v3.26.1
Valuation and Qualifying Accounts and Reserves (Schedule II) (Detail) - USD ($)
$ in Thousands
 12 Months Ended
May 31, 2026
May 31, 2025
May 31, 2024
Accrued Product Liability Reserves, Current      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period $ 24,781 $ 23,353 $ 16,995
Additions Charged to Expense 13,897 10,411 19,991
Acquisitions (Disposals) of Businesses and Reclassifications 333 338  
(Deductions) Additions [1] (3,494) (9,321) (13,633)
Balance at End of Period 35,517 24,781 23,353
Accrued Environmental Reserves, Current      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 1,426 1,148 1,027
Additions Charged to Expense 5,178 675 380
Acquisitions (Disposals) of Businesses and Reclassifications     325
(Deductions) Additions (1,258) (397) (584)
Balance at End of Period 5,346 1,426 1,148
Accrued Product Liability Reserves, Noncurrent      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 25,206 25,289 22,849
Additions Charged to Expense 6,003 5,843 8,803
(Deductions) Additions [1] (4,973) (5,926) (6,363)
Balance at End of Period 26,236 25,206 25,289
Accrued Environmental Reserves, Noncurrent      
Valuation and Qualifying Accounts Disclosure [Line Items]      
Balance at Beginning of Period 2,719 2,574 6,173
Additions Charged to Expense 1,171 499 582
Acquisitions (Disposals) of Businesses and Reclassifications     (325)
(Deductions) Additions (378) (354) (3,856)
Balance at End of Period $ 3,512 $ 2,719 $ 2,574
[1] Primarily claims paid during the year, net of insurance contributions.