Accumulated Other Comprehensive Loss, Excluding Noncontrolling Interests (Detail) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jul. 01, 2012
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, December 31, 2011	$ (4,129)
Other comprehensive income/(loss)	(1,879)	[1]
Balance, July 1, 2012	(6,008)
Net Unrealized Gain/(Losses) [Member] | Currency Translation Adjustment And Other [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, December 31, 2011	944
Other comprehensive income/(loss)	(1,737)	[1]
Balance, July 1, 2012	(793)
Net Unrealized Gain/(Losses) [Member] | Derivative Financial Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, December 31, 2011	(361)
Other comprehensive income/(loss)	(64)	[1]
Balance, July 1, 2012	(425)
Net Unrealized Gain/(Losses) [Member] | Available For-Sale Securities [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, December 31, 2011	46
Other comprehensive income/(loss)	107	[1]
Balance, July 1, 2012	153
Benefit Plans [Member] | Actuarial Gains/(Losses) [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, December 31, 2011	(5,120)
Other comprehensive income/(loss)	(131)	[1]
Balance, July 1, 2012	(5,251)
Benefit Plans [Member] | Prior Service (Costs)/ Credits And Other [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance, December 31, 2011	362
Other comprehensive income/(loss)	(54)	[1]
Balance, July 1, 2012	$ 308

[1] Amounts do not include foreign currency translation adjustments attributable to noncontrolling interests of $18 million loss for the first six month of 2012.