Pension and Postretirement Benefit Plans - Narrative (Detail) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 29, 2013
U.S. Qualified Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions	$ 5
Expected contributions in next fiscal year	5
U.S. Supplemental (Non-Qualified) Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions	146
Expected contributions in next fiscal year	177
International Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions	246
Expected contributions in next fiscal year	346
Postretirement Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Contributions	178
Expected contributions in next fiscal year	$ 238