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Supplemental Income (Loss) Statement Information
 9 Months Ended
Sep. 30, 2024
Other Income and Expenses [Abstract]  
Supplemental Income (Loss) Statement Information
NOTE 7. Supplemental Income (Loss) Statement Information
Other expense (income), net consists of the following:
Three months ended
September 30,		Nine months ended
September 30,
(Millions)2024202320242023
Interest expense$276 $304 $939 $571
Interest income(107)(72)(360)(160)
Pension and postretirement net periodic benefit cost (benefit)7 (26)792 (77)
Solventum ownership - change in value
(581)— (1,694)—
Total$(405)$206 $(323)$334
Beginning in the second quarter and third quarter of 2023, interest expense also includes imputed interest associated with the obligations resulting from the PWS Settlement and the CAE Settlement, respectively (discussed in Note 17).
Pension and postretirement net periodic benefit income described in the table above include all components of defined benefit plan net periodic benefit cost (benefit) except service cost, which is reported in various operating expense lines. The non-service cost component above for the nine months ended September 30, 2024 was impacted by a $795 million pension settlement charge. Refer to Note 13 for additional details on the components of pension and postretirement net periodic benefit cost (benefit).
Solventum ownership - change in value relates to the change in value of 3M's retained ownership interest in common stock of Solventum Corporation, an independent public company. Solventum separated from 3M in April 2024 (discussed in Note 2). At September 30, 2024, the balance of net unrealized gain on this investment is $1.7 billion.