Reportable Segments (Details) $ in Millions	3 Months Ended
	Apr. 02, 2016 USD ($)	Apr. 04, 2015 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments	9
Number of remaining reportable segments based on geographical locations	3
Net sales	$ 3,395	$ 3,556
Operating profit (loss)	438	384
Venezuela remeasurement	6	0
Mark-to-market adjustments for pension plans, commodity and foreign currency contracts	(24)	(67)
Operating Profit [Member]
Segment Reporting Information [Line Items]
Venezuela remeasurement	6
Operating Segments
Segment Reporting Information [Line Items]
Operating profit (loss)	472	468
Operating Segments | U.S. Morning Foods
Segment Reporting Information [Line Items]
Net sales	767	776
Operating profit (loss)	148	127
Operating Segments | U.S. Snacks
Segment Reporting Information [Line Items]
Net sales	832	854
Operating profit (loss)	83	80
Operating Segments | U.S. Specialty
Segment Reporting Information [Line Items]
Net sales	376	361
Operating profit (loss)	86	78
Operating Segments | North America Other
Segment Reporting Information [Line Items]
Net sales	414	433
Operating profit (loss)	45	59
Operating Segments | Europe
Segment Reporting Information [Line Items]
Net sales	598	607
Operating profit (loss)	70	61
Operating Segments | Latin America
Segment Reporting Information [Line Items]
Net sales	192	295
Operating profit (loss)	23	51
Operating Segments | Asia Pacific
Segment Reporting Information [Line Items]
Net sales	216	230
Operating profit (loss)	17	12
Corporate
Segment Reporting Information [Line Items]
Operating profit (loss)	$ (34)	$ (84)