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OTHER INCOME AND OTHER EXPENSE (Notes) | 12 Months Ended
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Dec. 31, 2023
Other Income and Other Expense Disclosure [Text Block] | OTHER INCOME AND OTHER EXPENSE The following table sets forth the components of other income and other expense for the periods indicated:
|  |  |  | Year Ended December 31,
|  |  |  |  |  | 2023 |  | 2022 |  | 2021
|  |  |  |  |  | (Thousands of dollars)
Net periodic benefit (cost) other than service cost |  |  |  |  |  | $ | 4,017 |  |  | $ | 3,766 |  |  | $ | (3,930) |
Earnings (losses) on investments associated with nonqualified employee benefit plans |  |  |  |  |  | 4,826 |  |  | (7,197) |  |  | 3,699 |
Other income (expense), net |  |  |  |  |  | 633 |  |  | (752) |  |  | (2,976) |
Total other income (expense), net |  |  |  |  |  | $ | 9,476 |  |  | $ | (4,183) |  |  | $ | (3,207) |

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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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Period Type: | duration