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Unapproved Change Orders and Claims Against Clients (Tables)

6 Months Ended

Jul. 04, 2025

Contractors [Abstract]

Schedule of Unapproved Change Orders and Claims

The amounts of unapproved change orders and claims against clients included in determining the profit or loss on contracts that has been recorded to date are as follows:

			Six Months Ended
			July 4,						June 28,
Dollars in millions			2025						2024
Amounts included in project estimates-at-completion at beginning of fiscal year			$	104					$	74
Net increase in project estimates			57						41
Approved change orders			(128)						—
Ending balance of amounts included in project estimates-at-completion			$	33					$	115
Amounts recognized over time based on progress			$	31					$	91

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- Definition

This element may be used to capture the disclosure pertaining to an entity's unapproved claims and change orders used in determining the profit or loss on contracts.

+ References

No definition available.

+ Details

Name:	kbr_ScheduleofUnapprovedClaimsandChangeOrdersTableTextBlock
Namespace Prefix:	kbr_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration

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- References

No definition available.

+ Details

Name:	us-gaap_ContractorsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration