POSTRETIREMENT BENEFIT PLANS - Schedule of Pretax Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 26, 2023	Mar. 27, 2022
Qualified defined benefit pension plans
Operating:
Service cost	$ (16)	$ (24)
Non-operating:
Interest cost	(365)	(302)
Expected return on plan assets	430	502
Recognized net actuarial losses	(42)	(150)
Amortization of prior service credits	87	90
Non-service FAS pension income	110	140
Total FAS pension income	94	116
Retiree medical and life insurance plans
Operating:
Service cost	(1)	(2)
Non-operating:
Interest cost	(17)	(12)
Expected return on plan assets	26	34
Recognized net actuarial losses	8	11
Amortization of prior service credits	(3)	(7)
Non-service FAS pension income	14	26
Total FAS pension income	$ 13	$ 24