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Income Taxes - Components of Federal and Foreign Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Dec. 31, 2023
--- | --- | ---
Deferred tax assets related to: |  |
Pensions | $ 1,184 | $ 1,485
Accrued compensation and benefits | 741 | 731
Contract accounting methods | 949 | 508
Research and development expenditures | 1,643 | 1,251
Domestic company operating losses | 83 | 0
Foreign company operating losses and credits | 6 | 19
Other | 522 | 487
Valuation allowance | (41) | (32)
Deferred tax assets, net | 5,087 | 4,449
Deferred tax liabilities related to: |  |
Goodwill and intangible assets | 545 | 494
Property, plant and equipment | 371 | 415
Other | 638 | 597
Deferred tax liabilities | 1,554 | 1,506
Net deferred tax assets | $ 3,533 | $ 2,943

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