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Accumulated Other Comprehensive Loss (Tables) | 9 Months Ended
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Sep. 30, 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 September 30, 2020 and the changes during the nine-month period ended September 30, 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 | (39,520) |  |  | (55,707) |  |  | — |  |  | (95,227) |
Reclassifications to income | — |  |  | 10,488 |  | ¹ | 905 |  | ² | 11,393 |
Net other comprehensive income (loss) | (39,520) |  |  | (45,219) |  |  | 905 |  |  | (83,834) |
Balance at September 30, 2020 | $ | (392,772) |  |  | (263,234) |  |  | (1,989) |  |  | (657,995) |
1 Reclassifications before taxes of $13,720 are included in the computation of net periodic benefit expense for the nine-month period ended September 30, 2020. See Note H for additional information. Related income taxes of $3,232 are included in Income tax expense (benefit) for the nine-month period ended September 30, 2020. 2 Reclassifications before taxes of $1,147 are included in Interest expense, net, for the nine-month period ended September 30, 2020. Related income taxes of $242 are included in Income tax expense (benefit) for the nine-month period ended September 30, 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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