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