Equity (Tables)

12 Months Ended

Dec. 31, 2016

Equity [Abstract]

Schedule of Earnings Per Share

(millions, except per share data)	Net income attributable to Kellogg Company		Average shares outstanding	Earnings per share
2016
Basic	$	694	350	$	1.98
Dilutive potential common shares			4	(0.02		)
Diluted	$	694	354	$	1.96
2015
Basic	$	614	354	$	1.74
Dilutive potential common shares			2	(0.02		)
Diluted	$	614	356	$	1.72
2014
Basic	$	632	358	$	1.76
Dilutive potential common shares			2	(0.01		)
Diluted	$	632	360	$	1.75

Changes in Comprehensive Income

	2016									2015									2014
	Pre-tax			Tax (expense)			After-tax			Pre-tax			Tax (expense)			After-tax			Pre-tax			Tax (expense)			After-tax
	amount			benefit			amount			amount			benefit			amount			amount			benefit			amount
Net income							$	695								$	614								$	633
Other comprehensive income:
Foreign currency translation adjustments	$	(230	)	$	(24	)	(254		)	$	(170	)	$	(26	)	$	(196	)	$	(231	)	(32		)	(263		)
Cash flow hedges:
Unrealized gain (loss) on cash flow hedges	(55		)	22			(33		)	8			(3		)	5			(35		)	18			(17		)
Reclassification to net income	11			(6		)	5			(23		)	3			(20		)	(10		)	2			(8		)
Postretirement and postemployment benefits:
Amounts arising during the period:
Net experience gain (loss)	—			—			—			—			—			—			(8		)	3			(5		)
Prior service credit (cost)	21			(7		)	14			63			(24		)	39			10			(3		)	7
Reclassification to net income:
Net experience loss	3			(1		)	2			3			(1		)	2			3			(1		)	2
Prior service cost	5			(1		)	4			9			(3		)	6			10			(3		)	7
Venezuela deconsolidation loss	63			—			63			—			—			—			—			—			—
Other comprehensive income (loss)	$	(182	)	$	(17	)	$	(199	)	$	(110	)	$	(54	)	$	(164	)	$	(261	)	$	(16	)	$	(277	)
Comprehensive income							$	496								$	450								$	356
Net income (loss) attributable to noncontrolling interests							1									—									1
Other comprehensive income (loss) attributable to noncontrolling interests							—									(1		)							—
Comprehensive income attributable to Kellogg Company							$	495								$	451								$	355

Reclassification out of AOCI

Details about AOCI Components	Amount reclassified from AOCI									Line item impacted within Income Statement
(millions)	2016			2015			2014
Gains and losses on cash flow hedges:
Foreign currency exchange contracts	$	(14	)	$	(40	)	$	(5	)	COGS
Foreign currency exchange contracts	(1		)	2			(3		)	SGA
Interest rate contracts	13			3			(9		)	Interest expense
Commodity contracts	13			12			7			COGS
	$	11		$	(23	)	$	(10	)	Total before tax
	(6		)	3			2			Tax (expense) benefit
	$	5		$	(20	)	$	(8	)	Net of tax
Amortization of postretirement and postemployment benefits:
Net experience loss	$	3		$	3		$	3		(a)
Prior service cost	5			9			10			(a)
	$	8		$	12		$	13		Total before tax
	(2		)	(4		)	(4		)	Tax (expense) benefit
	$	6		$	8		$	9		Net of tax
Venezuela deconsolidation loss	$	63		$	—		$	—		Other (income) expense
Total reclassifications	$	74		$	(12	)	$	1		Net of tax

(a) See Note 10 and Note 11 for further details.

Summary of Accumulated Other Comprehensive Income (Loss)

(millions)	December 31, 2016			January 2, 2016
Foreign currency translation adjustments	$	(1,505	)	$	(1,314	)
Cash flow hedges — unrealized net gain (loss)	(67		)	(39		)
Postretirement and postemployment benefits:
Net experience loss	(14		)	(16		)
Prior service cost	11			(7		)
Total accumulated other comprehensive income (loss)	$	(1,575	)	$	(1,376	)