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Acquisitions, Goodwill and Intangible Assets (Narrative) (Details) - USD ($)			3 Months Ended
	Mar. 27, 2026	May 23, 2025	Apr. 03, 2026	Apr. 04, 2025	Jan. 02, 2026	Jan. 03, 2025
Goodwill [Line Items]
Revenues			$ 4,400,000,000	$ 4,245,000,000
Goodwill			8,094,000,000		$ 6,342,000,000	$ 6,084,000,000
Impairment of intangible assets			0	0
Amortization of intangible assets			30,000,000	$ 30,000,000
Intelligence & Digital
Goodwill [Line Items]
Goodwill			2,238,000,000		2,238,000,000	2,007,000,000
Homeland
Goodwill [Line Items]
Goodwill			2,729,000,000		$ 977,000,000	$ 950,000,000
Entrust
Goodwill [Line Items]
Purchase consideration	$ 2,400,000,000
Goodwill recognized as tax deductible			119,000,000
Goodwill			1,748,000,000
Entrust | Homeland
Goodwill [Line Items]
Revenues			11,000,000
Business combination, acquisition-related cost			29,000,000
Kudu Dynamics
Goodwill [Line Items]
Purchase consideration		$ 293,000,000
Cash acquired		29,000,000
Goodwill		$ 231,000,000
Kudu Dynamics | Intelligence & Digital
Goodwill [Line Items]
Revenues			$ 22,000,000

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