Employee Benefits (Tables)

3 Months Ended

Mar. 30, 2019

Retirement Benefits [Abstract]

Components of Plan Benefit Expense

Pension

	Quarter ended
(millions)	March 30, 2019			March 31, 2018
Service cost	$	9		$	22
Interest cost	45			42
Expected return on plan assets	(85		)	(92		)
Amortization of unrecognized prior service cost	2			2
Recognized net (gain) loss	1			(9		)
Total pension (income) expense	$	(28	)	$	(35	)

Other nonpension postretirement

	Quarter ended
(millions)	March 30, 2019			March 31, 2018
Service cost	$	3		$	5
Interest cost	10			9
Expected return on plan assets	(21		)	(24		)
Amortization of unrecognized prior service (gain)	(2		)	(2		)
Total postretirement benefit (income) expense	$	(10	)	$	(12	)

Postemployment

	Quarter ended
(millions)	March 30, 2019			March 31, 2018
Service cost	$	1		$	1
Interest cost	—			—
Recognized net (gain) loss	(1		)	(1		)
Total postemployment benefit expense	$	—		$	—

Contributions to Employee Benefit Plans

(millions)	Pension		Nonpension postretirement		Total
Quarter ended:
March 30, 2019	$	1	$	4	$	5
March 31, 2018	$	15	$	4	$	19
Full year:
Fiscal year 2019 (projected)	$	7	$	18	$	25
Fiscal year 2018 (actual)	$	270	$	17	$	287