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Accumulated Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2020
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Components of Accumulated Other Comprehensive Loss | The components of Accumulated other comprehensive loss on the Consolidated Balance Sheets at December 31, 2019 and March 31, 2020 and the changes during the three-month period ended March 31, 2020, are presented net of taxes in the following table.
(Thousands of dollars) | Foreign Currency Translation Gains (Losses) |  | Retirement and Postretirement Benefit Plan Adjustments |  | Deferred Loss on Interest Rate Derivative Hedges |  | Total
Balance at December 31, 2019 | $ | (353,252 | ) |  | (218,015 | ) |  | (2,894 | ) |  | (574,161 | )
Components of other comprehensive income (loss): |  |  |  |  |  |  |
Before reclassifications to income and retained earnings | (118,411 | ) |  | (13,054 | ) |  | — |  |  | (131,465 | )
Reclassifications to income | — |  |  | 3,343 |  | ¹ | 299 |  | ² | 3,642 |
Net other comprehensive income (loss) | (118,411 | ) |  | (9,711 | ) |  | 299 |  |  | (127,823 | )
Balance at March 31, 2020 | $ | (471,663 | ) |  | (227,726 | ) |  | (2,595 | ) |  | (701,984 | )
1 Reclassifications before taxes of $4,250 are included in the computation of net periodic benefit expense for the three-month period ended March 31, 2020. See Note H for additional information. Related income taxes of $907 are included in Income tax expense (benefit) for the three-month period ended March 31, 2020. 2 Reclassifications before taxes of $379 are included in Interest expense, net, for the three-month period ended March 31, 2020. Related income taxes of $80 are included in Income tax expense (benefit) for the three-month period ended March 31, 2020. See Note L for additional information.

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=118930883&loc=SL7669686-108580 + Details
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