Consolidated Statement of Income Statement - USD ($) $ in Millions	12 Months Ended
	Jan. 02, 2016	Jan. 03, 2015	Dec. 28, 2013
Income Statement [Abstract]
Net sales	$ 13,525	$ 14,580	$ 14,792
Cost of goods sold	8,844	9,517	8,689
Selling, general and administrative expense	3,590	4,039	3,266
Operating profit	1,091	1,024	2,837
Interest expense	227	209	235
Other income (expense), net	(91)	10	4
Income before income taxes	773	825	2,606
Income taxes	159	186	792
Earnings (loss) from unconsolidated entities	0	(6)	(6)
Net income	614	633	1,808
Net income (loss) attributable to noncontrolling interests	0	1	1
Net income attributable to Kellogg Company	$ 614	$ 632	$ 1,807
Basic	$ 1.74	$ 1.76	$ 4.98
Diluted	1.72	1.75	4.94
Dividends per share	$ 1.98	$ 1.90	$ 1.80