Employee Benefits (Tables)

9 Months Ended

Sep. 29, 2018

Retirement Benefits [Abstract]

Components of Plan Benefit Expense

Pension

	Quarter ended						Year-to-date period ended
(millions)	September 29, 2018			September 30, 2017			September 29, 2018			September 30, 2017
Service cost	$	22		$	22		$	66		$	72
Interest cost	41			40			124			123
Expected return on plan assets	(91		)	(97		)	(273		)	(277		)
Amortization of unrecognized prior service cost	2			3			6			7
Recognized net (gain) loss	(36		)	83			(47		)	84
Net periodic benefit cost	(62		)	51			(124		)	9
Curtailment (gain) loss	(30		)	(134		)	(30		)	(136		)
Total pension (income) expense	$	(92	)	$	(83	)	$	(154	)	$	(127	)

Other nonpension postretirement

	Quarter ended						Year-to-date period ended
(millions)	September 29, 2018			September 30, 2017			September 29, 2018			September 30, 2017
Service cost	$	5		$	5		$	14		$	14
Interest cost	10			10			28			28
Expected return on plan assets	(22		)	(24		)	(69		)	(73		)
Amortization of unrecognized prior service (gain)	(3		)	(3		)	(7		)	(7		)
Recognized net (gain) loss	—			—			—			(29		)
Net periodic benefit cost	(10		)	(12		)	(34		)	(67		)
Curtailment loss	—			—			—			3
Total postretirement benefit (income) expense	$	(10	)	$	(12	)	$	(34	)	$	(64	)

Postemployment

	Quarter ended					Year-to-date period ended
(millions)	September 29, 2018			September 30, 2017		September 29, 2018			September 30, 2017
Service cost	$	1		$	1	$	3		$	4
Interest cost	—			—		—			2
Recognized net (gain) loss	(1		)	—		(3		)	1
Total postemployment benefit expense	$	—		$	1	$	—		$	7

Contributions to Employee Benefit Plans

(millions)	Pension		Nonpension postretirement		Total
Quarter ended:
September 29, 2018	$	—	$	5	$	5
September 30, 2017	$	2	$	3	$	5
Year-to-date period ended:
September 29, 2018	$	266	$	13	$	279
September 30, 2017	$	25	$	8	$	33
Full year:
Fiscal year 2018 (projected)	$	274	$	17	$	291
Fiscal year 2017 (actual)	$	31	$	13	$	44