Pension and Postretirement Benefit Plans - Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017		Oct. 02, 2016
Pension Plan [Member] | U.S. [Member] | Qualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 67	$ 69	$ 202	[1]	$ 193	[1]
Interest cost	157	218	478	[1]	486	[1]
Expected return on plan assets	(248)	(239)	(759)	[1]	(721)	[1]
Amortization of:
Actuarial losses	91	99	302	[1]	297	[1]
Prior service costs (credits)	0	1	3	[1]	4	[1]
Curtailments	1	2	10	[1]	5	[1]
Settlements	30	21	54	[1]	52	[1]
Defined benefit plan, net periodic benefit cost	99	170	292	[1]	316	[1]
Pension Plan [Member] | International [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	44	41	127		126
Interest cost	52	58	152		178
Expected return on plan assets	(87)	(95)	(256)		(291)
Amortization of:
Actuarial losses	29	23	86		70
Prior service costs (credits)	(1)	(1)	(3)		(2)
Curtailments	(2)	0	(2)		(1)
Settlements	0	1	3		2
Defined benefit plan, net periodic benefit cost	35	27	106		81
Supplemental Employee Retirement Plan [Member] | U.S. [Member] | Non-Qualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	6	5	18		14
Interest cost	13	18	41		40
Expected return on plan assets	0	0	0		0
Amortization of:
Actuarial losses	12	9	37		27
Prior service costs (credits)	0	0	(1)		(1)
Curtailments	0	1	0		1
Settlements	7	7	32		23
Defined benefit plan, net periodic benefit cost	39	39	127		105
Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	10	11	32		31
Interest cost	23	33	68		77
Expected return on plan assets	(9)	(8)	(27)		(25)
Amortization of:
Actuarial losses	8	9	23		23
Prior service costs (credits)	(45)	(45)	(137)		(127)
Curtailments	(3)	(8)	(15)		(14)
Settlements	0	0	0		0
Defined benefit plan, net periodic benefit cost	$ (17)	$ (9)	$ (57)		$ (36)

[1] In April 2017, we settled the remaining obligation associated with the Hospira U.S. qualified defined benefit pension plan. We purchased a group annuity contract on behalf of the remaining plan participants with a third-party insurance provider. As a result, we were relieved of the $156 million net pension benefit obligation and recorded a pretax settlement gain of $41 million, partially offset by the recognition of actuarial losses and prior service costs upon plan settlement of approximately $30 million in Restructuring charges and certain acquisition-related costs during the second quarter of 2017 (see Note 3).