Goodwill and Other Intangible Assets Carrying Amount of Goodwill (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2016	Jan. 02, 2016
Goodwill [Roll Forward]
Goodwill	$ 4,968	$ 4,971
Goodwill Additions	245	81
Goodwill, VIE Deconsolidation		(21)
Goodwill, Currency Translation Adjustments	(47)	(63)
Goodwill	5,166	4,968
U.S. Morning Foods
Goodwill [Roll Forward]
Goodwill	131	131
Goodwill Additions	0	0
Goodwill, VIE Deconsolidation		0
Goodwill, Currency Translation Adjustments	0	0
Goodwill	131	131
U.S. Snacks
Goodwill [Roll Forward]
Goodwill	3,568	3,589
Goodwill Additions	0	0
Goodwill, VIE Deconsolidation		(21)
Goodwill, Currency Translation Adjustments	0	0
Goodwill	3,568	3,568
U.S. Specialty
Goodwill [Roll Forward]
Goodwill	82	82
Goodwill Additions	0	0
Goodwill, VIE Deconsolidation		0
Goodwill, Currency Translation Adjustments	0	0
Goodwill	82	82
North America Other
Goodwill [Roll Forward]
Goodwill	456	465
Goodwill Additions	0	0
Goodwill, VIE Deconsolidation		0
Goodwill, Currency Translation Adjustments	1	(9)
Goodwill	457	456
Europe
Goodwill [Roll Forward]
Goodwill	431	389
Goodwill Additions	4	81
Goodwill, VIE Deconsolidation		0
Goodwill, Currency Translation Adjustments	(59)	(39)
Goodwill	376	431
Latin America
Goodwill [Roll Forward]
Goodwill	76	83
Goodwill Additions	241	0
Goodwill, VIE Deconsolidation		0
Goodwill, Currency Translation Adjustments	11	(7)
Goodwill	328	76
Asia Pacific
Goodwill [Roll Forward]
Goodwill	224	232
Goodwill Additions	0	0
Goodwill, VIE Deconsolidation		0
Goodwill, Currency Translation Adjustments	0	(8)
Goodwill	$ 224	$ 224

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

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Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits from other assets acquired in a business combination that are not individually identified and separately recognized.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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