Retirement Plans (Tables)

9 Months Ended

Sep. 29, 2018

Retirement Plans

Components of net periodic benefit cost

	Three Months Ended				Nine Months Ended
(In millions)		September 29, 2018		September 30, 2017		September 29, 2018		September 30, 2017
Pension Benefits
Service cost	$	26	$	25	$	79	$	75
Interest cost		77		81		230		242
Expected return on plan assets		(138)		(127)		(415)		(380)
Amortization of net actuarial loss		38		34		115		102
Amortization of prior service cost		4		4		11		12
Net periodic benefit cost	$	7	$	17	$	20	$	51
Postretirement Benefits Other Than Pensions
Service cost	$	1	$	1	$	2	$	2
Interest cost		2		3		7		9
Amortization of prior service credit		(2)		(2)		(5)		(6)
Net periodic benefit cost	$	1	$	2	$	4	$	5