Restructuring and Cost Reduction Activities - Schedule of Restructuring and Cost Reduction Activities (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jul. 04, 2015	Jun. 28, 2014	Jul. 04, 2015	Jun. 28, 2014
Restructuring Cost and Reserve [Line Items]
Restructuring charges	$ 90	$ 78	$ 158	$ 132
Program costs to date	664		664
Employee related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	16	35	33	52
Program costs to date	230		230
Asset related costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	24	7	47	10
Program costs to date	90		90
Asset impairment
Restructuring Cost and Reserve [Line Items]
Restructuring charges	18	0	18	0
Program costs to date	105		105
Other costs
Restructuring Cost and Reserve [Line Items]
Restructuring charges	32	36	60	70
Program costs to date	239		239
Operating Segments | U.S. Morning Foods
Restructuring Cost and Reserve [Line Items]
Restructuring charges	13	15	21	26
Program costs to date	181		181
Operating Segments | U.S. Snacks
Restructuring Cost and Reserve [Line Items]
Restructuring charges	10	3	19	10
Program costs to date	95		95
Operating Segments | U.S. Specialty
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1	0	2	1
Program costs to date	8		8
Operating Segments | North America Other
Restructuring Cost and Reserve [Line Items]
Restructuring charges	23	6	29	9
Program costs to date	56		56
Operating Segments | Europe
Restructuring Cost and Reserve [Line Items]
Restructuring charges	25	28	44	40
Program costs to date	143		143
Operating Segments | Latin America
Restructuring Cost and Reserve [Line Items]
Restructuring charges	1	1	1	5
Program costs to date	13		13
Operating Segments | Asia Pacific
Restructuring Cost and Reserve [Line Items]
Restructuring charges	3	5	8	11
Program costs to date	69		69
Corporate
Restructuring Cost and Reserve [Line Items]
Restructuring charges	14	$ 20	34	$ 30
Program costs to date	$ 99		$ 99