SIGNIFICANT ACCOUNTING POLICIES - Net Estimated at Completion ("EAC") Adjustments (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		12 Months Ended
	Jan. 02, 2026	Jan. 03, 2025	Jan. 02, 2026	Jan. 03, 2025	Dec. 29, 2023
Change in Accounting Estimate [Line Items]
Revenue			$ 212	$ 210	$ 118
Operating income	$ 2,110	$ 1,918	2,110	1,918	1,426
Contracts Accounted for under Percentage of Completion
Change in Accounting Estimate [Line Items]
Operating income			47	39	(85)
Net income			$ 35	$ 29	$ (63)
Diluted EPS (in dollars per share)			$ 0.19	$ 0.15	$ (0.33)