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Contingencies Contingencies (State Class Certifications) (Details) (USD $) | 1 Months Ended
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Feb. 28, 2014
Brown Case [Member] | Lights [Member] |
Loss Contingencies [Line Items] |
Court Ordered Costs Returned To Defendant | $ 764,553 mo_CourtOrderedCostsReturnedToDefendant / dei_LegalEntityAxis = mo_BrownCaseMember / us-gaap_LitigationCaseAxis = mo_LightsMember
Maximum [Member] | Aspinall [Member] | Lights Ultra Lights Class Actions [Member] |
Loss Contingencies [Line Items] |
Loss Contingency, Damages Sought, Value | $ 25 us-gaap_LossContingencyDamagesSoughtValue / dei_LegalEntityAxis = mo_AspinallMember / us-gaap_LitigationCaseAxis = mo_LightsUltraLightsClassActionsMember / us-gaap_RangeAxis = us-gaap_MaximumMember

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- Definition Court Ordered Costs Returned To Defendant + References No definition available. + Details
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Namespace Prefix: | mo_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

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- Definition The value (monetary amount) of the award the plaintiff seeks in the legal matter. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14435-108349 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 450 -SubTopic 20 -Section 50 -Paragraph 9 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14557-108349 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | dei_LegalEntityAxis=mo_BrownCaseMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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