Restructuring and Cost Reduction Activities - Schedule of Restructuring and Cost Reduction Activities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 02, 2016	Jul. 04, 2015	Jul. 02, 2016	Jul. 04, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 72	$ 90	$ 124	$ 158
Program costs to date	953		953
Employee related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6	16	20	33
Program costs to date	279		279
Asset impairment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	16	18	16	18
Program costs to date	121		121
Asset related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	17	24	27	47
Program costs to date	173		173
Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	33	32	61	60
Program costs to date	380		380
Operating Segments | U.S. Morning Foods
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4	13	9	21
Program costs to date	227		227
Operating Segments | U.S. Snacks
Restructuring Cost and Reserve [Line Items]
Restructuring charges	34	10	54	19
Program costs to date	180		180
Operating Segments | U.S. Specialty
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1	1	3	2
Program costs to date	14		14
Operating Segments | North America Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4	23	13	29
Program costs to date	103		103
Operating Segments | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	14	25	28	44
Program costs to date	201		201
Operating Segments | Latin America
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4	1	4	1
Program costs to date	20		20
Operating Segments | Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4	3	4	8
Program costs to date	78		78
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	7	$ 14	9	$ 34
Program costs to date	$ 130		$ 130