Name:	k_ForeignCurrencyExchangeRateDevaluation
Namespace Prefix:	k_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

Foreign Currency [Line Items]

No definition available.

Name:	k_ForeignCurrencyLineItems
Namespace Prefix:	k_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Percentage of raw material needs.

No definition available.

Name:	k_Percentageofrawmaterials
Namespace Prefix:	k_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Pretax remeasurement charge as a result of moving from the CENCOEX rate to the SIMADI rate in Venezuela.

No definition available.

Name:	k_VenezuelaRemeasurementChargePretax
Namespace Prefix:	k_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

The amount that will be recognized through the income statement (as well as the impact on the other financial statements) as part of highly inflationary accounting.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 830
-SubTopic 30
-Section S99
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6897108&loc=SL6897125-166521

Name:	us-gaap_AmountRecognizedInIncomeDueToInflationaryAccounting
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

The reporting currency-denominated asset value.

Name:	us-gaap_AssetReportingCurrencyDenominatedValue
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13531-108611

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=51801978&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13537-108611

Name:	us-gaap_ConcentrationRiskPercentage1
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

Foreign exchange rate used to remeasure amounts denominated in a currency other than functional currency into functional currency.

Name:	us-gaap_ForeignCurrencyExchangeRateRemeasurement1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	instant

Name:	k_VenezuelaChargeTypeAxis=k_NetMonetaryAssetDevaluationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	k_VenezuelaChargeTypeAxis=us-gaap_InventoryValuationReserveMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	k_VenezuelaChargeTypeAxis=k_AssetImpairmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_StatementGeographicalAxis=country_VE
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	k_ForeignExchangeMechanismAxis=k_SimadiFormerlyKnownAsSicad2Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_CurrencyAxis=currency_VEF
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	k_ForeignExchangeMechanismAxis=k_SicadMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	k_ForeignExchangeMechanismAxis=k_CencoexFormerlyKnownAsCadiviMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_SellingGeneralAndAdministrativeExpensesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_IncomeStatementLocationAxis=us-gaap_CostOfGoodsTotalMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_IncomeStatementLocationAxis=k_OtherIncomeExpenseNetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Name:	us-gaap_ConcentrationRiskByTypeAxis=us-gaap_GeographicConcentrationRiskMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: