v3.26.1
Document and Entity Information
12 Months Ended
Dec. 31, 2025
Document Information [Line Items]  
Document Type 11-K
Entity Central Index Key 0000878927
Entity Registrant Name Old Dominion Freight Line, Inc.
Amendment Flag false
EBP 002  
Document Information [Line Items]  
Document Type 11-K
Document Period End Date Dec. 31, 2025
Document Fiscal Year Focus 2025
Entity Central Index Key 0000878927
Entity Registrant Name Old Dominion Freight Line, Inc.
Amendment Flag false
Document Fiscal Period Focus FY