Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) $ in Millions	9 Months Ended
	Oct. 01, 2016 USD ($)
Change in carrying amount of goodwill
Beginning Balance	$ 4,968	[1]
Goodwill, Acquired During Period	8
Currency translation adjustment	(5)
Ending Balance	4,971
U.S. Morning Foods
Change in carrying amount of goodwill
Beginning Balance	131
Goodwill, Acquired During Period	0
Currency translation adjustment	0
Ending Balance	131
U.S. Snacks
Change in carrying amount of goodwill
Beginning Balance	3,568
Goodwill, Acquired During Period	0
Currency translation adjustment	0
Ending Balance	3,568
U.S. Specialty
Change in carrying amount of goodwill
Beginning Balance	82
Goodwill, Acquired During Period	0
Currency translation adjustment	0
Ending Balance	82
North America Other
Change in carrying amount of goodwill
Beginning Balance	456
Goodwill, Acquired During Period	0
Currency translation adjustment	2
Ending Balance	458
Europe
Change in carrying amount of goodwill
Beginning Balance	431
Goodwill, Acquired During Period	8
Currency translation adjustment	(8)
Ending Balance	431
Latin America
Change in carrying amount of goodwill
Beginning Balance	76
Goodwill, Acquired During Period	0
Currency translation adjustment	(2)
Ending Balance	74
Asia Pacific
Change in carrying amount of goodwill
Beginning Balance	224
Goodwill, Acquired During Period	0
Currency translation adjustment	3
Ending Balance	$ 227

[1] Condensed from audited financial statements.