POSTRETIREMENT BENEFIT PLANS (Tables)

3 Months Ended

Mar. 28, 2021

Retirement Benefits [Abstract]

Schedule of Pretax Net Periodic Benefit Cost

Our pretax net periodic benefit income related to our qualified defined benefit pension plans and retiree medical and life insurance plans consisted of the following (in millions):

	Quarters Ended
	March 28, 2021		March 29, 2020
Qualified defined benefit pension plans
Service cost	$	27	$	25
Interest cost	311		385
Expected return on plan assets	(569)		(566)
Recognized net actuarial losses	252		212
Amortization of prior service credits	(87)		(86)
Total net periodic benefit income	$	(66)	$	(30)
Retiree medical and life insurance plans
Service cost	$	3	$	3
Interest cost	13		18
Expected return on plan assets	(35)		(32)
Recognized net actuarial losses	—		(1)
Amortization of prior service costs	9		10
Total net periodic benefit income	$	(10)	$	(2)