Financial Instruments by Balance Sheet Grouping (Detail) (USD $) In Millions, unless otherwise specified	Sep. 29, 2013		Dec. 31, 2012
Assets
Cash and cash equivalents	$ 925		$ 947
Short-term investments	31,627		22,318
Long-term investments	15,731		14,149
Taxes and other current assets(a)	200	[1]	296	[1]
Taxes and other noncurrent assets(b)	962	[2]	1,086	[2]
Total	49,445		38,796
Liabilities
Short-term borrowings, including current portion of long-term debt	4,738	[3],[4]	6,424	[3],[4]
Other current liabilities(c)	222	[5]	330	[5]
Long-term debt	31,812	[3],[6]	31,036	[3],[6]
Other noncurrent liabilities(d)	374	[7]	374	[7]
Total selected financial liabilities	$ 37,146	[3]	$ 38,164	[3]

[1] As of September 29, 2013, derivative instruments at fair value include interest rate swaps ($35 million), foreign currency swaps ($22 million) and foreign currency forward-exchange contracts ($143 million) and, as of December 31, 2012, include foreign currency swaps ($144 million) and foreign currency forward-exchange contracts ($152 million).

[2] As of September 29, 2013, derivative instruments at fair value include interest rate swaps ($460 million) and foreign currency swaps ($502 million) and, as of December 31, 2012, include interest rate swaps ($1.0 billion) and foreign currency swaps ($50 million).

[3] Some carrying amounts include adjustments for discount or premium amortization or for the effect of interest rate swaps designated as hedges.

[4] The differences between the estimated fair values and carrying values of held-to-maturity debt securities, private equity securities at cost and short-term borrowings not measured at fair value on a recurring basis were not significant as of September 29, 2013 or December 31, 2012. The fair value measurements of our held-to-maturity debt securities and our short-term borrowings are based on Level 2 inputs, using a market approach. The fair value measurements of our private equity securities at cost are based on Level 3 inputs, using a market approach.

[5] As of September 29, 2013, derivative instruments at fair value include foreign currency swaps ($14 million) and foreign currency forward-exchange contracts ($208 million) and, as of December 31, 2012, include foreign currency swaps ($87 million) and foreign currency forward-exchange contracts ($243 million).

[6] Includes foreign currency debt with fair values of $697 million as of September 29, 2013 and $809 million as of December 31, 2012, which are used as hedging instruments.

[7] As of September 29, 2013, derivative instruments at fair value include interest rate swaps ($200 million) and foreign currency swaps ($174 million) and, as of December 31, 2012, include interest rate swaps ($33 million) and foreign currency swaps ($341 million).