Defined Benefit Plan, Amount of Plan Participants In Other Jurisdictions, Percentage

No definition available.

Name:	tap_DefinedBenefitPlanAmountOfPlanParticipantsInOtherJurisdictionsPercentage
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Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Defined Benefit Plan, Expected Surplus To Be Used For Benefit Payments

+ References

No definition available.

+ Details

Name:	tap_DefinedBenefitPlanExpectedSurplusToBeUsedForBenefitPayments
Namespace Prefix:	tap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Defined Benefit Plan, Liabilities And Assets Written Off, Percentage

+ References

No definition available.

+ Details

Name:	tap_DefinedBenefitPlanLiabilitiesAndAssetsWrittenOffPercentage
Namespace Prefix:	tap_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

- Definition

Defined Benefit Plan, Obligation Hedged, Amount

+ References

No definition available.

+ Details

Name:	tap_DefinedBenefitPlanObligationHedgedAmount
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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Defined Benefit Plan, Statutory Valuation Period

+ References

No definition available.

+ Details

Name:	tap_DefinedBenefitPlanStatutoryValuationPeriod
Namespace Prefix:	tap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents the maximum percentage of contribution made by the employer towards defined contribution plan.

+ References

No definition available.

+ Details

Name:	tap_DefinedContributionPensionPlanPercentageOfEmployerContributionsHighEndOfRange
Namespace Prefix:	tap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

This element represents the minimum percentage of contribution made by the employer towards defined contribution plan.

+ References

No definition available.

+ Details

Name:	tap_DefinedContributionPensionPlanPercentageOfEmployerContributionsLowEndOfRange
Namespace Prefix:	tap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Increase (Decrease) in Defined Benefit Plan, Accumulated Benefit Obligation

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Prescription Drug Benefit, Amount Paid

+ References

No definition available.

+ Details

Name:	tap_PrescriptionDrugBenefitAmountPaid
Namespace Prefix:	tap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- 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

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
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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of benefit for defined benefit plan expected to be paid in next fiscal year following current fiscal year.

+ References

+ Details

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

- Definition

Amount of contribution expected to be received by defined benefit plan from employer in next fiscal year following current fiscal year.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=123447040&loc=d3e1928-114920

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 55
-Paragraph 18
-URI https://asc.fasb.org/extlink&oid=123450688&loc=d3e4587-114921

+ Details

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

- Definition

Amount of (increase) decrease to benefit obligation of defined benefit plan from irrevocable action relieving primary responsibility for benefit obligation and eliminating risk for obligation and assets used to effect settlement. Includes, but is not limited to, lump-sum cash payment to participant in exchange for right to receive specified benefits, purchase of nonparticipating annuity contract and change from remeasurement.

+ References

+ Details

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

- Definition

Amount of cost for defined contribution plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 70
-Section 50
-Paragraph 1
-URI https://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 contribution received by multiemployer pension plan from all employers participating in multiemployer pension plan determined to be individually significant.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 80
-Section 50
-Paragraph 7
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=65877416&loc=SL14450678-114947

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 80
-Section 55
-Paragraph 8
-URI https://asc.fasb.org/extlink&oid=35742348&loc=SL14450788-114948

+ Details

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

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

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Data Type:	na
Balance Type:
Period Type:

- Details

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- Details

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- Details

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- Details

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- Details

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Employee Retirement Plans and Postretirement Benefits - Narrative (Details) £ in Millions, $ in Millions	1 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)	Jun. 30, 2022 GBP (£)	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)	Dec. 31, 2020 USD ($)
Defined Benefit Plan Disclosure [Line Items]
Pension plan contribution				$ 3.6	$ 7.1	$ 8.2
Benefits paid, including prescription drugs				33.0	33.8	33.0
Pension plan, annuity contract		$ (340.0)
Pension plan, longevity swap, hedged amount \| £			£ 950.0
Defined contribution plan, contribution during the period				73.0	77.8	$ 75.5
Pension
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation	$ 3,000.0			3,000.0	$ 5,100.0
Increase (decrease) in accumulated benefit obligation				(42.5)
Expected future employer contributions	4.0			4.0
Expected future benefit payment, next year	251.4			251.4
OPEB
Defined Benefit Plan Disclosure [Line Items]
Expected future benefit payment, next year	39.5			$ 39.5
U.S. defined contribution plans
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, contributions by employer, low end of the range (as a percent)				5.00%
Defined contribution plan, contributions by employer, high end of the range (as a percent)				11.00%
U.K. and Canadian defined contribution plans
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, contributions by employer, low end of the range (as a percent)				4.00%
Defined contribution plan, contributions by employer, high end of the range (as a percent)				8.50%
UK Pension Plan \| Pension
Defined Benefit Plan Disclosure [Line Items]
Statutory valuation period				3 years
Canadian Defined Benefit Pension Plans
Defined Benefit Plan Disclosure [Line Items]
Pension plan, annuity contract	$ (185.0)
Percentage of plan participants in jurisdictions allowing company to discharge pension liability	0.93
Percentage of assets and liabilities written off	0.93
Canadian Defined Benefit Pension Plans \| Pension
Defined Benefit Plan Disclosure [Line Items]
Expected surplus to be used for benefit payments				$ 5.0
UK defined contribution plan
Defined Benefit Plan Disclosure [Line Items]
Defined contribution plan, contributions by employer, high end of the range (as a percent)				10.00%