Goodwill and Other Intangible Assets (Intangible Assets not Subject to Amortization) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 28, 2014
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	$ 2,265
Currency translation adjustment	(2)
Ending Balance	2,263
U.S. Morning Foods [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	63
Currency translation adjustment	0
Ending Balance	63
U.S. Snacks [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	1,625
Currency translation adjustment	0
Ending Balance	1,625
U.S. Specialty [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	0
Currency translation adjustment	0
Ending Balance	0
North America Other [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	95
Currency translation adjustment	0
Ending Balance	95
Europe [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	482
Currency translation adjustment	(2)
Ending Balance	480
Latin America [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	0
Currency translation adjustment	0
Ending Balance	0
Asia Pacific [Member]
Indefinite-lived Intangible Assets by Major Class [Line Items]
Beginning Balance	0
Currency translation adjustment	0
Ending Balance	$ 0