POSTRETIREMENT BENEFIT PLANS - Schedule of Pretax Net Periodic Benefit Cost (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 24, 2023	Sep. 25, 2022	Sep. 24, 2023	Sep. 25, 2022
Non-operating:
Pension settlement charge			$ 0	$ (1,470)
Qualified defined benefit pension plans
Operating:
Service cost	$ (17)	$ (20)	(49)	(68)
Non-operating:
Interest cost	(364)	(342)	(1,094)	(947)
Expected return on plan assets	430	425	1,291	1,430
Amortization of actuarial losses	(42)	(62)	(126)	(363)
Amortization of prior service credits	87	90	261	270
Pension settlement charge	0	0	0	(1,470)
Non-service FAS pension income (expense)	111	111	332	(1,080)
Total FAS pension income (expense)	94	91	283	(1,148)
Retiree medical and life insurance plans
Operating:
Service cost	(1)	(3)	(4)	(7)
Non-operating:
Interest cost	(17)	(12)	(51)	(36)
Expected return on plan assets	25	34	77	102
Amortization of actuarial losses	7	12	23	35
Amortization of prior service credits	(2)	(7)	(7)	(21)
Non-service FAS pension income (expense)	13	27	42	80
Total FAS pension income (expense)	$ 12	$ 24	$ 38	$ 73