Consolidated Statement of Equity (Unaudited) - USD ($) shares in Millions, $ in Millions	Total		Common stock	Capital in excess of par value	Retained earnings	Treasury stock	Accumulated other comprehensive income (loss)	Total Kellogg Company equity	Non- controlling interests	Total comprehensive income (loss)
Stockholders' Equity Attributable to Parent								$ 3,545
Balance (in shares) at Dec. 28, 2013			420			57
Balance at Dec. 28, 2013	$ 3,607		$ 105	$ 626	$ 6,749	$ (2,999)	$ (936)		$ 62
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchases (in shares)						11
Common stock repurchases	(690)					$ (690)		(690)
Net income	633				632			632	1	$ 633
Dividends	(681)				(680)			(680)	(1)
Other comprehensive loss	(277)						(277)	(277)		(277)
Stock compensation	29			29				29
Stock options exercised and other (in shares)						(4)
Stock options exercised and other	230			23	(12)	$ 219		230
Balance (in shares) at Jan. 03, 2015			420			64
Balance at Jan. 03, 2015	2,851	[1]	$ 105	678	6,689	$ (3,470)	(1,213)		62	356
Stockholders' Equity Attributable to Parent	$ 2,789	[1]						2,789
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock repurchases (in shares)	6					6
Common stock repurchases	$ (381)					$ (381)		(381)
Acquisition of noncontrolling interest, net	7								7
VIE deconsolidation	(58)								(58)
Net income	654				655			655	$ (1)	654
Dividends	(523)				(523)			(523)
Other comprehensive loss	(109)						(109)	(109)		(109)
Stock compensation	32			32				32
Stock options exercised and other (in shares)						(4)
Stock options exercised and other	200			11	(6)	$ 195		200
Balance (in shares) at Oct. 03, 2015			420			66
Balance at Oct. 03, 2015	2,673		$ 105	$ 721	$ 6,815	$ (3,656)	$ (1,322)		$ 10	$ 545
Stockholders' Equity Attributable to Parent	$ 2,663							$ 2,663

[1] Condensed from audited financial statements.