Fair Value Measurements - Summary of Derivative Activity (Details) - Designated as Hedging Instrument - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Oct. 02, 2016	Sep. 27, 2015	Oct. 02, 2016	Sep. 27, 2015
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	[1]	$ 4	$ 160	$ (437)	$ 26
Gain/ (Loss) reclassified from Accumulated OCI into income	[1]	3	(38)	(109)	37
Gain/ (Loss) recognized in Other income/expense	[2]	(4)	(3)	(14)	10
Foreign exchange contracts | Sales to customers
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	[1],[3]	(12)	3	(39)	(52)
Gain/ (Loss) reclassified from Accumulated OCI into income	[1],[3]	(8)	(24)	(29)	(95)
Gain/ (Loss) recognized in Other income/expense	[2],[3]	(1)	(3)	(1)	(5)
Foreign exchange contracts | Cost of products sold
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	[1],[3]	(4)	222	(226)	106
Gain/ (Loss) reclassified from Accumulated OCI into income	[1],[3]	13	(34)	5	82
Gain/ (Loss) recognized in Other income/expense	[2],[3]	(4)	1	(10)	15
Foreign exchange contracts | Research and development expense
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	[1],[3]	(5)	(10)	(100)	(13)
Gain/ (Loss) reclassified from Accumulated OCI into income	[1],[3]	(2)	7	(98)	(2)
Gain/ (Loss) recognized in Other income/expense	[2],[3]	1	0	0	0
Foreign exchange contracts | Other (income) expense, net
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	[1],[3],[4]	(4)	(42)	(110)	27
Gain/ (Loss) reclassified from Accumulated OCI into income	[1],[3],[4]	(12)	12	(14)	54
Gain/ (Loss) recognized in Other income/expense	[2],[3],[4]	0	(1)	(3)	0
Cross currency interest rate swaps | Interest (income)/Interest expense, net
Summary of designated derivatives
Gain/ (Loss) recognized in Accumulated OCI	[1],[5]	29	(13)	38	(42)
Gain/ (Loss) reclassified from Accumulated OCI into income	[1],[5]	12	1	27	(2)
Gain/ (Loss) recognized in Other income/expense	[2],[5]	$ 0	$ 0	$ 0	$ 0

[1] Effective portion

[2] Ineffective portion

[3] Forward foreign exchange contracts

[4] Includes equity collar contracts

[5] Cross currency interest rate swaps