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Share Repurchase Transactions and Other Comprehensive Loss (Tables) | 3 Months Ended
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Mar. 31, 2024
Equity [Abstract] |
Components of Accumulated Other Comprehensive Loss | The components of accumulated other comprehensive loss are as follows (dollars in millions):
| Unrealized Gains (Losses) on Available- for-Sale Securities |  |  | Foreign Currency Translation Adjustments |  |  | Defined Benefit Plans |  |  | Total |
Balances at December 31, 2023 | $ | (22 | ) |  | $ | (339 | ) |  | $ | (64 | ) |  | $ | (425 | )
Unrealized losses on available-for-sale securities, net of $1 income tax benefit |  | (1 | ) |  |  |  |  |  |  |  |  | (1 | )
Foreign currency translation adjustments, net of $1 income tax benefit |  |  |  |  | (7 | ) |  |  |  |  |  | (7 | )
Balances at March 31, 2024 | $ | (23 | ) |  | $ | (346 | ) |  | $ | (64 | ) |  | $ | (433 | )

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