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Supplemental Income Statement Information | 12 Months Ended
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Dec. 31, 2018
Supplemental Income Statement Information |
Supplemental Income Statement Information | NOTE 6. Supplemental Income Statement Information Other expense (income), net consists of the following:
(Millions) |  | 2018 |  | 2017 |  | 2016 |
Interest expense |  | $ | 350 |  | $ | 322 |  | $ | 199 |
Interest income |  |  | (70) |  |  | (50) |  |  | (29) |
Pension and postretirement net periodic benefit cost (benefit) |  |  | (73) |  |  | (128) |  |  | (196) |
Total |  | $ | 207 |  | $ | 144 |  | $ | (26) |
Pension and postretirement net periodic benefit costs described in the table above include all components of defined benefit plan net periodic benefit costs except service cost, which is reported in various operating expense lines. Refer to Note 13 for additional details on the components of pension and postretirement net periodic benefit costs. The Company recorded an early debt extinguishment charge of approximately $96 million which was included within interest expense in the fourth quarter of 2017.

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