Financial Instruments - Long-Term Debt Outstanding Maturities (Details) (USD $) In Millions, unless otherwise specified	Sep. 29, 2013		Dec. 31, 2012
Debt Instrument [Line Items]
2014	$ 1,259
2015	3,026
2016	4,439
2017	2,653
After 2017	20,435
Total	$ 31,812	[1],[2]	$ 31,036	[1],[2]

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

[2] 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.