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OTHER INCOME AND EXPENSE (Notes)
12 Months Ended
Dec. 31, 2020
Other Income and Expenses [Abstract]  
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:
Years Ended December 31,
202020192018
(Thousands of dollars)
Net periodic benefit cost other than service cost$(5,071)$(5,895)$(8,824)
Earnings (losses) on investments associated with nonqualified employee benefit plans4,616 5,268 (1,343)
Other, net(2,565)(2,349)(1,192)
Total other expense, net$(3,020)$(2,976)$(11,359)