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

Contract Assets

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Information About Contract Liabilities

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Work in Progress, Contract Services

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time.

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time, classified as current.

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Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due.

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- Definition

Amount of billed or unbilled claims or other similar items subject to uncertainty concerning their determination or ultimate realization under long-term contracts.

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Amount of cost incurred on construction contract for unapproved change order, claim, or similar item subject to uncertainty.

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