Tax Matters (Detail) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 28, 2020	Jun. 30, 2019	Jun. 28, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Foreign currency translation adjustments, net	[1]	$ 60	$ (17)	$ (192)	$ 10
Unrealized holding gains/(losses) on derivative financial instruments, net		51	(53)	(82)	6
Reclassification adjustments for gains included in net income		(35)	(4)	(20)	(59)
Derivatives qualifying as hedges, tax, total		16	(57)	(102)	(53)
Unrealized holding gains/(losses) on available-for-sale securities, net		5	(1)	(1)	4
Reclassification adjustments for losses included in net income		6	3	7	5
Available-for-sale securities, tax, total		11	2	6	9
Benefit plans: actuarial gains/(losses), net		2	(1)	(19)	(1)
Reclassification adjustments related to amortization		16	15	31	18
Reclassification adjustments related to settlements, net		2	0	12	1
Other		16	8	20	3
Defined benefit plans, actuarial gain (loss), tax, total		35	23	43	21
Reclassification adjustments related to amortization of prior service costs and other, net		(11)	(11)	(21)	(22)
Other		1	0	1	0
Pension and other postretirement benefit plans, net prior service cost (credit), tax		(9)	(11)	(20)	(22)
Tax provision/(benefit) on other comprehensive loss	[2]	$ 113	$ (59)	$ (265)	$ (34)

[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.