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Contingencies (Certain Other Tobacco-Related Litigation) (Details) - Argentine Growers Case [Member] | 1 Months Ended |
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Apr. 30, 2014 case defendant | Sep. 30, 2016 case
Loss Contingencies [Line Items] |  |
Number of defendants | defendant | 3 |
PM USA [Member] |  |
Loss Contingencies [Line Items] |  |
Number of cases pending |  | 6
PM USA [Member] | Pending Litigation [Member] |  |
Loss Contingencies [Line Items] |  |
Number of cases pending | 5 |

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

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- Definition Number of defendants named in a legal action. + References No definition available. + Details
Name: | us-gaap_LossContingencyNumberOfDefendants
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

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- 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=82911808&loc=d3e14435-108349 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

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

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- Details
Name: | us-gaap_LitigationStatusAxis=us-gaap_PendingLitigationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |