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Other Financial Data - Other Assets (Details) - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | ---
Other Assets: |  |  |
Defined benefit plan assets (Note 8) | $ 164 | $ 365 |
Non-current contract cost assets (Note 2) | 130 | 124 | $ 105
Other | 16 | 69 |
Other assets | $ 310 | $ 558 |

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