and Hedging Activities - Schedule of Derivatives Designated as Cash Flow Hedging Instruments (Detail) - USD ($) $ in Millions	3 Months Ended
Aug. 31, 2025	Aug. 31, 2024
Derivative [Line Items]
Gain (Loss) Recognized in OCI	$ 0.4	$ (2.5)
Gain (Loss) Reclassified from AOCI into Net Earnings	0.4	(2.6)
Commodity Contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	(0.1)	(2.4)
Gain (Loss) Reclassified from AOCI into Net Earnings	0.0	(2.6)
Foreign Currency Exchange Contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	0.5	(0.1)
Gain (Loss) Reclassified from AOCI into Net Earnings	0.3	$ 0.0
Foreign Currency Exchange Contracts
Derivative [Line Items]
Gain (Loss) Reclassified from AOCI into Net Earnings	0.1
Interest Rate Contracts
Derivative [Line Items]
Gain (Loss) Recognized in OCI	0.0
Gain (Loss) Reclassified from AOCI into Net Earnings	$ 0.0

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 25
-Paragraph 6A
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480682/815-20-25-6A

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480237/815-40-50-5

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Amount, after tax, of reclassification of gain (loss) from accumulated other comprehensive income (AOCI) for derivative instrument designated and qualifying as cash flow hedge included in assessment of hedge effectiveness.

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Amount, before adjustments, of tax expense (benefit) for gain (loss) from increase (decrease) in value of excluded component of derivative designated and qualifying as hedge. Adjustments include, but are not limited to, reclassifications for sale and settlement, and amounts recognized under systematic and rational method.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-11

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 20
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480627/815-20-45-3

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 220
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 10A
-Subparagraph (dd)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482790/220-10-45-10A

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