Acquisitions, Goodwill and Other Intangible Assets (Intangible Assets not Subject to Amortization) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Sep. 29, 2012
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	$ 1,443
Pringles brand	776
Currency translation adjustment	17
Ending Balance	2,236
U.S. Morning Foods and Kashi [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	158
Pringles brand	0
Currency translation adjustment	0
Ending Balance	158
U.S. Snacks [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	1,285
Pringles brand	340
Currency translation adjustment	0
Ending Balance	1,625
U.S. Specialty [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	0
Pringles brand	0
Currency translation adjustment	0
Ending Balance	0
North America Other [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	0
Pringles brand	0
Currency translation adjustment	0
Ending Balance	0
Europe [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	0
Pringles brand	436
Currency translation adjustment	17
Ending Balance	453
Latin America [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	0
Pringles brand	0
Currency translation adjustment	0
Ending Balance	0
Asia Pacific [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	0
Pringles brand	0
Currency translation adjustment	0
Ending Balance	$ 0