Quarterly Financial Data (Unaudited) (Schedule of Pre-tax Charges or (Gains) Included in Net Earnings Attributable to Altria Group, Inc.) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Condensed Financial Statements, Captions [Line Items]
NPM Adjustment Items									$ (84)	$ (90)	$ (664)
Asset impairment, exit and integration costs	$ 3	$ 1	$ 7	$ 0
Loss on early extinguishment of debt	0	0	0	228	$ 44	$ 0	$ 0	$ 0	228	44	1,084
Other income, net	(5)	0	0	0					$ (5)	$ 0	$ 0
SABMiller special items	30	8	2	86	35	(42)	23	9
Pre-tax charges (gains) included in net earnings	105	(50)	14	357	89	(23)	27	(49)
Asset impairment, exit, integration and acquisition-related costs					5	15	(1)	2
NPM Adjustment
Condensed Financial Statements, Captions [Line Items]
NPM Adjustment Items	42	(126)	0	0	0	0	(26)	(64)
Tobacco and Health Judgment [Member]
Condensed Financial Statements, Captions [Line Items]
Tobacco and health litigation items, including accrued interest	$ 35	$ 67	$ 5	$ 43	$ 5	$ 4	$ 31	$ 4