Loss Contingency, Damages Recoverable, Value

No definition available.

Name:	mo_LossContingencyDamagesRecoverableValue
Namespace Prefix:	mo_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Loss Contingency, Number of Cases With Court Dates Set

+ References

No definition available.

+ Details

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Namespace Prefix:	mo_
Data Type:	xbrli:integerItemType
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- Definition

Loss Contingency, Pending Claims, Consolidated For Pre-Trial Purposes, Number

+ References

No definition available.

+ Details

Name:	mo_LossContingencyPendingClaimsConsolidatedForPreTrialPurposesNumber
Namespace Prefix:	mo_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number Of Third Party Lawsuits

+ References

No definition available.

+ Details

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Namespace Prefix:	mo_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Amount awarded to other party in judgment or settlement of litigation.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
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_LossContingenciesLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of claims settled.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

+ References

No definition available.

+ Details

Name:	us-gaap_LossContingencyNumberOfPlaintiffs
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration

- Definition

Number of pending claims pertaining to a loss contingency.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=121557415&loc=d3e14435-108349

+ Details

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Balance Type:	na
Period Type:	instant

- Details

Name:	srt_LitigationCaseAxis=mo_EvaporLitigationMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_LitigationCaseAxis=mo_IQOSMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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- Details

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- Details

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- Details

Name:	us-gaap_LitigationStatusAxis=us-gaap_SettledLitigationMember
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Contingencies (E-vapor Product Litigation and IQOS Litigation) (Details)	1 Months Ended		9 Months Ended
	Dec. 31, 2020 plantiff case	Apr. 30, 2020 USD ($)	Sep. 30, 2021 USD ($) claim lawsuit	Oct. 25, 2021 claim	Oct. 27, 2020 claim	Oct. 28, 2019 claim
Loss Contingencies [Line Items]
Loss contingency, number of cases with set court dates \| case	4
E-vapor Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending					1,145	0
Number of plaintiffs \| plantiff	20
Number of third party lawsuits \| lawsuit			3
IQOS
Loss Contingencies [Line Items]
Loss contingency, damages recoverable, value \| $		$ 0
Subsequent Event [Member] \| E-vapor Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending				2,951
Class Action Lawsuit [Member] \| Subsequent Event [Member] \| E-vapor Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending				53
Number of pending claims, consolidated for pre-trial purposes				28
Pending Individual Lawsuits [Member] \| Subsequent Event [Member] \| E-vapor Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending				2,548
Pending Lawsuit Filed By School District [Member] \| Subsequent Event [Member] \| E-vapor Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending				350
Settled Litigation [Member] \| E-vapor Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, claims settled, number			1
Litigation settlement \| $			$ 40,000,000