Acquisition, Divestiture, Collaborative Arrangement and Equity-Method Investments - Discontinued Operations - Net of Tax (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
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Revenues	$ 0		$ 1,112		$ 0		$ 2,201
Pre-tax income from discontinued operations	(3)		189		2		389
Provision for taxes on income(a)	(1)	[1]	48	[1]	(1)	[1]	99	[1]
Income from discontinued operations––net of tax	(2)		141		3		290
Pre-tax gain on disposal of discontinued operations(b)	2	[2]	10,539	[2]	66	[2]	10,539	[2]
Provision for taxes on income(b), (c)	0	[2],[3]	121	[2],[3]	(4)	[2],[3]	121	[2],[3]
Gain on disposal of discontinued operations––net of tax(b)	2	[2]	10,418	[2]	70	[2]	10,418	[2]
Discontinued operations––net of tax	0		10,559		73		10,708
Deferred tax expense (benefit)					853		1,254
Discontinued Operations [Member]
Disposal Group, Including Discontinued Operation, Income Statement Disclosures [Abstract]
Deferred tax expense (benefit)	$ 2		$ 26		$ 2		$ 19

[1] Includes deferred tax benefits of $2 million and $26 million for the three months ended June 29, 2014 and June 30, 2013, respectively, and deferred tax benefits of $2 million and $19 million for the six months ended June 29, 2014 and June 30, 2013, respectively.

[2] For the three and six months ended June 29, 2014, represents post-close adjustments.

[3] Reflects income taxes resulting from certain legal entity reorganizations.