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Other Income (Loss) (Notes) | 12 Months Ended
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Dec. 31, 2021
Other Income and Expenses [Abstract] |
OTHER INCOME/(LOSS) | OTHER INCOME/(LOSS) The amounts included in Other income/(loss), net for the years ended December 31 were as follows (in millions):
| 2019 |  | 2020 |  | 2021
Net periodic pension and OPEB income/(cost), excluding service cost (a) | $ | (1,602) |  |  | $ | 69 |  |  | $ | 5,997 |
Investment-related interest income | 809 |  |  | 452 |  |  | 254 |
Interest income/(expense) on income taxes | (29) |  |  | (2) |  |  | 7 |
Realized and unrealized gains/(losses) on cash equivalents, marketable securities, and other investments (b) | 144 |  |  | 325 |  |  | 9,159 |
Gains/(Losses) on changes in investments in affiliates (c) | 20 |  |  | 3,446 |  |  | 368 |
Gains/(Losses) on extinguishment of debt (d) | (55) |  |  | (1) |  |  | (1,702) |
Royalty income | 381 |  |  | 493 |  |  | 619 |
Other | 106 |  |  | 117 |  |  | 31 |
Total | $ | (226) |  |  | $ | 4,899 |  |  | $ | 14,733 |
__________ (a) See Note 17 for additional information relating to our pension and OPEB remeasurements. (b) See Note 15 for additional information relating to our investment in Rivian. (c) See Note 22 for additional information relating to our Argo AI, LLC (“Argo AI”) and Volkswagen AG (“VW”) transaction in 2020. (d) See Note 19 for additional information relating to our debt repurchase.

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- Definition The entire disclosure for other income or other expense items (both operating and nonoperating). Sources of nonoperating income or nonoperating expense that may be disclosed, include amounts earned from dividends, interest on securities, profits (losses) on securities, net and miscellaneous other income or income deductions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -URI http://asc.fasb.org/topic&trid=2122503 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 610 -URI http://asc.fasb.org/topic&trid=49130413 + Details
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