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Goodwill and Other Intangible Assets, net (Narrative) (Details) (USD $)
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Jan. 31, 2009
Dec. 31, 2007
Goodwill And Intangible Assets [Line Items]          
Amortization of intangibles $ 20,000,000us-gaap_AmortizationOfIntangibleAssets $ 20,000,000us-gaap_AmortizationOfIntangibleAssets $ 20,000,000us-gaap_AmortizationOfIntangibleAssets    
Estimated future amortization, year 1 20,000,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths        
Estimated future amortization, year 2 20,000,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo        
Estimated future amortization, year 3 20,000,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree        
Estimated future amortization, year 4 20,000,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour        
Estimated future amortization, year 5 20,000,000us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive        
Goodwill and Intangible Asset Impairment 0us-gaap_GoodwillAndIntangibleAssetImpairment 0us-gaap_GoodwillAndIntangibleAssetImpairment 0us-gaap_GoodwillAndIntangibleAssetImpairment    
Changes in goodwill 111,000,000us-gaap_GoodwillPeriodIncreaseDecrease 0us-gaap_GoodwillPeriodIncreaseDecrease 0us-gaap_GoodwillPeriodIncreaseDecrease    
Changes in other intangible assets 11,000,000mo_IntangiblesPeriodIncreaseDecreaseTotal 0mo_IntangiblesPeriodIncreaseDecreaseTotal 0mo_IntangiblesPeriodIncreaseDecreaseTotal    
Accumulated impairment losses related to goodwill and other intangible assets, net 0mo_GoodwillandOtherIntangibleAssetsImpairedAccumulatedImpairmentLoss 0mo_GoodwillandOtherIntangibleAssetsImpairedAccumulatedImpairmentLoss      
UST [Member]          
Goodwill And Intangible Assets [Line Items]          
Indefinite-lived trademarks       9,100,000,000us-gaap_IndefiniteLivedTrademarks
/ us-gaap_BusinessAcquisitionAxis
= mo_USTMember
 
Middleton [Member]          
Goodwill And Intangible Assets [Line Items]          
Indefinite-lived trademarks         $ 2,600,000,000us-gaap_IndefiniteLivedTrademarks
/ us-gaap_BusinessAcquisitionAxis
= mo_MiddletonMember
Definite-Lived Intangible Assets [Member]          
Goodwill And Intangible Assets [Line Items]          
Definite-lived intangible assets amortization period, maximum, in years 25 years