INFORMATION ON BUSINESS SEGMENTS - FAS/CAS Pension Adjustment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 27, 2022	Mar. 28, 2021
Segment Reporting Information [Line Items]
Non-service FAS pension income	$ 140	$ 93
Total FAS/CAS pension adjustment	566	582
Unallocated items
Segment Reporting Information [Line Items]
Less: CAS pension cost	450	516
FAS pension service cost	(24)	(27)
FAS/CAS pension operating adjustment	426	489
Qualified defined benefit pension plans
Segment Reporting Information [Line Items]
Total FAS pension income	(116)	(66)
FAS pension service cost	(24)	(27)
Qualified defined benefit pension plans | Qualified Plan
Segment Reporting Information [Line Items]
Total FAS pension income	$ 116	$ 66