Derivative Instruments and Hedging Activities - Effect of Derivative Instruments in Cash Flow Hedging Relationships on Income and Accumulated Other Comprehensive Loss (AOCL) (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Reclassified from Accumulated OCL into Income	$ 163	$ 66
Foreign exchange contracts
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Reclassified from Accumulated OCL into Income	50	36	(8)
Gain (Loss) Recognized in OCL	49	92	(79)
Foreign exchange contracts | Cost of revenue
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Reclassified from Accumulated OCL into Income	58	49	(25)
Foreign exchange contracts | Research & engineering
Derivative Instruments Gain Loss [Line Items]
Gain (Loss) Reclassified from Accumulated OCL into Income	$ (8)	$ (13)	$ 17