v3.26.1
Document and Entity Information
12 Months Ended
Dec. 31, 2025
Document Information [Line Items]  
Document Type 11-K
Entity Registrant Name ASHLAND INC.
Entity Central Index Key 0001674862
Amendment Flag false
EBP 010  
Document Information [Line Items]  
Document Type 11-K
Document Period End Date Dec. 31, 2025
Current Fiscal Year End Date --12-31
Entity Registrant Name ASHLAND INC.
Entity Central Index Key 0001674862
Document Fiscal Period Focus FY
Document Fiscal Year Focus 2025
Amendment Flag false