POSTRETIREMENT BENEFIT PLANS - Income Statement Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Oct. 01, 2021	Sep. 30, 2022	Oct. 01, 2021
Pension
Operating
Service cost	$ 10	$ 16	$ 32	$ 52
Non-operating
Interest cost	55	47	165	139
Expected return on plan assets	(156)	(155)	(468)	(467)
Amortization of net actuarial loss (gain)	2	7	7	26
Amortization of prior service (credit) cost	(7)	(7)	(21)	(21)
Effect of curtailments or settlements		7		4
Non-service cost periodic benefit income	(106)	(101)	(317)	(319)
Net periodic benefit income	(96)	(85)	(285)	(267)
Other Benefits
Operating
Service cost	1	1	2	2
Non-operating
Interest cost	1	1	5	4
Expected return on plan assets	(5)	(5)	(16)	(15)
Amortization of net actuarial loss (gain)	(1)	0	(5)	0
Amortization of prior service (credit) cost	0	1	1	1
Effect of curtailments or settlements		0		0
Non-service cost periodic benefit income	(5)	(3)	(15)	(10)
Net periodic benefit income	$ (4)	$ (2)	$ (13)	$ (8)