Pension and Postretirement Benefit Plans - Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jul. 01, 2018	Jul. 02, 2017	Jul. 01, 2018	Jul. 02, 2017
Pension Plan [Member] | U.S. [Member] | Qualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[1],[2],[3]	$ 0	$ 67	$ 0	$ 135
Interest cost	[1],[3]	150	159	301	321
Expected return on plan assets	[1],[3]	(261)	(252)	(524)	(511)
Amortization of:
Actuarial losses	[1],[2],[3]	30	97	60	212
Prior service costs (credits)	[1],[3]	0	1	1	3
Curtailments	[1],[3]	7	4	9	9
Settlements	[1],[3]	25	(7)	45	24
Defined benefit plan, net periodic benefit cost	[1],[3]	(49)	69	(107)	193
Pension Plan [Member] | International [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[2],[3]	34	42	71	83
Interest cost	[3]	55	50	109	100
Expected return on plan assets	[3]	(93)	(85)	(185)	(169)
Amortization of:
Actuarial losses	[2],[3]	26	28	52	56
Prior service costs (credits)	[3]	(1)	(1)	(2)	(2)
Curtailments	[3]	0	0	0	0
Settlements	[3]	0	2	0	3
Defined benefit plan, net periodic benefit cost	[3]	21	37	44	71
Supplemental Employee Retirement Plan [Member] | U.S. [Member] | Non-Qualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[2],[3]	0	6	0	12
Interest cost	[3]	14	13	26	28
Expected return on plan assets	[3]	0	0	0	0
Amortization of:
Actuarial losses	[2],[3]	3	12	7	25
Prior service costs (credits)	[3]	0	0	0	0
Curtailments	[3]	0	0	0	0
Settlements	[3]	5	4	21	24
Defined benefit plan, net periodic benefit cost	[3]	21	35	55	88
Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[2],[3]	10	11	20	21
Interest cost	[3]	18	23	36	45
Expected return on plan assets	[3]	(9)	(9)	(18)	(18)
Amortization of:
Actuarial losses	[2],[3]	2	8	4	15
Prior service costs (credits)	[3]	(45)	(46)	(90)	(92)
Curtailments	[3]	(7)	(5)	(14)	(12)
Settlements	[3]	0	0	0	0
Defined benefit plan, net periodic benefit cost	[3]	$ (32)	$ (19)	$ (63)	$ (40)

[1] (a) In the second quarter of 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 pre-tax 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 Other (income)/deductions––net (see Note 3).

[2] Effective January 1, 2018, we froze two significant defined benefit pension plans to future benefit accruals in the U.S. and U.K. and as a result, service costs for those plans are eliminated. In addition, due to the plan freeze, the average amortization period for the U.S. qualified plans and U.S. supplemental (non-qualified) plans was extended to the expected life expectancy of the plan participants, whereas the average amortization period in prior years utilized the expected future service period of plan participants.

[3] We adopted a new accounting standard on January 1, 2018 that requires the net periodic pension and postretirement benefit costs other than service costs be presented in Other (income)/deductions––net on the condensed consolidated statements of income. For additional information, see Note 1B and Note 4.