v3.26.1
Comprehensive Income (Loss) - Components of Changes in AOCI (Detail) - USD ($)
$ in Millions
 12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance $ 1,197.9 $ 1,117.5 $ 1,154.6
Income tax effect (0.3) (0.3) 0.9
Balance 1,197.6 1,197.9 1,117.5
Foreign Currency Translation, Net      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance (10.7) (11.9)  
Other comprehensive income (loss) before reclassifications 4.5 1.2  
Reclassification adjustments to income [1] 0.0 0.0  
Income tax effect 0.0 0.0  
Balance (6.2) (10.7) (11.9)
Net Investment Hedge      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance 0.0 0.0  
Other comprehensive income (loss) before reclassifications (1.8) 0.0  
Reclassification adjustments to income 0.0 [1] 0.0  
Income tax effect 0.5 0.0  
Balance (1.3) 0.0 0.0
Foreign Currency Translation      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance (10.7) (11.9)  
Other comprehensive income (loss) before reclassifications (2.7) 1.2  
Reclassification adjustments to income [1] 0.0 0.0  
Income tax effect (0.5) 0.0  
Balance (7.5) (10.7) (11.9)
Pension Liability Adjustment      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance 7.3 8.4  
Other comprehensive income (loss) before reclassifications 2.2 1.8  
Reclassification adjustments to income [1] (0.7) (3.2)  
Income tax effect (0.2) 0.3  
Balance 9.0 7.3 8.4
Cash Flow Hedges      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance (0.6) (2.6)  
Other comprehensive income (loss) before reclassifications 6.5 (4.8)  
Reclassification adjustments to income [1] 2.5 7.4  
Income tax effect 1.0 (0.6)  
Balance 2.4 (0.6) (2.6)
Accumulated Other Comprehensive Loss      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance (4.0) (6.1) (2.1)
Other comprehensive income (loss) before reclassifications 11.4 (1.8)  
Reclassification adjustments to income [1] (3.2) 4.2  
Income tax effect 0.3 (0.3)  
Balance $ 3.9 $ (4.0) $ (6.1)
[1] The statements of earnings classification of amounts reclassified to net income include:
a.
Cash flow hedges – disclosed in “Note 16 – Derivative Financial Instruments and Hedging Activities”; and
b.
Pension liability adjustment – reflects the following pension liability adjustments as disclosed in “Note 13 – Employee Retirement Plans”
i.
Amortization of net (gain) loss of the Pension Benefits and Other Benefits.
ii.
The acceleration of deferred pension costs in AOCI related to the pension plan lift-out transaction to transfer a portion of the total projected benefit obligation of the Tempel pension plan to a third-party insurance company.
iii.
Recognition of a gain in fiscal 2026 related to a pension settlement due to net lump sum payments being higher than the settlement threshold.