Tax Matters (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 29, 2014		Jun. 30, 2013		Jun. 29, 2014		Jun. 30, 2013
Income Tax Disclosure [Abstract]
Foreign currency translation adjustments(a)	$ (3)	[1]	$ 19	[1]	$ (10)	[1]	$ 90	[1]
Unrealized holding gains/(losses) on derivative financial instruments	1		135		(16)		(20)
Reclassification adjustments for realized (gains)/losses	9		(89)		8		78
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax, Total	10		46		(8)		58
Unrealized holding gains/(losses) on available-for-sale securities	(4)		4		23		15
Reclassification adjustments for realized (gains)/losses	(11)		31		(40)		6
Other Comprehensive Income (Loss), Available-for-sale Securities, Tax, Total	(15)		35		(17)		21
Benefit plans: actuarial gains/(losses), net	(3)		5		(2)		11
Reclassification adjustments related to amortization	16		52		32		106
Reclassification adjustments related to settlements, net	7		16		15		36
Other	5		21		(7)		58
Other Comprehensive Income Defined Benefit Plans Actuarial Gain Loss Tax Effect Period Decrease Increase	25		94		38		211
Benefit plans: prior service credits and other	0		2		0		1
Reclassification adjustments related to amortization	(7)		(6)		(14)		(12)
Reclassification adjustments related to curtailments, net	2		(1)		1		(4)
Other	(7)		(2)		(2)		(2)
Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Tax Effect Period Decrease Increase	(12)		(7)		(15)		(17)
Tax provision/(benefit) on other comprehensive income/(loss)	$ 5	[2]	$ 187	[2]	$ (12)	[2]	$ 363	[2]

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

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