INFORMATION ON BUSINESS SEGMENTS - Schedule of FAS/CAS Pension Adjustment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2026	Mar. 30, 2025
Segment Reporting Information [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	$ (92)	$ (111)
Unallocated items
Segment Reporting Information [Line Items]
Defined Benefit Plan, Net Periodic Benefit Cost (Credit)	(92)	(111)
Less: CAS pension cost	433	392
Total FAS/CAS pension adjustment	341	281
Service cost	(12)	(13)
FAS/CAS pension operating adjustment	421	379
Non-service FAS pension expense	$ (80)	$ (98)