Goodwill and Other Intangible Assets - Intangible Assets Not Subject to Amortization (Details) $ in Millions	6 Months Ended
	Jul. 02, 2016 USD ($)
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	$ 2,199
Additions	18
Contribution to joint venture	(5)
Currency translation adjustment	5
Intangible assets not subject to amortization, ending balance	2,217
U.S. Morning Foods
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	0
Additions	0
Contribution to joint venture	0
Currency translation adjustment	0
Intangible assets not subject to amortization, ending balance	0
U.S. Snacks
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	1,625
Additions	0
Contribution to joint venture	0
Currency translation adjustment	0
Intangible assets not subject to amortization, ending balance	1,625
U.S. Specialty
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	0
Additions	0
Contribution to joint venture	0
Currency translation adjustment	0
Intangible assets not subject to amortization, ending balance	0
North America Other
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	158
Additions	18
Contribution to joint venture	0
Currency translation adjustment	1
Intangible assets not subject to amortization, ending balance	177
Europe
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	416
Additions	0
Contribution to joint venture	(5)
Currency translation adjustment	4
Intangible assets not subject to amortization, ending balance	415
Latin America
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	0
Additions	0
Contribution to joint venture	0
Currency translation adjustment	0
Intangible assets not subject to amortization, ending balance	0
Asia Pacific
Indefinite-lived Intangible Assets [Roll Forward]
Intangible assets not subject to amortization, beginning balance	0
Additions	0
Contribution to joint venture	0
Currency translation adjustment	0
Intangible assets not subject to amortization, ending balance	0
Tolaram
Indefinite-lived Intangible Assets [Roll Forward]
Contribution to joint venture	$ (5)