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Accumulated Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] | A summary of the changes in each component of Accumulated other comprehensive loss, net of tax for the quarters ended March 31, 2022 and 2021 is provided below:
(dollars in millions) | Foreign Currency Translation |  | Defined Benefit Pension and Postretirement Plans |  | Unrealized Hedging Gains (Losses) |  | Accumulated Other Comprehensive Income (Loss)
Quarter Ended March 31, 2022 |  |  |  |  |  |  |
Balance at December 31, 2021 | $ | 49 |  |  | $ | (1,828) |  |  | $ | (136) |  |  | $ | (1,915) |
Other comprehensive income (loss) before reclassifications, net | (242) |  |  | (11) |  |  | 31 |  |  | (222) |
Amounts reclassified, pre-tax | 2 |  |  | 32 |  |  | 6 |  |  | 40 |
Tax benefit (expense) | (3) |  |  | (4) |  |  | (11) |  |  | (18) |
Balance at March 31, 2022 | $ | (194) |  |  | $ | (1,811) |  |  | $ | (110) |  |  | $ | (2,115) |
(dollars in millions) | Foreign Currency Translation |  | Defined Benefit Pension and Postretirement Plans |  | Unrealized Hedging Gains (Losses) |  | Accumulated Other Comprehensive Income (Loss)
Quarter Ended March 31, 2021 |  |  |  |  |  |  |
Balance at December 31, 2020 | $ | 710 |  |  | $ | (4,483) |  |  | $ | 39 |  |  | $ | (3,734) |
Other comprehensive income (loss) before reclassifications, net | (176) |  |  | (10) |  |  | (46) |  |  | (232) |
Amounts reclassified, pre-tax | — |  |  | 64 |  |  | (14) |  |  | 50 |
Tax benefit (expense) | (5) |  |  | (12) |  |  | 12 |  |  | (5) |
Balance at March 31, 2021 | $ | 529 |  |  | $ | (4,441) |  |  | $ | (9) |  |  | $ | (3,921) |

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