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Debt (Long-Term Debt Footnote E) (Details) (USD $)
In Millions, unless otherwise specified
1 Months Ended
Nov. 30, 2011
Jan. 03, 2015
Dec. 28, 2013
Debt Instrument [Line Items]      
Notional amounts of interest rate swaps   $ 4,214invest_DerivativeNotionalAmount $ 3,278invest_DerivativeNotionalAmount
1.875% U.S. Dollar Notes Due 2016 [Member]      
Debt Instrument [Line Items]      
Debt instrument, face amount 500us-gaap_DebtInstrumentFaceAmount
/ us-gaap_DebtInstrumentAxis
= k_FiveYear1875UsDollarNotesDue2016Member
   
Debt Instrument term, in years 5 years    
Debt instrument, stated interest rate 1.875%us-gaap_DebtInstrumentInterestRateStatedPercentage
/ us-gaap_DebtInstrumentAxis
= k_FiveYear1875UsDollarNotesDue2016Member
   
Effective interest rate   1.58%us-gaap_DebtInstrumentInterestRateEffectivePercentage
/ us-gaap_DebtInstrumentAxis
= k_FiveYear1875UsDollarNotesDue2016Member
 
Unamortized gain on termination of interest rate swaps   $ 4us-gaap_DeferredGainLossOnDiscontinuationOfInterestRateFairValueHedge
/ us-gaap_DebtInstrumentAxis
= k_FiveYear1875UsDollarNotesDue2016Member