Tax Matters (Detail) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Oct. 01, 2017	Oct. 02, 2016	Oct. 01, 2017	Oct. 02, 2016
Income Tax Disclosure [Abstract]
Foreign currency translation adjustments, net	[1]	$ (62)	$ 0	$ (192)	$ (15)
Unrealized holding losses on derivative financial instruments, net		28	0	30	(192)
Reclassification adjustments for realized (gains)/losses		(29)	32	(169)	81
Derivatives qualifying as hedges, tax, total		(1)	32	(139)	(112)
Unrealized holding gains on available-for-sale securities, net		37	40	93	106
Reclassification adjustments for realized gains		(49)	(14)	(45)	(16)
Available-for-sale securities, tax, total		(12)	26	47	90
Benefit plans: actuarial losses, net		(37)	(31)	(15)	(39)
Reclassification adjustments related to amortization		60	47	152	140
Reclassification adjustments related to settlements, net		22	10	30	27
Other		(33)	14	(46)	5
Defined benefit plans, actuarial gain (loss), tax, total		11	40	121	133
Benefit plans: prior service (costs)/credits and other, net		0	35	0	66
Reclassification adjustments related to amortization		(17)	(17)	(50)	(47)
Reclassification adjustments related to curtailments, net		(1)	(3)	(5)	(5)
Other		1	2	1	1
Pension and other postretirement benefit plans, net prior service cost (credit), tax		(17)	18	(55)	15
Tax provision/(benefit) on other comprehensive income	[2],[3]	$ (80)	$ 116	$ (218)	$ 111

[1] Taxes are not provided for foreign currency translation adjustments relating to investments in international subsidiaries that will be held indefinitely.

[2] Amounts may not add due to rounding.

[3] See Note 5C. Tax Matters: Tax Provision/(Benefit) on Other Comprehensive Income.