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Accumulated Other Comprehensive Loss (Tables) | 12 Months Ended
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Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Summary of the entity's accumulated other comprehensive loss by component | The table below summarizes changes in accumulated other comprehensive loss recorded on our consolidated balance sheet by component for the year ended December 31, 2022:
| Pension Plans |  | Post-Retirement Benefit Plans |  | Foreign Currency Translation Adjustment and Other |  | Interest Rate Swap |  | Total
| (Dollars in millions)
Balance at December 31, 2021 | $ | (1,577) |  |  | (164) |  |  | (400) |  |  | (17) |  |  | (2,158) |
Other comprehensive income (loss) before reclassifications | 98 |  |  | 473 |  |  | (134) |  |  | — |  |  | 437 |
Amounts reclassified from accumulated other comprehensive loss | 494 |  |  | (1) |  |  | 112 |  |  | 17 |  |  | 622 |
Net current-period other comprehensive income (loss) | 592 |  |  | 472 |  |  | (22) |  |  | 17 |  |  | 1,059 |
Balance at December 31, 2022 | $ | (985) |  |  | 308 |  |  | (422) |  |  | — |  |  | (1,099) |
The table below summarizes changes in accumulated other comprehensive loss recorded on our consolidated balance sheet by component for the year ended December 31, 2021:
| Pension Plans |  | Post-Retirement Benefit Plans |  | Foreign Currency Translation Adjustment and Other |  | Interest Rate Swap |  | Total
| (Dollars in millions)
Balance at December 31, 2020 | $ | (2,197) |  |  | (272) |  |  | (265) |  |  | (79) |  |  | (2,813) |
Other comprehensive loss before reclassifications | 197 |  |  | 94 |  |  | (135) |  |  | (1) |  |  | 155 |
Amounts reclassified from accumulated other comprehensive loss | 423 |  |  | 14 |  |  | — |  |  | 63 |  |  | 500 |
Net current-period other comprehensive income (loss) | 620 |  |  | 108 |  |  | (135) |  |  | 62 |  |  | 655 |
Balance at December 31, 2021 | $ | (1,577) |  |  | (164) |  |  | (400) |  |  | (17) |  |  | (2,158) |
Schedule of reclassifications out of accumulated other comprehensive loss by component | The amount of realized losses reclassified from accumulated other comprehensive loss to the statement of operations consists of the following (in millions):
Derivatives designated as hedging instruments | 2022 |  | 2021 |  | 2020
Cash flow hedging contracts |  |  |  |  |
Years Ended December 31, | $ | 22 |  |  | 83 |  |  | 62 |
The table below presents further information about our reclassifications out of accumulated other comprehensive loss by component for the year ended December 31, 2022:
Year Ended December 31, 2022 |  | Decrease (Increase) in Net Income |  | Affected Line Item in Consolidated Statement of Operations
|  | (Dollars in millions) |  |
Interest rate swaps |  | $ | 22 |  |  | Interest expense
Income tax benefit |  | (5) |  |  | Income tax expense
Net of tax |  | $ | 17 |  |  |
Amortization of pension & post-retirement plans (1) |  |  |  |
Net actuarial loss |  | $ | 121 |  | Other income (expense), net
Prior service cost |  | (2) |  | Other income (expense), net
Reclassification of net actuarial loss and prior service credit to gain on the sale of business |  | 539 |  |  | Gain on sale of businesses
Total before tax |  | 658 |  |  |
Income tax benefit |  | (165) |  | Income tax expense
Net of tax |  | $ | 493 |  |  |
Reclassification of realized loss on foreign currency translation to gain on the sale of business |  | $ | 112 |  |  | Gain on sale of businesses
Income tax benefit |  | — |  | Income tax expense
Net of tax |  | $ | 112 |  |  |
________________________________________________________________________ (1)See Note 11—Employee Benefits for additional information on our net periodic benefit (expense) income related to our pension and post-retirement plans. The table below presents further information about our reclassifications out of accumulated other comprehensive loss by component for the year ended December 31, 2021:
Year Ended December 31, 2021 |  | (Decrease) Increase in Net Loss |  | Affected Line Item in Consolidated Statement of Operations
|  | (Dollars in millions) |  |
Interest rate swap |  | $ | 83 |  |  | Interest expense
Income tax benefit |  | (20) |  |  | Income tax expense
Net of tax |  | $ | 63 |  |  |
Amortization of pension & post-retirement plans (1) |  |  |  |
Net actuarial loss |  | $ | 190 |  |  | Other income (expense), net
Settlement charge |  | 383 |  |  | Other income (expense), net
Prior service cost |  | 6 |  |  | Other income (expense), net
Total before tax |  | 579 |  |  |
Income tax benefit |  | (142) |  |  | Income tax expense
Net of tax |  | $ | 437 |  |  |
________________________________________________________________________ (1)See Note 11—Employee Benefits for additional information on our net periodic benefit (expense) income related to our pension and post-retirement plans.

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