Goodwill and Intangible Assets (Changes in Goodwill by Segment) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
Jul. 03, 2026	Jan. 02, 2026
Goodwill [Roll Forward]
Beginning balance, goodwill	$ 6,342	$ 6,084
Acquisition of a business	1,652	231
Divestiture of a business		(7)
Foreign currency translation adjustments	6	34
Transfers to assets held for sale	(337)
Ending balance, goodwill	7,663	6,342
Intelligence & Digital
Goodwill [Roll Forward]
Beginning balance, goodwill	2,238	2,007
Acquisition of a business	0	231
Divestiture of a business		0
Foreign currency translation adjustments	0	0
Transfers to assets held for sale	0
Ending balance, goodwill	2,238	2,238
Health
Goodwill [Roll Forward]
Beginning balance, goodwill	1,336	1,336
Acquisition of a business	0	0
Divestiture of a business		0
Foreign currency translation adjustments	0	0
Transfers to assets held for sale	0
Ending balance, goodwill	1,336	1,336
Homeland
Goodwill [Roll Forward]
Beginning balance, goodwill	977	950
Acquisition of a business	1,652	0
Divestiture of a business		(7)
Foreign currency translation adjustments	6	34
Transfers to assets held for sale	(337)
Ending balance, goodwill	2,298	977
Accumulated goodwill impairment losses	596
Defense
Goodwill [Roll Forward]
Beginning balance, goodwill	1,791	1,791
Acquisition of a business	0	0
Divestiture of a business		0
Foreign currency translation adjustments	0	0
Transfers to assets held for sale	0
Ending balance, goodwill	$ 1,791	$ 1,791

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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