POSTRETIREMENT BENEFIT PLANS - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2024	Mar. 26, 2023
Defined Benefit Plan Disclosure [Line Items]
Credit (cost) recognition of previously deferred postretirement benefit plan amounts, before tax	$ 24,000,000	$ (47,000,000)
Amortization of actuarial gains (losses), net of tax	19,000,000	(37,000,000)
Material contributions to qualified defined benefit pension plans	0	0
Retiree medical and life insurance plans
Defined Benefit Plan Disclosure [Line Items]
Credit (cost) recognition of previously deferred postretirement benefit plan amounts, before tax	$ 4,000,000	$ 3,000,000