v3.25.4
Pending Acquisition (Tables)
12 Months Ended
Dec. 31, 2025
Business Combination, Asset Acquisition, Transaction between Entities under Common Control, and Joint Venture Formation [Abstract]  
Schedule of Acquisition-Related Expense Associated with the Merger Agreement
Union Pacific incurred the following acquisition-related expense associated with the merger agreement for the year ended December 31:
Millions2025
Acquisition-related expense
Purchased services and materials$68 
Other4 
Total acquisition-related expense [a]$72 
[a]Certain acquisition-related costs are non-deductible for income tax purposes.