Restructuring and Cost Reduction Activities - Schedule of Restructuring and Cost Reduction Activities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Oct. 01, 2016	Oct. 03, 2015	Oct. 01, 2016	Oct. 03, 2015
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 40	$ 85	$ 164	$ 243
Program costs to date	993		993
Employee related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6	31	26	64
Program costs to date	285		285
Asset impairment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	0	0	16	18
Program costs to date	121		121
Asset related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	5	15	32	62
Program costs to date	178		178
Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	29	39	90	99
Program costs to date	409		409
Operating Segments | U.S. Morning Foods
Restructuring Cost and Reserve [Line Items]
Restructuring charges	4	30	13	51
Program costs to date	231		231
Operating Segments | U.S. Snacks
Restructuring Cost and Reserve [Line Items]
Restructuring charges	8	15	62	34
Program costs to date	188		188
Operating Segments | U.S. Specialty
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1	1	4	3
Program costs to date	15		15
Operating Segments | North America Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	7	11	20	40
Program costs to date	110		110
Operating Segments | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	6	12	34	56
Program costs to date	207		207
Operating Segments | Latin America
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2	1	6	2
Program costs to date	22		22
Operating Segments | Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring charges	2	2	6	10
Program costs to date	80		80
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	10	$ 13	19	$ 47
Program costs to date	$ 140		$ 140