Employee Benefits (Tables)

9 Months Ended

Sep. 26, 2020

Retirement Benefits [Abstract]

Components of Plan Benefit Expense

Pension

	Quarter ended				Year-to-date period ended
(millions)	September 26, 2020		September 28, 2019		September 26, 2020		September 28, 2019
Service cost	$	9	$	9	$	27	$	27
Interest cost	31		42		99		131
Expected return on plan assets	(87)		(86)		(257)		(254)
Amortization of unrecognized prior service cost	1		1		5		5
Recognized net (gain) loss	7		23		64		34
Net periodic benefit cost	$	(39)	$	(11)	$	(62)	$	(57)
Curtailment (gain) loss	—		(11)		(7)		(11)
Total pension (income) expense	$	(39)	$	(22)	$	(69)	$	(68)

Other nonpension postretirement

	Quarter ended				Year-to-date period ended
(millions)	September 26, 2020		September 28, 2019		September 26, 2020		September 28, 2019
Service cost	$	2	$	5	$	9	$	12
Interest cost	7		10		23		30
Expected return on plan assets	(24)		(23)		(70)		(65)
Amortization of unrecognized prior service cost	(1)		(2)		(6)		(6)
Recognized net (gain) loss	—		(55)		—		(55)
Net periodic benefit cost	(16)		(65)		(44)		(84)
Curtailment (gain) loss	—		(6)		—		(6)
Total postretirement benefit (income) expense	$	(16)	$	(71)	$	(44)	$	(90)

Postemployment

	Quarter ended				Year-to-date period ended
(millions)	September 26, 2020		September 28, 2019		September 26, 2020		September 28, 2019
Service cost	$	1	$	1	$	3	$	3
Interest cost	1		—		1		1
Recognized net (gain) loss	—		(1)		(2)		(3)
Total postemployment benefit expense	$	2	$	—	$	2	$	1

Contributions to Employee Benefit Plans

Company contributions to employee benefit plans are summarized as follows:

(millions)	Pension		Nonpension postretirement		Total
Quarter ended:
September 26, 2020	$	1	$	6	$	7
September 28, 2019	$	2	$	5	$	7
Year-to-date period ended:
September 26, 2020	$	4	$	15	$	19
September 28, 2019	$	6	$	13	$	19
Full year:
Fiscal year 2020 (projected)	$	7	$	19	$	26
Fiscal year 2019 (actual)	$	10	$	18	$	28