v3.26.1
Document and Entity Information
12 Months Ended
Dec. 31, 2025
Document Information [Line Items]  
Document Type 11-K
Document Period End Date Dec. 31, 2025
Entity Central Index Key 0001968487
Entity Registrant Name WORTHINGTON STEEL, INC.
Amendment Flag false
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY