Amount of contribution received by defined benefit plan from employer which increases plan assets.

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Name:	us-gaap_DefinedBenefitPlanContributionsByEmployer
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Employee Retirement Plans - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Aug. 31, 2026	Aug. 31, 2025	May 31, 2027
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plans	$ 2.9
Forecast
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plans			$ 8.8
U.S
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	0.0	$ 0.0
Non-U.S
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	1.2	$ 0.0
Kloeckner [Member] \| U.S \| Overfunded Status
Defined Benefit Plan Disclosure [Line Items]
Funded status plan	0.1
Kloeckner [Member] \| U.S \| Underfunded Status \| Defined Benefit Pension and Other Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Funded status plan	10.3
Kloeckner [Member] \| Non-U.S \| Overfunded Status
Defined Benefit Plan Disclosure [Line Items]
Funded status plan	333.8
Kloeckner [Member] \| Non-U.S \| Underfunded Status
Defined Benefit Plan Disclosure [Line Items]
Funded status plan	8.7
Sitem Group \| Stanzwerk AG Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Curtailment gain	$ 1.2