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INVESTMENTS - Narrative (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
INVESTMENTS - Narrative (Details) - USD ($) $ in Millions	Oct. 02, 2026	Oct. 03, 2025	Oct. 02, 2026	Oct. 03, 2025	Aug. 03, 2026	Jan. 02, 2026
Schedule of Equity Method Investments [Line Items]
Short-term investments	$ 550		$ 550			$ 0
Equity method investments	377		377			$ 88
Gain (Loss) on investments	37	$ 7	114	$ 11
RocketForce Technologies LLC
Schedule of Equity Method Investments [Line Items]
Equity method investments					$ 248
Equity method investment, noncontrolling interest, percentage					40.00%
Total segment
Schedule of Equity Method Investments [Line Items]
Gain (Loss) on investments	0	$ 0	39	$ 0
Space & Mission Systems \| Total segment
Schedule of Equity Method Investments [Line Items]
Total non-current investments	54		54
CSD \| Total segment
Schedule of Equity Method Investments [Line Items]
Total non-current investments	$ 43		$ 43