Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) $ in Millions	3 Months Ended
	Apr. 02, 2016 USD ($)
Change in carrying amount of goodwill
Beginning Balance	$ 4,968	[1]
Currency translation adjustment	6
Ending Balance	4,974
U.S. Morning Foods
Change in carrying amount of goodwill
Beginning Balance	131
Currency translation adjustment	0
Ending Balance	131
U.S. Snacks
Change in carrying amount of goodwill
Beginning Balance	3,568
Currency translation adjustment	0
Ending Balance	3,568
U.S. Specialty
Change in carrying amount of goodwill
Beginning Balance	82
Currency translation adjustment	0
Ending Balance	82
North America Other
Change in carrying amount of goodwill
Beginning Balance	456
Currency translation adjustment	3
Ending Balance	459
Europe
Change in carrying amount of goodwill
Beginning Balance	431
Currency translation adjustment	1
Ending Balance	432
Latin America
Change in carrying amount of goodwill
Beginning Balance	76
Currency translation adjustment	0
Ending Balance	76
Asia Pacific
Change in carrying amount of goodwill
Beginning Balance	224
Currency translation adjustment	2
Ending Balance	$ 226

[1] Condensed from audited financial statements.