Earnings Per Share (Basic and Diluted Earnings Per Share) (Details) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Earnings Per Share [Abstract]
Net earnings attributable to Altria	$ 1,943	$ 1,996	$ 3,495	$ 3,116
Less: Distributed and undistributed earnings attributable to share-based awards	(3)	(2)	(5)	(4)
Earnings for basic and diluted EPS	$ 1,940	$ 1,994	$ 3,490	$ 3,112
Weighted-average shares for basic and diluted EPS (in shares)	1,858	1,870	1,858	1,872
Plus: contingently issuable performance stock units (in shares)	1	0	1	0
Weighted-average shares for diluted EPS (in shares)	1,859	1,870	1,859	1,872