Fair Value Measurements (Details) (Designated as Hedging Instrument [Member], USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Oct. 02, 2011		Sep. 30, 2012		Oct. 02, 2011
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	$ (5)	[1]	$ (117)	[1]	$ (90)	[1]	$ (105)	[1]
Gain/ (Loss) reclassified from Accumulated OCI into income	29	[1]	(67)	[1]	(23)	[1]	(185)	[1]
Gain/ (Loss) recognized in Other income/expense	(1)	[2]	0	[2]	(2)	[2]	1	[2]
Foreign exchange contracts [Member] | Sales to customers [Member]
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	30	[1],[3]	(57)	[1],[3]	16	[1],[3]	(30)	[1],[3]
Gain/ (Loss) reclassified from Accumulated OCI into income	(12)	[1],[3]	4	[1],[3]	(42)	[1],[3]	(6)	[1],[3]
Gain/ (Loss) recognized in Other income/expense	(1)	[2],[3]	1	[2],[3]	(1)	[2],[3]	(1)	[2],[3]
Foreign exchange contracts [Member] | Cost of products sold [Member]
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	(61)	[1],[3]	(58)	[1],[3]	(100)	[1],[3]	34	[1],[3]
Gain/ (Loss) reclassified from Accumulated OCI into income	(19)	[1],[3]	(21)	[1],[3]	(53)	[1],[3]	(127)	[1],[3]
Gain/ (Loss) recognized in Other income/expense	(1)	[2],[3]	(1)	[2],[3]	(1)	[2],[3]	2	[2],[3]
Foreign exchange contracts [Member] | Research and development expense [Member]
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	22	[1],[3]	6	[1],[3]	33	[1],[3]	(2)	[1],[3]
Gain/ (Loss) reclassified from Accumulated OCI into income	43	[1],[3]	(40)	[1],[3]	56	[1],[3]	(21)	[1],[3]
Gain/ (Loss) recognized in Other income/expense	0	[2],[3]	1	[2],[3]	0	[2],[3]	(1)	[2],[3]
Foreign exchange contracts [Member] | Other (income)/expense, net [Member]
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	(24)	[1],[3]	59	[1],[3]	(25)	[1],[3]	0	[1],[3]
Gain/ (Loss) reclassified from Accumulated OCI into income	19	[1],[3]	(4)	[1],[3]	27	[1],[3]	(7)	[1],[3]
Gain/ (Loss) recognized in Other income/expense	1	[2],[3]	(1)	[2],[3]	0	[2],[3]	1	[2],[3]
Cross currency interest rate swaps [Member] | Interest (income)/Interest expense, net [Member]
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	28	[1],[4]	(67)	[1],[4]	(14)	[1],[4]	(107)	[1],[4]
Gain/ (Loss) reclassified from Accumulated OCI into income	(2)	[1],[4]	(6)	[1],[4]	(11)	[1],[4]	(24)	[1],[4]
Gain/ (Loss) recognized in Other income/expense	$ 0	[2],[4]	$ 0	[2],[4]	$ 0	[2],[4]	$ 0	[2],[4]

[1] Effective portion

[2] Ineffective portion

[3] Foreign exchange contracts

[4] Cross currency interest rate swaps