Retirement Plans

9 Months Ended

Oct. 03, 2020

Retirement Benefits [Abstract]

Retirement Plans

Retirement Plans

We provide defined benefit pension plans and other postretirement benefits to eligible employees.  The components of net periodic benefit cost (credit) for these plans are as follows:

​	Three Months Ended				Nine Months Ended
(In millions)	October 3, 2020		September 28, 2019		October 3, 2020		September 28, 2019
Pension Benefits	​		​		​		​
Service cost	$	27	$	23	$	79	$	68
Interest cost	73		82		220		245
Expected return on plan assets	(144)		(139)		(431)		(417)
Amortization of net actuarial loss	47		26		139		76
Amortization of prior service cost	3		3		9		10
Net periodic benefit cost (credit)	$	6	$	(5)	$	16	$	(18)
Postretirement Benefits Other Than Pensions
Service cost	$	—	$	1	$	2	$	2
Interest cost	2		3		6		8
Amortization of net actuarial loss	(1)		(1)		(1)		(2)
Amortization of prior service credit	(1)		(2)		(4)		(5)
Net periodic benefit cost	$	—	$	1	$	3	$	3