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Revenue (Tables)

12 Months Ended

Jan. 02, 2026

Revenue from Contract with Customer [Abstract]

Schedule of Disaggregation of Revenue

Revenue by business unit and reportable segment was as follows:

									Year ended
Dollars in millions															January 2, 2026						January 3, 2025						December 29, 2023
Mission Technology Solutions
Science & Space															$	1,126					$	1,188					$	1,127
Defense & Intel															3,178						2,887						2,497
Readiness & Sustainment															1,277						1,480						1,495
Total Mission Technology Solutions															$	5,581					$	5,555					$	5,119
Sustainable Technology Solutions															$	2,205					$	2,155					$	1,837
Total revenue															$	7,786					$	7,710					$	6,956

Revenue by customer type was as follows:

									Year ended
															January 2, 2026																		January 3, 2025																		December 29, 2023
Dollars in millions																																							MTS						STS						Total						MTS						STS						Total						MTS						STS						Total
U.S. Government Defense and Intelligence Clients																																							$	3,370					$	—					$	3,370					$	3,292					$	—					$	3,292					$	3,039					$	—					$	3,039
U.S. Government Federal Civilian Clients																																							1,057						—						1,057						1,112						—						1,112						1,052						—						1,052
International Government Clients																																							905						—						905						891						—						891						791						—						791
Commercial and Infrastructure Clients																																							249						2,205						2,454						260						2,155						2,415						237						1,837						2,074
Total revenue																																							$	5,581					$	2,205					$	7,786					$	5,555					$	2,155					$	7,710					$	5,119					$	1,837					$	6,956

Revenue by geographic destination was as follows:

			Year ended
Dollars in millions			January 2, 2026																		January 3, 2025																		December 29, 2023
Total by Countries/Regions			MTS						STS						Total						MTS						STS						Total						MTS						STS						Total
United States			$	3,772					$	472					$	4,244					$	3,503					$	542					$	4,045					$	3,096					$	521					$	3,617
Europe			1,313						271						1,584						1,595						299						1,894						1,569						247						1,816
Middle East			123						667						790						110						621						731						105						423						528
Australia			219						329						548						202						324						526						204						292						496
Africa			77						176						253						70						131						201						70						106						176
Asia			20						122						142						18						134						152						17						152						169
Other countries			57						168						225						57						104						161						58						96						154
Total revenue			$	5,581					$	2,205					$	7,786					$	5,555					$	2,155					$	7,710					$	5,119					$	1,837					$	6,956

Revenue by contract type was as follows:    

															Year ended January 2, 2026																		Year ended January 3, 2025																		Year ended December 29, 2023
Dollars in millions																																							MTS						STS						Total						MTS						STS						Total						MTS						STS						Total
Cost-Reimbursable																																							$	3,305					$	—					$	3,305					$	3,507					$	—					$	3,507					$	3,287					$	—					$	3,287
Time-and-Materials																																							938						1,373						2,311						892						1,362						2,254						846						1,166						2,012
Fixed Price																																							1,338						832						2,170						1,156						793						1,949						986						671						1,657
Total revenue																																							$	5,581					$	2,205					$	7,786					$	5,555					$	2,155					$	7,710					$	5,119					$	1,837					$	6,956

Schedule of Accounts Receivable

Dollars in millions			January 2, 2026						January 3, 2025
Unbilled			$	520					$	525
Trade & other			566						541
Accounts receivable, net			$	1,086					$	1,066

X

- Definition

Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 606
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479806/606-10-50-5

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X

- Definition

Tabular disclosure of the various types of trade accounts and notes receivable and for each the gross carrying value, allowance, and net carrying value as of the balance sheet date. Presentation is categorized by current, noncurrent and unclassified receivables.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(4))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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-Topic 210
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(3))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1

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