Contract Assets and Liabilities (Details) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022
Contract assets
Unbilled receivables - reimbursable contracts	$ 866		$ 738
Contract work in progress - lump-sum contracts	197		177
Contract assets	1,063		915
Advance billings deducted from contract assets	239		220
Information about contract liabilities:
Revenue recognized that was included in contract liabilities as of January 1	313	$ 531
Claim revenue for costs	$ 526		$ 498

Contract Assets

No definition available.

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- Definition

The amount of advances that are payments on account of contract assets.

+ References

No definition available.

+ Details

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- Definition

Information About Contract Liabilities

+ References

No definition available.

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- Definition

Work in Progress, Contract Services

+ References

No definition available.

+ Details

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
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-Topic 606
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-Publisher FASB
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-Publisher FASB
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-URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130533-203044

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
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-URI https://asc.fasb.org/extlink&oid=126919976&loc=SL49130531-203044

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- Definition

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.

+ References

+ Details

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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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 910
-SubTopic 10
-Section 50
-Paragraph 4
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-URI https://asc.fasb.org/extlink&oid=126937589&loc=SL119991585-234733

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-Publisher FASB
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