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Contract Assets and Liabilities (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Dec. 31, 2023
Contract assets |  |  |
Unbilled receivables - reimbursable contracts | $ 869 |  | $ 854
Contract work in progress - lump-sum contracts | 133 |  | 137
Contract assets | 1,002 |  | 991
Information about contract liabilities: |  |  |
Revenue recognized that was included in contract liabilities as of January 1 | 278 | $ 313 |
Claim revenue for costs | 475 |  | 531
Construction contract cost, subcontractor | $ 23 |  | $ 24

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