v3.25.2
Comprehensive Income (Loss) - Components of Changes in AOCI (Detail) - USD ($)
$ in Thousands
 12 Months Ended
May 31, 2025
May 31, 2024
May 31, 2023
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance $ 891,012 $ 1,821,628 $ 1,613,962
Income tax effect 1,084 (4,376) (2,055)
Separation of Worthington Steel   (1,033,245)  
Balance 938,237 891,012 1,821,628
Foreign Currency Translation      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance (669) (22,123)  
OCI before reclassifications 2,297 1,987  
Reclassification adjustments to income [1],[2]   8,591  
Income tax effect 953 2  
Separation of Worthington Steel   10,874  
Balance 2,581 (669) (22,123)
Pension Liability Adjustment      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance (441) (1,730)  
OCI before reclassifications (83) 419  
Reclassification adjustments to income [1],[2]   9,184  
Income tax effect 159 (2,330)  
Separation of Worthington Steel   (5,984)  
Balance (365) (441) (1,730)
Cash Flow Hedges      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance 1,564 674  
OCI before reclassifications 689 14,721  
Reclassification adjustments to income [1],[2] (391) (6,176)  
Income tax effect (28) (2,048)  
Separation of Worthington Steel   (5,607)  
Balance 1,834 1,564 674
AOCI      
Accumulated Other Comprehensive Income Loss [Line Items]      
Balance 454 (23,179) (22,850)
OCI before reclassifications 2,903 17,127  
Reclassification adjustments to income [1],[2] (391) 11,599  
Income tax effect 1,084 (4,376)  
Separation of Worthington Steel   (717)  
Balance $ 4,050 $ 454 $ (23,179)
[1] Cash flow hedges – disclosed in “Note Q – Derivative Instruments and Hedging Activities.”
[2] Reflects the following pension liability adjustments:
•
The acceleration of deferred pension costs in AOCI related to separate pension lift-out transactions completed in February 2024 to transfer the pension benefit obligation under the Gerstenslager Plan to third-party insurance companies. Refer to “Note L – Employee Retirement Plans.”
•
The settlement of certain participant balances within the pension plan maintained by WAVE during fiscal 2024.