Fair Value Measurements (Details) (Designated as Hedging Instrument, USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 28, 2014		Sep. 29, 2013		Sep. 28, 2014		Sep. 29, 2013
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	$ 14	[1]	$ 41	[1]	$ (139)	[1]	$ 224	[1]
Gain/ (Loss) reclassified from Accumulated OCI into income	49	[1]	44	[1]	176	[1]	53	[1]
Gain/ (Loss) recognized in Other income/expense	(2)	[2]	0	[2]	(4)	[2]	0	[2]
Foreign exchange contracts | Sales to customers
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	(43)	[1],[3]	25	[1],[3]	(73)	[1],[3]	22	[1],[3]
Gain/ (Loss) reclassified from Accumulated OCI into income	(2)	[1],[3]	17	[1],[3]	6	[1],[3]	24	[1],[3]
Gain/ (Loss) recognized in Other income/expense	0	[2],[3]	0	[2],[3]	1	[2],[3]	0	[2],[3]
Foreign exchange contracts | Cost of products sold
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	(37)	[1],[3]	42	[1],[3]	(187)	[1],[3]	220	[1],[3]
Gain/ (Loss) reclassified from Accumulated OCI into income	37	[1],[3]	51	[1],[3]	196	[1],[3]	72	[1],[3]
Gain/ (Loss) recognized in Other income/expense	(2)	[2],[3]	0	[2],[3]	(4)	[2],[3]	4	[2],[3]
Foreign exchange contracts | Research and development expense
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	25	[1],[3]	(20)	[1],[3]	28	[1],[3]	(27)	[1],[3]
Gain/ (Loss) reclassified from Accumulated OCI into income	8	[1],[3]	(14)	[1],[3]	(5)	[1],[3]	(31)	[1],[3]
Gain/ (Loss) recognized in Other income/expense	0	[2],[3]	0	[2],[3]	(1)	[2],[3]	(3)	[2],[3]
Foreign exchange contracts | Other (income)/expense, net
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	58	[1],[3]	(13)	[1],[3]	72	[1],[3]	(6)	[1],[3]
Gain/ (Loss) reclassified from Accumulated OCI into income	12	[1],[3]	(8)	[1],[3]	(9)	[1],[3]	(6)	[1],[3]
Gain/ (Loss) recognized in Other income/expense	0	[2],[3]	0	[2],[3]	0	[2],[3]	(1)	[2],[3]
Cross currency interest rate swaps | Interest (income)/Interest expense, net
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	11	[1],[4]	7	[1],[4]	21	[1],[4]	15	[1],[4]
Gain/ (Loss) reclassified from Accumulated OCI into income	(6)	[1],[4]	(2)	[1],[4]	(12)	[1],[4]	(6)	[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] Forward foreign exchange contracts

[4] Cross currency interest rate swaps