Earnings (Losses) Per Share (Basic and Diluted Earnings Per Share) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Earnings Per Share [Abstract]
Net earnings (losses) attributable to Altria	$ (2,600)	$ 1,943	$ 516	$ 5,713
Less: Distributed and undistributed earnings attributable to share-based awards	(1)	(2)	(5)	(7)
Earnings (losses) for basic and diluted EPS	$ (2,601)	$ 1,941	$ 511	$ 5,706
Weighted-average shares for basic and diluted EPS (in shares)	1,868	1,883	1,871	1,891