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Supplemental Income (Loss) Statement Information | 12 Months Ended
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Dec. 31, 2023
Other Income and Expenses [Abstract] |
Supplemental Income (Loss) Statement Information | NOTE 6. Supplemental Income (Loss) Statement Information Other expense (income), net consists of the following:
(Millions) |  |  |  |  |  | 2023 |  | 2022 |  | 2021
Interest expense |  |  |  |  |  | $ | 942 |  | $ | 462 |  | $ | 488 |
Interest income |  |  |  |  |  | (253) |  |  | (67) |  |  | (26) |
Pension and postretirement net periodic benefit cost (benefit) |  |  |  |  |  | (129) |  |  | (248) |  |  | (297) |
Total |  |  |  |  |  | $ | 560 |  | $ | 147 |  | $ | 165 |
Interest expense includes $566 million, $462 million and $488 million in 2023, 2022 and 2021, respectively, related to outstanding debt. Beginning in 2023, interest expense also includes imputed interest associated with the obligations resulting from the PWS Settlement and the CAE Settlement (discussed in Note 18). 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. Refer to Note 14 for additional details on the components of pension and postretirement net periodic benefit cost (benefit).

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- Definition The entire disclosure for the components of non-operating income or non-operating expense, including, but not limited to, amounts earned from dividends, interest on securities, gain (loss) on securities sold, equity earnings of unconsolidated affiliates, gain (loss) on sales of business, interest expense and other miscellaneous income or expense items. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(7)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(9)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483621/220-10-S99-2 + Details
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