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Acquisitions, Goodwill and Intangible Assets (Changes in Goodwill by Segment) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Apr. 04, 2025	Jan. 03, 2025
Goodwill [Roll Forward]
Beginning balance, goodwill	$ 6,084	$ 6,112
Foreign currency translation adjustments	14	(28)
Ending balance, goodwill	6,098	6,084
National Security & Digital
Goodwill [Roll Forward]
Beginning balance, goodwill	2,758	2,758
Foreign currency translation adjustments	0	0
Ending balance, goodwill	2,758	2,758
Health & Civil
Goodwill [Roll Forward]
Beginning balance, goodwill	1,366	1,366
Foreign currency translation adjustments	0	0
Ending balance, goodwill	1,366	1,366
Commercial & International
Goodwill [Roll Forward]
Beginning balance, goodwill	772	800
Foreign currency translation adjustments	14	(28)
Ending balance, goodwill	786	772
Accumulated goodwill impairment losses		596
Defense Systems
Goodwill [Roll Forward]
Beginning balance, goodwill	1,188	1,188
Foreign currency translation adjustments	0	0
Ending balance, goodwill	$ 1,188	$ 1,188

X

- Definition

Amount, after accumulated impairment loss, of asset representing future economic benefit arising from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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Amount of foreign currency translation gain (loss) which increases (decreases) asset representing future economic benefit from other asset acquired in business combination or from joint venture formation or both, that is not individually identified and separately recognized.

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