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Debt (Fair Values) (Details) (Fair Value, Inputs, Level 2 [Member], USD $) In Billions, unless otherwise specified | Sep. 30, 2014 | Dec. 31, 2013
--- | --- | ---
Estimate of Fair Value Measurement [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Aggregate value of Altria's total debt | $ 16.0 | $ 16.1
Carrying Value [Member] |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |
Aggregate value of Altria's total debt | $ 14.0 | $ 14.5

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