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Accumulated Other Comprehensive Loss (Tables) | 9 Months Ended
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Sep. 30, 2023
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of the Entity's Accumulated Other Comprehensive Income (Loss) by Component | The table below summarizes changes in accumulated other comprehensive loss recorded on our consolidated balance sheet by component for the nine months ended September 30, 2023:
| Pension Plans |  | Post-Retirement Benefit Plans |  | Foreign Currency Translation Adjustment and Other |  |  |  | Total
| (Dollars in millions)
Balance at December 31, 2022 | $ | (985) |  |  | 308 |  |  | (422) |  |  |  |  | (1,099) |
Other comprehensive income before reclassifications | — |  |  | — |  |  | 3 |  |  |  |  | 3 |
Amounts reclassified from accumulated other comprehensive loss | 55 |  |  | (16) |  |  | — |  |  |  |  | 39 |
Net current-period other comprehensive income (loss) | 55 |  |  | (16) |  |  | 3 |  |  |  |  | 42 |
Balance at September 30, 2023 | $ | (930) |  |  | 292 |  |  | (419) |  |  |  |  | (1,057) |
The table below summarizes changes in accumulated other comprehensive loss recorded on our consolidated balance sheets by component for the nine months ended September 30, 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 loss before reclassifications | — |  |  | — |  |  | (245) |  |  | — |  |  | (245) |
Amounts reclassified from accumulated other comprehensive loss | 68 |  |  | 4 |  |  | 112 |  |  | 17 |  |  | 201 |
Net current-period other comprehensive income (loss) | 68 |  |  | 4 |  |  | (133) |  |  | 17 |  |  | (44) |
Balance at September 30, 2022 | $ | (1,509) |  |  | (160) |  |  | (533) |  |  | — |  |  | (2,202) |
Schedule of Reclassifications Out of Accumulated Other Comprehensive Income (Loss) by Component | The tables below present further information about our reclassifications out of accumulated other comprehensive loss by component for the three and nine months ended September 30, 2023:
Three Months Ended September 30, 2023 |  | Decrease (Increase) in Net Income |  | Affected Line Item in Consolidated Statement of Operations
|  | (Dollars in millions) |  |
Amortization of pension & post-retirement plans(1) |  |  |  |
Net actuarial loss |  | $ | 22 |  |  | Other expense, net
Prior service credit |  | (4) |  |  | Other expense, net
Total before tax |  | 18 |  |  |
Income tax benefit |  | (5) |  |  | Income tax (benefit) expense
Net of tax |  | $ | 13 |  |  |
Nine Months Ended September 30, 2023 |  | Decrease (Increase) in Net Income |  | Affected Line Item in Consolidated Statement of Operations
|  | (Dollars in millions) |  |
Amortization of pension & post-retirement plans(1) |  |  |  |
Net actuarial loss |  | $ | 63 |  |  | Other expense, net
Prior service credit |  | (11) |  |  | Other expense, net
Total before tax |  | 52 |  |  |
Income tax benefit |  | (13) |  |  | Income tax (benefit) expense
Net of tax |  | $ | 39 |  |  |
________________________________________________________________________ (1)See Note 8—Employee Benefits for additional information on our net periodic benefit expense (income) related to our pension and post-retirement plans. The tables below present further information about our reclassifications out of accumulated other comprehensive loss by component for the three and nine months ended September 30, 2022:
Three Months Ended September 30, 2022 |  | Decrease (Increase) in Net Income |  | Affected Line Item in Consolidated Statement of Operations
|  | (Dollars in millions) |  |
Interest rate swaps |  | $ | — |  |  | Interest expense
Income tax benefit |  | — |  |  | Income tax (benefit) expense
Net of tax |  | $ | — |  |  |
Amortization of pension & post-retirement plans(1) |  |  |  |
Net actuarial loss |  | $ | 32 |  |  | Other expense, net
Prior service cost |  | (2) |  |  | Other expense, net
Total before tax |  | 30 |  |  |
Income tax benefit |  | (7) |  |  | Income tax (benefit) expense
Net of tax |  | $ | 23 |  |  |
Reclassification of realized loss on foreign currency translation to gain on sale of business |  | $ | 112 |  |  | Gain on sale of business
Income tax benefit |  | — |  |  | Income tax (benefit) expense
Net of tax |  | $ | 112 |  |  |
Nine Months Ended September 30, 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 (benefit) expense
Net of tax |  | $ | 17 |  |  |
Amortization of pension & post-retirement plans(1) |  |  |  |
Net actuarial loss |  | $ | 99 |  |  | Other expense, net
Prior service cost |  | (3) |  |  | Other expense, net
Total before tax |  | 96 |  |  |
Income tax benefit |  | (24) |  |  | Income tax (benefit) expense
Net of tax |  | $ | 72 |  |  |
Reclassification of realized loss on foreign currency translation to gain on sale of business |  | $ | 112 |  |  | Gain on sale of business
Income tax benefit |  | — |  |  | Income tax (benefit) expense
Net of tax |  | $ | 112 |  |  |
________________________________________________________________________ (1)See Note 8—Employee Benefits for additional information on our net periodic benefit income related to our pension and post-retirement plans.

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