XML 40 R28.htm IDEA: XBRL DOCUMENT v3.21.2
Supplemental Income Statement Information (Tables)
6 Months Ended
Jun. 30, 2021
Supplemental Income Statement Information  
Schedule of other expense (income)

    

Three months ended 

    

Six months ended 

June 30,

June 30,

(Millions)

2021

    

2020

    

2021

2020

Interest expense

$

121

$

137

$

253

$

260

Interest income

 

(8)

 

(9)

 

(12)

 

(19)

Pension and postretirement net periodic benefit cost (benefit)

(80)

(38)

(159)

(76)

Total

$

33

$

90

$

82

$

165