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v2.4.1.9

Segment Reporting (Schedule of NPM Adjustment Items) (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2014 | Dec. 31, 2014 | Dec. 31, 2013
NPM Adjustment Items [Line Items] |  |  |
NPM Adjustment Items |  | $ 90,000,000 us-gaap_LitigationSettlementAmount | $ 664,000,000 us-gaap_LitigationSettlementAmount
Smokeable Products [Member] | Philip Morris USA [Member] | Non-Participating Manufacturer Arbitration Panel Decision [Member] |  |  |
NPM Adjustment Items [Line Items] |  |  |
Interest and other debt expense, net | 64,000,000 us-gaap_LitigationSettlementInterest / dei_LegalEntityAxis = mo_PhilipMorrisUSAMember / us-gaap_LitigationCaseAxis = mo_NonParticipatingManufacturerArbitrationPanelDecisionMember / us-gaap_StatementBusinessSegmentsAxis = mo_SmokeableProductsMember | 47,000,000 us-gaap_LitigationSettlementInterest / dei_LegalEntityAxis = mo_PhilipMorrisUSAMember / us-gaap_LitigationCaseAxis = mo_NonParticipatingManufacturerArbitrationPanelDecisionMember / us-gaap_StatementBusinessSegmentsAxis = mo_SmokeableProductsMember | 0 us-gaap_LitigationSettlementInterest / dei_LegalEntityAxis = mo_PhilipMorrisUSAMember / us-gaap_LitigationCaseAxis = mo_NonParticipatingManufacturerArbitrationPanelDecisionMember / us-gaap_StatementBusinessSegmentsAxis = mo_SmokeableProductsMember
Smokeable Products [Member] | Philip Morris USA [Member] | NPM Adjustment to Cost Of Sales [Member] | Non-Participating Manufacturer Arbitration Panel Decision [Member] |  |  |
NPM Adjustment Items [Line Items] |  |  |
NPM Adjustment Items |  | $ 43,000,000 us-gaap_LitigationSettlementAmount / dei_LegalEntityAxis = mo_PhilipMorrisUSAMember / us-gaap_LitigationCaseAxis = mo_NonParticipatingManufacturerArbitrationPanelDecisionMember / us-gaap_NatureOfExpenseAxis = mo_NpmAdjustmentToCostOfSalesMember / us-gaap_StatementBusinessSegmentsAxis = mo_SmokeableProductsMember | $ 664,000,000 us-gaap_LitigationSettlementAmount / dei_LegalEntityAxis = mo_PhilipMorrisUSAMember / us-gaap_LitigationCaseAxis = mo_NonParticipatingManufacturerArbitrationPanelDecisionMember / us-gaap_NatureOfExpenseAxis = mo_NpmAdjustmentToCostOfSalesMember / us-gaap_StatementBusinessSegmentsAxis = mo_SmokeableProductsMember

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- Details
Name: | mo_NPMAdjustmentLineItems
Namespace Prefix: | mo_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Amount of judgment or settlement awarded to (against) the entity in respect of litigation. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementAmount
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Definition Interest expense (income) directly attributable to an award in settlement of litigation. + References No definition available. + Details
Name: | us-gaap_LitigationSettlementInterest
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=mo_SmokeableProductsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |