RETIREMENT BENEFITS (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 29, 2024	Mar. 31, 2023
Pension
Operating
Service cost	$ 8	$ 6
Non-operating
Interest cost	99	92
Expected return on plan assets	(165)	(153)
Amortization of net actuarial gain	(1)	(2)
Amortization of prior service credit	(7)	(7)
Non-service cost periodic benefit income	(74)	(70)
Net periodic benefit income	(66)	(64)
Other Benefits
Operating
Service cost	0	0
Non-operating
Interest cost	3	3
Expected return on plan assets	(5)	(5)
Amortization of net actuarial gain	(4)	(5)
Amortization of prior service credit	0	0
Non-service cost periodic benefit income	(6)	(7)
Net periodic benefit income	$ (6)	$ (7)