Equity (Tables)

12 Months Ended

Dec. 31, 2011

Equity [Abstract]

Earnings per Share [Table Text Block]

			Net income	Average
			attributable to	shares		Earnings
(millions, except per share data)			Kellogg Company	outstanding		per share
2011
	Basic	$	1,231	362	$	3.40
	Dilutive potential common shares			2		(0.02)
	Diluted	$	1,231	364	$	3.38
2010
	Basic	$	1,247	376	$	3.32
	Dilutive potential common shares			2		(0.02)
	Diluted	$	1,247	378	$	3.30
2009
	Basic	$	1,212	382	$	3.17
	Dilutive potential common shares			2		(0.01)
	Diluted	$	1,212	384	$	3.16

Changes in Comprehensive Income [Table Text Block]

							Tax
					Pre-tax		(expense)		After-tax
(millions)					amount		or benefit		amount
2011
Net income								$	1,229
Other comprehensive loss:
	Foreign currency translation adjustments			$	(105)	$	(2)		(107)
	Cash flow hedges:
			Unrealized gain (loss) on cash flow hedges		(51)		18		(33)
			Reclassification to net earnings		(2)		1		(1)
	Postretirement and postemployment benefits:
		Amounts arising during the period:
			Net experience gain (loss)		(728)		236		(492)
			Prior service credit (cost)		(3)		1		(2)
		Reclassification to net earnings:
			Net experience loss		131		(47)		84
			Prior service cost		11		(4)		7
				$	(747)	$	203		(544)
Total comprehensive income								$	685
2010
Net income								$	1,240
Other comprehensive income:
	Foreign currency translation adjustments			$	(18)	$	-		(18)
	Cash flow hedges:
			Unrealized gain (loss) on cash flow hedges		51		(21)		30
			Reclassification to net earnings		34		(9)		25
	Postretirement and postemployment benefits:
		Amounts arising during the period:
			Net experience gain (loss)		(71)		30		(41)
			Prior service credit (cost)		(8)		(13)		(21)
		Reclassification to net earnings:
			Net experience loss		102		(32)		70
			Prior service cost		11		(4)		7
				$	101	$	(49)		52
Total comprehensive income								$	1,292
2009
Net income								$	1,208
Other comprehensive income:
	Foreign currency translation adjustments			$	65	$	-		65
	Cash flow hedges:
			Unrealized gain (loss) on cash flow hedges		(6)		3		(3)
			Reclassification to net earnings		(3)		-		(3)
	Postretirement and postemployment benefits:
		Amounts arising during the period:
			Net experience gain (loss)		161		(72)		89
			Prior service credit (cost)		(33)		11		(22)
		Reclassification to net earnings:
			Net experience loss		63		(21)		42
			Prior service cost		11		(4)		7
				$	258	$	(83)		175
Total comprehensive income								$	1,383

Accumulated Other Comprehensive Income (Loss) [Table Text Block]

Accumulated other comprehensive income (loss) as of December 31, 2011 and January 1, 2011 consisted of the following:
			December 31,		January 1,
(millions)			2011		2011
Foreign currency translation adjustments		$	(896)	$	(789)
Cash flow hedges — unrealized net gain (loss)			(9)		25
Postretirement and postemployment benefits:
	Net experience loss		(1,483)		(1,075)
	Prior service cost		(70)		(75)
Total accumulated other comprehensive income (loss)		$	(2,458)	$	(1,914)