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Note 6 - Other Income (Tables)
3 Months Ended
Mar. 31, 2024
Notes Tables  
Schedule of Other Nonoperating Income, by Component [Table Text Block]

Millions, for the Three Months Ended March 31,

 

2024

   

2023

 

Real estate income [a]

  $ 65     $ 176  

Net periodic pension benefit/(costs)

    15       14  

Non-operating property environmental remediation and restoration

    (6 )     (19 )

Other

    18       13  

Total

  $ 92     $ 184