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Note 6 - Other Income (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Other Nonoperating Income, by Component [Table Text Block]
  

Three Months Ended

  

Nine Months Ended

 
  

September 30,

  

September 30,

 

Millions

 

2022

  

2021

  

2022

  

2021

 

Real estate income [a] [b]

 $103  $53  $309  $209 

Net periodic pension benefit/(cost)

  22   7   63   18 

Environmental remediation and restoration

  (4)  (4)  (35)  (13)

Other [a]

  3   (18)  (3)  - 

Total

 $124  $38  $334  $214