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ACCUMULATED OTHER COMPREHENSIVE LOSS | 12 Months Ended
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Dec. 31, 2020
Equity [Abstract] |
ACCUMULATED OTHER COMPREHENSIVE LOSS | ACCUMULATED OTHER COMPREHENSIVE LOSS Comprehensive income presents a measure of all changes in shareholders’ equity except for changes resulting from transactions with shareholders in their capacity as shareholders. The following summary sets forth the components of accumulated other comprehensive loss, net of tax:
|  | December 31,
|  | 2020 |  | 2019
|  | (In thousands)
Cumulative translation adjustments |  | $ | (146,529) |  |  | $ | (162,243) |
Net actuarial loss and prior service cost |  | (655,040) |  |  | (667,459) |
Unrealized gain (loss) from cash flow hedges |  | (15,636) |  |  | (6,789) |
Accumulated other comprehensive loss |  | $ | (817,205) |  |  | $ | (836,491) |
The gain from currency translation adjustments in 2020 was primarily due to the strengthening of the British Pound and Canadian Dollar against the U.S. Dollar. Refer to Note 18, "Employee Benefit Plans," for further information related to net actuarial loss and prior services cost.

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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 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(21)) -URI http://asc.fasb.org/extlink&oid=120395209&loc=SL114868664-224227 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(23)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(19)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 + Details
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