Consolidated Statement of Equity (Unaudited) (USD $) In Millions	Total		Common Stock [Member]	Capital in Excess of Par Value [Member]	Retained Earnings [Member]	Treasury Stock [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Total Kellogg Company Equity [Member]	Noncontrolling Interests [Member]	Total Comprehensive Income (Loss) [Member]
Balance, value at Jan. 01, 2011	$ 2,154		$ 105	$ 495	$ 6,122	$ (2,650)	$ (1,914)	$ 2,158	$ (4)
Balance, shares at Jan. 01, 2011			419			54
Common stock repurchases, shares						15
Common stock repurchases, value	(793)					(793)		(793)
Acquisition of noncontrolling interest	0			(8)				(8)	8
Net income (loss)	1,229				1,231			1,231	(2)	1,229
Dividends	(604)				(604)			(604)
Other comprehensive income (loss)	(544)						(544)	(544)		(544)
Stock compensation	26			26				26
Stock options exercised and other, shares						(7)
Stock options exercised and other, value	294			9	(28)	313		294
Balance, value at Dec. 31, 2011	1,762	[1]	105	522	6,721	(3,130)	(2,458)	1,760	2	685
Balance, shares at Dec. 31, 2011			419			62
Common stock repurchases, shares	1					1
Common stock repurchases, value	(63)					(63)		(63)
Net income (loss)	955				955			955	0	955
Dividends	(464)				(464)			(464)
Other comprehensive income (loss)	135						135	135		135
Stock compensation	25			25				25
Stock options exercised and other, shares			1			(1)
Stock options exercised and other, value	88			6	(16)	98		88
Balance, value at Sep. 29, 2012	$ 2,438		$ 105	$ 553	$ 7,196	$ (3,095)	$ (2,323)	$ 2,436	$ 2	$ 1,090
Balance, shares at Sep. 29, 2012			420			62

[1] * Condensed from audited financial statements.