Acquisitions, Goodwill and Other Intangible Assets (Carrying Amount of Goodwill) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
Jan. 03, 2015	Dec. 28, 2013
Changes in the carrying amount of goodwill
Beginning Balance	$ 5,051us-gaap_Goodwill	$ 5,038us-gaap_Goodwill
Currency translation adjustment	(80)	(12)
Ending Balance	4,971us-gaap_Goodwill	5,051us-gaap_Goodwill
Pringles [Member]
Changes in the carrying amount of goodwill
Goodwill	0	13
Other [Member]
Changes in the carrying amount of goodwill
Goodwill	0	12
U.S. Morning Foods [Member]
Changes in the carrying amount of goodwill
Beginning Balance	133	133
Currency translation adjustment	0	0
Ending Balance	133	133
U.S. Morning Foods [Member] \| Pringles [Member]
Changes in the carrying amount of goodwill
Goodwill	0	0
U.S. Morning Foods [Member] \| Other [Member]
Changes in the carrying amount of goodwill
Goodwill	0	0
U.S. Snacks [Member]
Changes in the carrying amount of goodwill
Beginning Balance	3,779	3,767
Currency translation adjustment	0	0
Ending Balance	3,779	3,779
U.S. Snacks [Member] \| Pringles [Member]
Changes in the carrying amount of goodwill
Goodwill	0	0
U.S. Snacks [Member] \| Other [Member]
Changes in the carrying amount of goodwill
Goodwill	0	12
U.S. Specialty [Member]
Changes in the carrying amount of goodwill
Beginning Balance	82	82
Currency translation adjustment	0	0
Ending Balance	82	82
U.S. Specialty [Member] \| Pringles [Member]
Changes in the carrying amount of goodwill
Goodwill	0	0
U.S. Specialty [Member] \| Other [Member]
Changes in the carrying amount of goodwill
Goodwill	0	0
North America Other [Member]
Changes in the carrying amount of goodwill
Beginning Balance	278	280
Currency translation adjustment	(5)	(2)
Ending Balance	273	278
North America Other [Member] \| Pringles [Member]
Changes in the carrying amount of goodwill
Goodwill	0	0
North America Other [Member] \| Other [Member]
Changes in the carrying amount of goodwill
Goodwill	0	0
Europe [Member]
Changes in the carrying amount of goodwill
Beginning Balance	452	438
Currency translation adjustment	(63)	4
Ending Balance	389	452
Europe [Member] \| Pringles [Member]
Changes in the carrying amount of goodwill
Goodwill	0	10
Europe [Member] \| Other [Member]
Changes in the carrying amount of goodwill
Goodwill	0	0
Latin America [Member]
Changes in the carrying amount of goodwill
Beginning Balance	89	92
Currency translation adjustment	(6)	(3)
Ending Balance	83	89
Latin America [Member] \| Pringles [Member]
Changes in the carrying amount of goodwill
Goodwill	0	0
Latin America [Member] \| Other [Member]
Changes in the carrying amount of goodwill
Goodwill	0	0
Asia Pacific [Member]
Changes in the carrying amount of goodwill
Beginning Balance	238	246
Currency translation adjustment	(6)	(11)
Ending Balance	232	238
Asia Pacific [Member] \| Pringles [Member]
Changes in the carrying amount of goodwill
Goodwill	0	3
Asia Pacific [Member] \| Other [Member]
Changes in the carrying amount of goodwill
Goodwill	$ 0	$ 0

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

-URI http://asc.fasb.org/extlink&oid=14024403&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

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- Definition

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.

+ References

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=14024403&loc=d3e13816-109267

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- Definition

Amount of increase (decrease) from foreign currency translation adjustments and purchase accounting adjustments of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 350

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (f)

-URI http://asc.fasb.org/extlink&oid=14024403&loc=d3e13816-109267

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