Assets excluded from plan assets

No definition available.

Name:	mdlz_AssetsExcludedFromPlanAssets
Namespace Prefix:	mdlz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

The increase in the fair value of plan assets from non-recurring contributions made by the employer.

+ References

No definition available.

+ Details

Name:	mdlz_DefinedBenefitPlanNonrecurringContributionsByEmployer
Namespace Prefix:	mdlz_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Threshold for determining whether a multiemployer plan member is a significant member of the plan.

+ References

No definition available.

+ Details

Name:	mdlz_MultiemployerPlanSignificantMemberThreshold
Namespace Prefix:	mdlz_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Multiemployer Plans, Surcharge Imposed

+ References

No definition available.

+ Details

Name:	mdlz_MultiemployerPlansSurchargeImposed
Namespace Prefix:	mdlz_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Ultimate Annual Turnover Rate

+ References

No definition available.

+ Details

Name:	mdlz_UltimateAnnualTurnoverRate
Namespace Prefix:	mdlz_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of liability, recognized in statement of financial position, for defined benefit pension plan, classified as current. Excludes other postretirement benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(20))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1731-114919

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919

+ Details

Name:	us-gaap_DefinedBenefitPensionPlanLiabilitiesCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanAccumulatedBenefitObligation
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of asset (liability), recognized in statement of financial position, for defined benefit pension and other postretirement plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=64852052&loc=d3e1703-114919

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

+ Details

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

- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationDiscountRate
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Weighted average rate increase of compensation, used to determine benefit obligation of defined benefit plan. Plan includes, but is not limited to, pay-related defined benefit plan.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanAssumptionsUsedCalculatingBenefitObligationRateOfCompensationIncrease
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of contribution received by defined benefit plan from employer which increases plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(5)(ii)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 6
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2709-114920

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)(3)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(5)(iv)(01)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanContributionsByEmployer
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedBenefitPlanDisclosureLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of cost (credit) included in accumulated other comprehensive (income) loss expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

+ References

+ Details

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

- Definition

Amount included in accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan expected to be recognized in net periodic benefit (cost) credit for fiscal year following most recent annual statement of financial position.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedAmortizationOfGainLossNextFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount included in accumulated other comprehensive (income) loss for prior service cost (credit) expected to be recognized in net periodic benefit cost (credit) for fiscal year following most recent annual statement of financial position.

+ References

+ Details

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

- Definition

Amount of benefits for defined benefit plan expected to be paid in remainder of fiscal year.

+ References

No definition available.

+ Details

Name:	us-gaap_DefinedBenefitPlanExpectedFutureBenefitPaymentsRemainderOfFiscalYear
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of net periodic benefit cost (credit) for defined benefit plan.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanNetPeriodicBenefitCost
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of contributions received by defined benefit plan from participant which increases plan assets.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanPlanAssetsContributionsByPlanParticipant
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanPlanAssetsTargetAllocationPercentage
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Percentage of fair value of investments (categorized by debt securities, equity securities, real estate and other plan assets) to the fair value of plan assets held.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e2446-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)(1)
-URI http://asc.fasb.org/extlink&oid=82843861&loc=d3e1928-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanWeightedAverageAssetAllocations
Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=49170846&loc=d3e28014-114942

+ Details

Name:	us-gaap_DefinedContributionPlanCostRecognized
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of contributions made to multiemployer plan by employer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450702-114947

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 5
-Subparagraph (e)(1)
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450657-114947

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 9
-URI http://asc.fasb.org/extlink&oid=65877416&loc=SL14450691-114947

+ Details

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

- Details

Name:	us-gaap_MultiemployerPlanTypeAxis=us-gaap_MultiemployerPlansPensionMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MinimumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MultiemployerPlanNameAxis=mdlz_BakeryConfectioneryTobaccoWorkersAndGrainMillersInternationalPensionFundMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MultiemployerPlanNameAxis=us-gaap_MultiemployerPlanIndividuallyInsignificantMultiemployerPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MultiemployerPlanTypeAxis=us-gaap_MultiemployerPlansPostretirementBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_MultiemployerPlanNameAxis=mdlz_MultiemployerMedicalPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RangeAxis=us-gaap_MaximumMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_ForeignPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_FixedIncomeSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=mdlz_OtherPlanAssetMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis=mdlz_NonUsPensionAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_DebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=mdlz_LiabilityMatchingAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanSponsorLocationAxis=us-gaap_DomesticPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_ChangeInAccountingEstimateByTypeAxis=us-gaap_ChangeInAssumptionsForPensionPlansMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_OtherPostretirementBenefitPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanTypeAxis=us-gaap_PostemploymentRetirementBenefitsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RetirementPlanNameAxis=mdlz_UsAndInternationalInvestmentGradeDebtSecuritiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Benefit Plans - Additional Information (Detail) - USD ($)	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Defined Benefit Plan Disclosure [Line Items]
Pension plans resulted in net pension liability	$ (1,570,000,000)	$ (1,882,000,000)
Plan assets related to certain insurance contracts	71,000,000	62,000,000
Expense for defined contribution plans	43,000,000	44,000,000	$ 45,000,000
Multiemployer Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Multiemployer pension plans	$ 26,000,000	$ 25,000,000	$ 31,000,000
Multiemployer Pension Plans \| Minimum
Defined Benefit Plan Disclosure [Line Items]
Company's contribution of the total contribution of each plan	5.00%	5.00%	5.00%
Multiemployer Pension Plans \| Bakery and Confectionery Union and Industry International Pension Fund
Defined Benefit Plan Disclosure [Line Items]
Multiemployer pension plans	$ 22,000,000	$ 21,000,000	$ 27,000,000
Percentage of surcharge on contribution			10.00%
Multiemployer Pension Plans \| Multiemployer Plan, Individually Insignificant Multiemployer Plans
Defined Benefit Plan Disclosure [Line Items]
Multiemployer pension plans	4,000,000	4,000,000	$ 4,000,000
Multiemployer Plans, Postretirement Benefit \| Multiemployer Medical Plans
Defined Benefit Plan Disclosure [Line Items]
Multiemployer pension plans	18,000,000	19,000,000	20,000,000
Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Estimated from experience differences	209,000,000
Pension Plans \| Maximum
Defined Benefit Plan Disclosure [Line Items]
Estimated prior service cost	1,000,000
Pension Plans \| Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	10,610,000,000	9,531,000,000
Net periodic pension cost	$ 91,000,000	$ 81,000,000	175,000,000
Allocation of pension plan asset	100.00%	100.00%
Employer contribution	$ 470,000,000
Employer non-recurring contribution	250,000,000
Employees contribution	12,000,000
Estimated future employer contributions	$ 250,000,000
Weighted-average discount rate	2.20%	2.31%
Rate of compensation increase	3.31%	3.29%
Pension Plans \| Non-U.S. Pension Plans \| Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Target Allocation on securities	66.00%
Allocation of pension plan asset	60.00%	57.00%
Pension Plans \| Non-U.S. Pension Plans \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Target Allocation on securities	32.00%
Allocation of pension plan asset	28.00%	29.00%
Pension Plans \| Non-U.S. Pension Plans \| Other Plan Asset
Defined Benefit Plan Disclosure [Line Items]
Target Allocation on securities	2.00%
Pension Plans \| Non-U.S. Pension Plans \| Non US Pension Assets
Defined Benefit Plan Disclosure [Line Items]
Allocation of pension plan asset	63.00%
Pension Plans \| Non-U.S. Pension Plans \| Non US Pension Assets \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Target Allocation on securities	23.00%
Pension Plans \| Non-U.S. Pension Plans \| Non US Pension Assets \| Debt Securities
Defined Benefit Plan Disclosure [Line Items]
Target Allocation on securities	20.00%
Pension Plans \| Non-U.S. Pension Plans \| Non US Pension Assets \| Liability Matching Assets
Defined Benefit Plan Disclosure [Line Items]
Target Allocation on securities	57.00%
Pension Plans \| U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 1,715,000,000	$ 1,540,000,000
Net periodic pension cost	$ 81,000,000	$ 95,000,000	102,000,000
Allocation of pension plan asset	100.00%	100.00%
Employer contribution	$ 23,000,000
Estimated future employer contributions	$ 39,000,000
Weighted-average discount rate	3.68%	4.19%
Rate of compensation increase	4.00%	4.00%
Pension Plans \| U.S. Pension Plans \| Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Allocation of pension plan asset	85.00%	63.00%
Pension Plans \| U.S. Pension Plans \| Equity Securities
Defined Benefit Plan Disclosure [Line Items]
Allocation of pension plan asset	15.00%	33.00%
Pension Plans \| Change in Assumptions for Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost		$ (64,000,000)
Postretirement Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost	$ (4,000,000)	22,000,000	43,000,000
Estimated from experience differences	18,000,000
Estimated prior service cost	39,000,000
Current portion of our accrued postretirement benefit obligation	$ 16,000,000	$ 12,000,000
Postretirement Benefit Plans \| Non-U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average discount rate	4.24%	4.55%
Postretirement Benefit Plans \| U.S. Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Weighted-average discount rate	3.66%	4.14%
Postretirement Benefit Plans \| Change in Assumptions for Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost		$ (4,000,000)
Postemployment Benefit Plans
Defined Benefit Plan Disclosure [Line Items]
Net periodic pension cost	$ 6,000,000	$ 12,000,000	$ 12,000,000
Weighted-average discount rate	6.50%	6.20%
Ultimate annual turnover rate	0.30%	0.30%
Rate of compensation increase	4.00%	4.00%
Defined benefit plan, amount to be amortized from accumulated other comprehensive income (loss) next fiscal year	$ 3,000,000
U.S. And International Investment Grade Debt Securities \| Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Target Allocation on securities	95.00%