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Accumulated Other Comprehensive Loss | 3 Months Ended
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Mar. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Accumulated Other Comprehensive Loss | Note M – Accumulated Other Comprehensive Loss The components of Accumulated other comprehensive loss on the Consolidated Balance Sheets at December 31, 2020 and March 31, 2021 and the changes during the three-month period ended March 31, 2021, 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, 2020 | $ | (324,011) |  |  | (275,632) |  |  | (1,690) |  |  | (601,333) |
Components of other comprehensive income (loss): |  |  |  |  |  |  |
Before reclassifications to income and retained earnings | 19,897 |  |  | — |  |  | — |  |  | 19,897 |
Reclassifications to income | — |  |  | 4,136 |  | ¹ | 1,690 |  | ² | 5,826 |
Net other comprehensive income (loss) | 19,897 |  |  | 4,136 |  |  | 1,690 |  |  | 25,723 |
Balance at March 31, 2021 | $ | (304,114) |  |  | (271,496) |  |  | — |  |  | (575,610) |
1 Reclassifications before taxes of $5,252 are included in the computation of net periodic benefit expense for the three-month period ended March 31, 2021. See Note H for additional information. Related income taxes of $1,116 are included in Income tax expense (benefit) for the three-month period ended March 31, 2021. 2 Reclassifications before taxes of $2,140 are included in Interest expense, net, for the three-month period ended March 31, 2021. Related income taxes of $450 are included in Income tax expense (benefit) for the three-month period ended March 31, 2021. See Note L for additional information.

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- Definition The entire disclosure for comprehensive income, which includes, but is not limited to, 1) the amount of income tax expense or benefit allocated to each component of other comprehensive income, including reclassification adjustments, 2) the reclassification adjustments for each classification of other comprehensive income and 3) the ending accumulated balances for each component of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -URI http://asc.fasb.org/topic&trid=2134417 + Details
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