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Goodwill and Intangible Assets - Additional Information (Detail) (USD $)
12 Months Ended
Dec. 31, 2014
Brand
Dec. 31, 2013
Dec. 31, 2012
Goodwill and Intangible Assets Disclosure [Line Items]      
Amortization expense for intangible assets $ 206,000,000us-gaap_AmortizationOfIntangibleAssets $ 217,000,000us-gaap_AmortizationOfIntangibleAssets $ 217,000,000us-gaap_AmortizationOfIntangibleAssets
Estimated amortization expense in year 1 200,000,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths    
Estimated amortization expense in year 2 200,000,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo    
Estimated amortization expense in year 3 200,000,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree    
Estimated amortization expense in year 4 200,000,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour    
Estimated amortization expense in year 5 200,000,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive    
Divestiture, goodwill   13,000,000us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit  
Divestiture, intangible assets   7,000,000mdlz_IntangibleAssetsWrittenOffRelatedToDivestedBusinessUnit  
Acquisition of goodwill   209,000,000us-gaap_GoodwillAcquiredDuringPeriod  
Acquisition of intangible assets   48,000,000mdlz_AcquisitionsOfIntangibleAssets  
Asset impairment charges on intangible assets 57,000,000us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill    
Impairment of goodwill 0us-gaap_GoodwillAndIntangibleAssetImpairment 0us-gaap_GoodwillAndIntangibleAssetImpairment 0us-gaap_GoodwillAndIntangibleAssetImpairment
Number of brands 3mdlz_NumberOfIndefiniteLivedIntangiblesFairValueOverBookValueTenPercentOrLess    
Intangible asset, aggregate book value 18,810,000,000us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill 20,067,000,000us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill  
Fair Value Over Book Value 10% or Less      
Goodwill and Intangible Assets Disclosure [Line Items]      
Intangible asset, aggregate book value 341,000,000us-gaap_IndefiniteLivedIntangibleAssetsExcludingGoodwill
/ us-gaap_FairValueByMeasurementBasisAxis
= mdlz_FairValueOverBookValueTenPercentOrLessMember
   
Asia Pacific Segment      
Goodwill and Intangible Assets Disclosure [Line Items]      
Asset impairment charges on intangible assets 48,000,000us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= mdlz_AsiaPacificSegmentMember
   
Europe Segment      
Goodwill and Intangible Assets Disclosure [Line Items]      
Asset impairment charges on intangible assets $ 9,000,000us-gaap_ImpairmentOfIntangibleAssetsExcludingGoodwill
/ us-gaap_StatementBusinessSegmentsAxis
= mdlz_EuropeSegmentMember
   
North America Segment      
Goodwill and Intangible Assets Disclosure [Line Items]      
Number of regional reporting units 2us-gaap_NumberOfReportingUnits
/ us-gaap_StatementBusinessSegmentsAxis
= mdlz_NorthAmericaSegmentMember
4us-gaap_NumberOfReportingUnits
/ us-gaap_StatementBusinessSegmentsAxis
= mdlz_NorthAmericaSegmentMember
 
Weighted Average      
Goodwill and Intangible Assets Disclosure [Line Items]      
Life of our amortizable intangible assets (in years) 13 years 6 months