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Income Taxes - Additional Information (Detail) (USD $)
 12 Months Ended 3 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2014
Jan. 01, 2014
Dec. 31, 2011
Income Tax Contingency [Line Items]            
Impact on provision for income tax, out-of-period adjustments $ 31,000,000us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions          
Effective tax rate 13.80%us-gaap_EffectiveIncomeTaxRateContinuingOperations 2.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations 9.50%us-gaap_EffectiveIncomeTaxRateContinuingOperations      
Settlements with various foreign and state tax authorities 206,000,000mdlz_EffectiveTaxRateNetTaxBenefits 299,000,000mdlz_EffectiveTaxRateNetTaxBenefits 140,000,000mdlz_EffectiveTaxRateNetTaxBenefits      
Loss carryforwards 3,432,000,000us-gaap_OperatingLossCarryforwards     3,432,000,000us-gaap_OperatingLossCarryforwards    
Accumulated earnings of foreign subsidiaries 13,200,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries     13,200,000,000us-gaap_UndistributedEarningsOfForeignSubsidiaries    
Unrecognized tax benefits 852,000,000us-gaap_UnrecognizedTaxBenefits 1,189,000,000us-gaap_UnrecognizedTaxBenefits 1,164,000,000us-gaap_UnrecognizedTaxBenefits 852,000,000us-gaap_UnrecognizedTaxBenefits 1,189,000,000us-gaap_UnrecognizedTaxBenefits 1,522,000,000us-gaap_UnrecognizedTaxBenefits
Impact on tax provision from unrecognized tax benefits 744,000,000mdlz_ImpactOnTaxProvisionFromUnrecognizedTaxBenefits     744,000,000mdlz_ImpactOnTaxProvisionFromUnrecognizedTaxBenefits 1,110,000,000mdlz_ImpactOnTaxProvisionFromUnrecognizedTaxBenefits  
Unrecognized tax benefits reasonably possible increase resulting from unfavorable audit developments 60,000,000mdlz_UnrecognizedTaxBenefitsReasonablyPossibleIncreaseDueToUnfavorableAuditDevelopments          
Unrecognized tax benefits reasonably possible reductions due to audit settlements and expiration of statutes of limitations 145,000,000mdlz_UnrecognizedTaxBenefitsReasonablyPossibleReductionsDueToAuditSettlementsAndExpirationOfStatutesOfLimitations          
Unrecognized tax benefits, income tax penalties and interest accrued 184,000,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued     184,000,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued 228,000,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued  
Net benefit for interest and penalties 2,000,000us-gaap_UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense          
Expire at various dates between 2015 and 2033            
Income Tax Contingency [Line Items]            
Loss carryforwards 1,430,000,000us-gaap_OperatingLossCarryforwards
/ mdlz_OperatingLossCarryforwardsByDurationAxis
= mdlz_VariousExpirationPeriodsMember		     1,430,000,000us-gaap_OperatingLossCarryforwards
/ mdlz_OperatingLossCarryforwardsByDurationAxis
= mdlz_VariousExpirationPeriodsMember		    
Indefinitely            
Income Tax Contingency [Line Items]            
Loss carryforwards 2,002,000,000us-gaap_OperatingLossCarryforwards
/ mdlz_OperatingLossCarryforwardsByDurationAxis
= mdlz_IndefiniteMember		     2,002,000,000us-gaap_OperatingLossCarryforwards
/ mdlz_OperatingLossCarryforwardsByDurationAxis
= mdlz_IndefiniteMember		    
Lapse Of Statutes Of Limitations            
Income Tax Contingency [Line Items]            
Impact on provision for income tax, out-of-period adjustments       $ 43,000,000us-gaap_TaxAdjustmentsSettlementsAndUnusualProvisions
/ mdlz_IncomeTaxesAdditionalInformationAxis
= mdlz_LapseOfStatutesOfLimitationsMember