SIGNIFICANT ACCOUNTING POLICIES - FAS/CAS Operating Adjustments (Details) - USD ($) $ in Millions	12 Months Ended
	Jan. 03, 2025	Dec. 29, 2023	Dec. 30, 2022
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
FAS pension service cost	$ (36)	$ (35)
Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
FAS pension service cost	(34)	(33)	$ (44)
Plans Under US Government Contracts | Pension Plan
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]
FAS pension service cost	(36)	(35)	(46)
Less: CAS pension cost	(64)	(145)	(141)
FAS/CAS operating adjustment	$ 28	$ 110	$ 95