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Contingencies (E-vapor Product Litigation) (Details) - E-vapor Litigation [Member] - claim | Apr. 26, 2021 | Apr. 27, 2020 | Apr. 22, 2019
--- | --- | --- | ---
Loss Contingencies [Line Items] |  |  |
Number of cases pending |  | 202 | 2
Subsequent Event [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of cases pending | 2,150 |  |
Number of cases set for trial | 0 |  |
Class Action Lawsuit [Member] | Subsequent Event [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of cases pending | 47 |  |
Number of pending claims, consolidated for pre-trial purposes | 21 |  |
Pending Individual Lawsuits [Member] | Subsequent Event [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of cases pending | 1,980 |  |
Pending Lawsuits Filed By State Or Local Governments [Member] | Subsequent Event [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of cases pending | 123 |  |
Pending Lawsuit Filed By School District [Member] | Subsequent Event [Member] |  |  |
Loss Contingencies [Line Items] |  |  |
Number of cases pending | 123 |  |

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- Definition Loss Contingency, Number of Cases Set for Trial + References No definition available. + Details
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Namespace Prefix: | mo_
Data Type: | xbrli:integerItemType
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Period Type: | instant

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- Definition Loss Contingency, Pending Claims, Consolidated For Pre-Trial Purposes, Number + References No definition available. + Details
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Namespace Prefix: | mo_
Data Type: | xbrli:integerItemType
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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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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=121557415&loc=d3e14435-108349 + 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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- Details
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- Details
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