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Other Financial Data - Other Assets (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | --- | ---
Other Assets: |  |  |
Defined benefit plan assets | $ 162 | $ 98 |
Non-current contract cost assets | 141 | 119 | $ 130
Other | 72 | 57 |
Other assets | $ 375 | $ 274 |

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