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Supplemental Income Statement Information (Tables)
3 Months Ended
Mar. 31, 2021
Supplemental Income Statement Information  
Schedule of other expense (income)

    

Three months ended 

March 31,

(Millions)

2021

    

2020

Interest expense

$

132

$

123

Interest income

 

(4)

 

(10)

Pension and postretirement net periodic benefit cost (benefit)

(79)

(38)

Total

$

49

$

75