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RECLASSIFICATIONS FROM OTHER COMPREHENSIVE INCOME (LOSS) (Tables) | 12 Months Ended
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Dec. 31, 2020
Comprehensive Income (Loss), Net of Tax, Attributable to Parent [Abstract] |
Schedule of reclassifications from accumulated other comprehensive income (loss) to the condensed consolidated statements of operations | 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 |  |  |

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- Definition Tabular disclosure of information about items reclassified out of accumulated other comprehensive income (loss). + References No definition available. + Details
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