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Contingencies (Other Matters Narrative) (Details) | 3 Months Ended | 77 Months Ended
--- | --- | ---
Mar. 31, 2015 | Apr. 20, 2015
Lights Multi District Litigation [Member] |  |
Loss Contingencies [Line Items] |  |
Additional class action certifications denied, reversed, dismissed or resolved | 4 mo_AdditionalClassActionCertificationDeniedReversedDismissedOrResolved / us-gaap_LitigationCaseAxis = mo_LightsMultiDistrictLitigationMember |
Lights [Member] |  |
Loss Contingencies [Line Items] |  |
Cases Voluntarily Dismissed | 13 mo_CasesVoluntarilyDismissed / us-gaap_LitigationCaseAxis = mo_LightsMember |
Subsequent Event [Member] |  |
Loss Contingencies [Line Items] |  |
Lights Ultra Lights Class Certification Cases Pending in United States |  | 12 mo_LightsUltraLightsClassCertificationCasesPendingInUnitedStates / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Subsequent Event [Member] | Lights [Member] |  |
Loss Contingencies [Line Items] |  |
Purported number of class action lawsuits served |  | 26 mo_PurportedNumberOfClassActionLawsuitsServed / us-gaap_LitigationCaseAxis = mo_LightsMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember
Additional Class Action Certifications Denied Reversed Dismissed Or Resolved |  | 19 mo_AdditionalClassActionCertificationsDeniedReversedDismissedOrResolved / us-gaap_LitigationCaseAxis = mo_LightsMember / us-gaap_SubsequentEventTypeAxis = us-gaap_SubsequentEventMember

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- Definition Additional Lights cases outside of the MDL proceeding that have been dismissed, not certified as class actions or ordered de-certified; or judgment entered in favor of PM USA by various courts. + References No definition available. + Details
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Namespace Prefix: | mo_
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Period Type: | duration

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- Definition Additional Class Action Certifications Denied Reversed Dismissed Or Resolved + References No definition available. + Details
Name: | mo_AdditionalClassActionCertificationsDeniedReversedDismissedOrResolved
Namespace Prefix: | mo_
Data Type: | xbrli:integerItemType
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Period Type: | instant

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- Definition Cases Voluntarily Dismissed + References No definition available. + Details
Name: | mo_CasesVoluntarilyDismissed
Namespace Prefix: | mo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Definition Lights Ultra Lights Class Certification Cases Pending in United States + References No definition available. + Details
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Namespace Prefix: | mo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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- Definition The number of purported lights cigarettes class action lawsuits served on PM USA and Altria + References No definition available. + Details
Name: | mo_PurportedNumberOfClassActionLawsuitsServed
Namespace Prefix: | mo_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- Details
Name: | us-gaap_LossContingenciesLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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

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- Details
Name: | us-gaap_LitigationCaseAxis=mo_LightsMultiDistrictLitigationMember
Namespace Prefix: |
Data Type: | na
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Period Type: |

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- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |