Pension and Postretirement Benefit Plans - Net Periodic Benefit Cost (Detail) $ in Millions		3 Months Ended
		Apr. 01, 2018 USD ($)	Apr. 02, 2017 USD ($)	Jan. 01, 2018 pension_plan
Amortization of:
Number of pension plans frozen | pension_plan				2
Pension Plan [Member] | U.S. [Member] | Qualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[1],[2]	$ 0	$ 68
Interest cost	[2]	151	162
Expected return on plan assets	[2]	(263)	(259)
Amortization of:
Actuarial losses	[1]	30	115
Prior service costs (credits)	[2]	0	2
Curtailments	[2]	2	5
Settlements	[2]	20	31
Defined benefit plan, net periodic benefit cost	[2]	(58)	124
Pension Plan [Member] | International [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[1],[2]	37	41
Interest cost	[2]	54	50
Expected return on plan assets	[2]	(92)	(84)
Amortization of:
Actuarial losses	[1]	26	28
Prior service costs (credits)	[2]	(1)	(1)
Curtailments	[2]	0	0
Settlements	[2]	0	1
Defined benefit plan, net periodic benefit cost	[2]	24	35
Supplemental Employee Retirement Plan [Member] | U.S. [Member] | Non-Qualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[1],[2]	0	6
Interest cost	[2]	13	14
Expected return on plan assets	[2]	0	0
Amortization of:
Actuarial losses	[1]	4	13
Prior service costs (credits)	[2]	0	0
Curtailments	[2]	0	0
Settlements	[2]	17	21
Defined benefit plan, net periodic benefit cost	[2]	33	53
Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	[1],[2]	10	11
Interest cost	[2]	18	23
Expected return on plan assets	[2]	(9)	(9)
Amortization of:
Actuarial losses	[1]	2	8
Prior service costs (credits)	[2]	(45)	(46)
Curtailments	[2]	(7)	(7)
Settlements	[2]	0	0
Defined benefit plan, net periodic benefit cost	[2]	$ (31)	$ (21)

[1] 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.

[2] 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.