v3.25.4
Related Parties (Details) - USD ($)
$ in Millions
12 Months Ended
Dec. 31, 2025
Dec. 31, 2024
Dec. 31, 2023
Related Party Transaction [Line Items]      
Equipment and other rents $ 912 $ 920 $ 947
Accounts payable, current 804 847  
UPRR | Equity Method Investee      
Related Party Transaction [Line Items]      
Equipment and other rents 447 432 $ 399
Accounts payable, current $ 72 70  
TTX Company | UPRR      
Related Party Transaction [Line Items]      
Equity method investment, ownership percentage 37.03%    
Equity method investments $ 2,000 $ 1,900