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Earnings per Share (Details) - USD ($) shares in Millions, $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Earnings Per Share [Abstract] |  |  |  |  |  |  |  |  |  |  |
Net earnings attributable to Altria Group, Inc. | $ 4,966 | $ 1,866 | $ 1,989 | $ 1,401 | $ 10,276 | $ 1,093 | $ 1,653 | $ 1,217 | $ 10,222 | $ 14,239 | $ 5,241
Less: Distributed and undistributed earnings attributable to share-based awards |  |  |  |  |  |  |  |  | (14) | (24) | (10)
Earnings for basic and diluted EPS |  |  |  |  |  |  |  |  | $ 10,208 | $ 14,215 | $ 5,231
Weighted-average shares for basic and diluted EPS |  |  |  |  |  |  |  |  | 1,921 | 1,952 | 1,961

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