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Note 5 - Other Income (Tables)
6 Months Ended
Jun. 30, 2023
Notes Tables  
Schedule of Other Nonoperating Income, by Component [Table Text Block]
  

Three Months Ended

  

Six Months Ended

 
  

June 30,

  

June 30,

 

Millions

 

2023

  

2022

  

2023

  

2022

 

Real estate income [a] [b]

 $69  $146  $245  $206 

Net periodic pension benefit/(costs)

  14   21   28   41 

Environmental remediation and restoration

  (3)  (5)  (22)  (31)

Other [a]

  13   1   26   (6)

Total

 $93  $163  $277  $210