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RECLASSIFICATIONS FROM OTHER COMPREHENSIVE INCOME (LOSS) | 12 Months Ended
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Dec. 31, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
RECLASSIFICATIONS FROM OTHER COMPREHENSIVE INCOME (LOSS) | RECLASSIFICATIONS FROM ACCUMULATED OTHER COMPREHENSIVE LOSS The reclassifications from accumulated other comprehensive loss to the consolidated statements of operations were as follows, in millions:
Accumulated Other Comprehensive Loss |  | 2020 |  | 2019 |  | 2018 |  | Statement of Operations Line Item
Amortization of defined-benefit pension and other post-retirement benefits: |  |  |  |  |  |  |  |
Actuarial losses, net and prior service cost |  | $ | 26 |  |  | $ | 20 |  |  | $ | 20 |  |  | Other income (expense), net
Tax (benefit) |  | (7) |  |  | (5) |  |  | (5) |  |  |
Net of tax |  | $ | 19 |  |  | $ | 15 |  |  | $ | 15 |  |  |
Interest rate swaps |  | $ | 2 |  |  | $ | 2 |  |  | $ | 2 |  |  | Interest expense
Tax (benefit) |  | (1) |  |  | — |  |  | — |  |  |
Net of tax |  | $ | 1 |  |  | $ | 2 |  |  | $ | 2 |  |  |
In addition to the above amounts, we reclassified $9 million of deferred currency translation losses from accumulated other comprehensive loss to the consolidated statement of operations in conjunction with the liquidation of certain UK dormant entities upon receiving final regulatory approval in 2020. Additionally, we reclassified $14 million of deferred currency translation losses from accumulated other comprehensive loss to the consolidated statement of operations in conjunction with the disposition of UKWG in September 2019. In addition, as of March 31, 2018, we adopted ASU 2018-02, "Income Statement-Reporting Comprehensive Income (Topic 220): Reclassification of Certain Tax Effects from Accumulated Other Comprehensive Income." As a result of the adoption, we reclassified $59 million of the disproportionate tax benefit related to various defined-benefit plans from accumulated other comprehensive loss to retained earnings (deficit).

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