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Note 3 - Operations and Segmentation (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Disaggregation of Revenue [Table Text Block]

Millions, for the Three Months Ended March 31,

 

2024

   

2023

 

Bulk

  $ 1,817     $ 1,897  

Industrial

    2,104       2,017  

Premium

    1,695       1,742  

Total freight revenues

  $ 5,616     $ 5,656  

Other subsidiary revenues

    217       235  

Accessorial revenues

    174       151  

Other

    24       14  

Total operating revenues

  $ 6,031     $ 6,056