Employee Benefits (Tables)

6 Months Ended

Jul. 01, 2017

Compensation and Retirement Disclosure [Abstract]

Components of Plan Benefit Expense

Pension

	Quarter ended						Year-to-date period ended
(millions)	July 1, 2017			July 2, 2016			July 1, 2017			July 2, 2016
Service cost	$	25		$	25		$	50		$	49
Interest cost	42			44			83			88
Expected return on plan assets	(90		)	(90		)	(180		)	(179		)
Amortization of unrecognized prior service cost	2			4			4			7
Recognized net (gain) loss	(2		)	—			1			—
Curtailment (gain) loss	(3		)	—			(2		)	—
Total pension (income) expense	$	(26	)	$	(17	)	$	(44	)	$	(35	)

Other nonpension postretirement

	Quarter ended						Year-to-date period ended
(millions)	July 1, 2017			July 2, 2016			July 1, 2017			July 2, 2016
Service cost	$	4		$	5		$	9		$	10
Interest cost	9			9			18			19
Expected return on plan assets	(25		)	(23		)	(49		)	(45		)
Amortization of unrecognized prior service (gain)	(2		)	(2		)	(4		)	(5		)
Recognized net (gain) loss	—			—			(29		)	—
Curtailment loss	—			—			3			—
Total postretirement benefit (income) expense	$	(14	)	$	(11	)	$	(52	)	$	(21	)

Postemployment

	Quarter ended				Year-to-date period ended
(millions)	July 1, 2017		July 2, 2016		July 1, 2017		July 2, 2016
Service cost	$	2	$	2	$	3	$	4
Interest cost	1		1		2		2
Recognized net loss	—		1		1		2
Total postemployment benefit expense	$	3	$	4	$	6	$	8

Contributions to Employee Benefit Plans

(millions)	Pension		Nonpension postretirement		Total
Quarter ended:
July 1, 2017	$	2	$	2	$	4
July 2, 2016	$	2	$	4	$	6
Year-to-date period ended:
July 1, 2017	$	23	$	5	$	28
July 2, 2016	$	15	$	8	$	23
Full year:
Fiscal year 2017 (projected)	$	26	$	16	$	42
Fiscal year 2016 (actual)	$	18	$	15	$	33