Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) - USD ($) $ in Millions		3 Months Ended
		Apr. 01, 2017	Apr. 02, 2016	Dec. 31, 2016
Goodwill [Line Items]
Other intangibles, accumulated amortization		$ 56		$ 54	[1]
Amortization		2	$ 2
Change in carrying amount of goodwill
Beginning Balance	[1]	5,166
Purchase price allocation adjustment		(102)
Currency translation adjustment		20
Ending Balance		5,084
U.S. Morning Foods
Goodwill [Line Items]
Other intangibles, accumulated amortization		8		8
Amortization		0
Change in carrying amount of goodwill
Beginning Balance		131
Purchase price allocation adjustment		0
Currency translation adjustment		0
Ending Balance		131
U.S. Snacks
Goodwill [Line Items]
Other intangibles, accumulated amortization		20		19
Amortization		1
Change in carrying amount of goodwill
Beginning Balance		3,568
Purchase price allocation adjustment		0
Currency translation adjustment		0
Ending Balance		3,568
U.S. Specialty
Goodwill [Line Items]
Other intangibles, accumulated amortization		0		0
Amortization		0
Change in carrying amount of goodwill
Beginning Balance		82
Purchase price allocation adjustment		0
Currency translation adjustment		0
Ending Balance		82
North America Other
Goodwill [Line Items]
Other intangibles, accumulated amortization		4		4
Amortization		0
Change in carrying amount of goodwill
Beginning Balance		457
Purchase price allocation adjustment		0
Currency translation adjustment		1
Ending Balance		458
Europe
Goodwill [Line Items]
Other intangibles, accumulated amortization		15		14
Amortization		1
Change in carrying amount of goodwill
Beginning Balance		376
Purchase price allocation adjustment		0
Currency translation adjustment		7
Ending Balance		383
Latin America
Goodwill [Line Items]
Other intangibles, accumulated amortization		6		6
Amortization		0
Change in carrying amount of goodwill
Beginning Balance		328
Purchase price allocation adjustment		(102)
Currency translation adjustment		9
Ending Balance		235
Asia Pacific
Goodwill [Line Items]
Other intangibles, accumulated amortization		3		$ 3
Amortization		0
Change in carrying amount of goodwill
Beginning Balance		224
Purchase price allocation adjustment		0
Currency translation adjustment		3
Ending Balance		$ 227

[1] Condensed from audited financial statements.