Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets - Carrying Amount of Goodwill (Details) - USD ($) $ in Millions		12 Months Ended
		Jan. 02, 2016	Jan. 03, 2015
Goodwill [Roll Forward]
Goodwill		$ 4,971	$ 5,051
Goodwill, Acquired During Period		81
Goodwill, Written off Related to Sale of Business Unit		(21)
Goodwill, Translation Adjustments		(63)	(80)
Goodwill		4,968	4,971
U.S. Morning Foods
Goodwill [Roll Forward]
Goodwill	[1]	131	131
Goodwill, Acquired During Period		0
Goodwill, Written off Related to Sale of Business Unit		0
Goodwill, Translation Adjustments		0	0
Goodwill		131	131	[1]
U.S. Snacks
Goodwill [Roll Forward]
Goodwill		3,589	3,589
Goodwill, Acquired During Period		0
Goodwill, Written off Related to Sale of Business Unit		(21)
Goodwill, Translation Adjustments		0	0
Goodwill		3,568	3,589
U.S. Specialty
Goodwill [Roll Forward]
Goodwill		82	82
Goodwill, Acquired During Period		0
Goodwill, Written off Related to Sale of Business Unit		0
Goodwill, Translation Adjustments		0	0
Goodwill		82	82
North America Other
Goodwill [Roll Forward]
Goodwill	[1]	465	470
Goodwill, Acquired During Period		0
Goodwill, Written off Related to Sale of Business Unit		0
Goodwill, Translation Adjustments		(9)	(5)
Goodwill		456	465	[1]
Europe
Goodwill [Roll Forward]
Goodwill		389	452
Goodwill, Acquired During Period		81
Goodwill, Written off Related to Sale of Business Unit		0
Goodwill, Translation Adjustments		(39)	(63)
Goodwill		431	389
Latin America
Goodwill [Roll Forward]
Goodwill		83	89
Goodwill, Acquired During Period		0
Goodwill, Written off Related to Sale of Business Unit		0
Goodwill, Translation Adjustments		(7)	(6)
Goodwill		76	83
Asia Pacific
Goodwill [Roll Forward]
Goodwill		232	238
Goodwill, Acquired During Period		0
Goodwill, Written off Related to Sale of Business Unit		0
Goodwill, Translation Adjustments		(8)	(6)
Goodwill		$ 224	$ 232

[1] In conjunction with the establishment of the Kashi operating segment, included within the North America Other reportable segment, certain intangible assets were reallocated. All prior period balances were updated to conform with current presentation.