Fair Value Measurements - Summary of Designated Derivatives (Details) - Cash Flow Hedging - Designated as Hedging Instrument - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2017	Jan. 01, 2017
Summary of designated derivatives
Gain/(Loss) Recognized In Accumulated OCI(1)	$ (4)	$ (359)
Gain/(Loss) Reclassified From Accumulated OCI Into Income(1)	(359)	(110)
Gain/(Loss) Recognized In Other Income/Expense(2)	(6)	(14)
Foreign exchange contracts \| Sales to customers
Summary of designated derivatives
Gain/(Loss) Recognized In Accumulated OCI(1)	49	(65)
Gain/(Loss) Reclassified From Accumulated OCI Into Income(1)	(31)	(47)
Gain/(Loss) Recognized In Other Income/Expense(2)	(1)	(1)
Foreign exchange contracts \| Cost of products sold
Summary of designated derivatives
Gain/(Loss) Recognized In Accumulated OCI(1)	96	(212)
Gain/(Loss) Reclassified From Accumulated OCI Into Income(1)	(159)	(3)
Gain/(Loss) Recognized In Other Income/Expense(2)	(10)	(15)
Foreign exchange contracts \| Research and development expense
Summary of designated derivatives
Gain/(Loss) Recognized In Accumulated OCI(1)	(199)	(76)
Gain/(Loss) Reclassified From Accumulated OCI Into Income(1)	(165)	(90)
Gain/(Loss) Recognized In Other Income/Expense(2)	5	0
Foreign exchange contracts \| Other Income Expense Net
Summary of designated derivatives
Gain/(Loss) Recognized In Accumulated OCI(1)	(60)	(72)
Gain/(Loss) Reclassified From Accumulated OCI Into Income(1)	(87)	(7)
Gain/(Loss) Recognized In Other Income/Expense(2)	0	2
Cross currency interest rate swaps \| Interest (income)/Interest expense, net
Summary of designated derivatives
Gain/(Loss) Recognized In Accumulated OCI(1)	110	66
Gain/(Loss) Reclassified From Accumulated OCI Into Income(1)	83	37
Gain/(Loss) Recognized In Other Income/Expense(2)	$ 0	$ 0

Derivative instruments gain loss on statement of financial performance.

No definition available.

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- Definition

The effective portion of net gain (loss) reclassified from accumulated other comprehensive income into income on derivative instruments designated and qualifying as hedging instruments.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4D
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624177-113959

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- Definition

The effective portion of gains and losses (net) on derivative instruments designated and qualifying as hedging instruments that was recognized in other comprehensive income during the current period.

+ References

+ Details

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- Definition

Amount of gain (loss) from the ineffectiveness of the hedge.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4C
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 815
-SubTopic 25
-Section 50
-Paragraph 1
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=6886632&loc=d3e76258-113986

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