Pension and Postretirement Benefit Plans - Net Periodic Benefit Cost (Detail) - USD ($) $ in Millions	3 Months Ended
	Apr. 02, 2017	Apr. 03, 2016
U.S. Qualified [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	$ 68	$ 63
Interest cost	162	134
Expected return on plan assets	(259)	(241)
Amortization of:
Actuarial losses	115	99
Prior service costs (credits)	2	1
Curtailments	5	2
Settlements	31	15
Defined benefit plan, net periodic benefit cost	124	73
U.S. Supplemental (Non-Qualified) [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	6	5
Interest cost	14	12
Expected return on plan assets	0	0
Amortization of:
Actuarial losses	13	9
Prior service costs (credits)	0	0
Curtailments	0	0
Settlements	21	10
Defined benefit plan, net periodic benefit cost	53	35
International [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	41	42
Interest cost	50	60
Expected return on plan assets	(84)	(98)
Amortization of:
Actuarial losses	28	23
Prior service costs (credits)	(1)	0
Curtailments	0	0
Settlements	1	1
Defined benefit plan, net periodic benefit cost	35	27
Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Service cost	11	10
Interest cost	23	22
Expected return on plan assets	(9)	(8)
Amortization of:
Actuarial losses	8	7
Prior service costs (credits)	(46)	(41)
Curtailments	(7)	(6)
Settlements	0	0
Defined benefit plan, net periodic benefit cost	$ (21)	$ (16)