Employee Benefits (Tables)

6 Months Ended

Jun. 29, 2019

Retirement Benefits [Abstract]

Components of Plan Benefit Expense

Pension

	Quarter ended						Year-to-date period ended
(millions)	June 29, 2019			June 30, 2018			June 29, 2019			June 30, 2018
Service cost	$	9		$	22		$	18		$	44
Interest cost	44			41			89			83
Expected return on plan assets	(83		)	(90		)	(168		)	(182		)
Amortization of unrecognized prior service cost	2			2			4			4
Recognized net (gain) loss	10			(2		)	11			(11		)
Net periodic benefit cost	$	(18	)	$	(27	)	$	(46	)	$	(62	)

Other nonpension postretirement

	Quarter ended						Year-to-date period ended
(millions)	June 29, 2019			June 30, 2018			June 29, 2019			June 30, 2018
Service cost	$	4		$	4		$	7		$	9
Interest cost	10			9			20			18
Expected return on plan assets	(21		)	(23		)	(42		)	(47		)
Amortization of unrecognized prior service (gain)	(2		)	(2		)	(4		)	(4		)
Total postretirement benefit (income) expense	$	(9	)	$	(12	)	$	(19	)	$	(24	)

Postemployment

	Quarter ended						Year-to-date period ended
(millions)	June 29, 2019			June 30, 2018			June 29, 2019			June 30, 2018
Service cost	$	1		$	1		$	2		$	2
Interest cost	1			—			1			—
Recognized net (gain) loss	(1		)	(1		)	(2		)	(2		)
Total postemployment benefit expense	$	1		$	—		$	1		$	—

Contributions to Employee Benefit Plans

Company contributions to employee benefit plans are summarized as follows:

(millions)	Pension		Nonpension postretirement		Total
Quarter ended:
June 29, 2019	$	3	$	4	$	7
June 30, 2018	$	251	$	4	$	255
Year-to-date period ended:
June 29, 2019	$	4	$	8	$	12
June 30, 2018	$	266	$	8	$	274
Full year:
Fiscal year 2019 (projected)	$	7	$	18	$	25
Fiscal year 2018 (actual)	$	270	$	17	$	287