Other Comprehensive Earnings/Losses (Changes in Each Component of Accumulated Other Comprehensive Losses) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended		12 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Accumulated Other Comprehensive Income [Roll Forward]
Balances at beginning of period		$ (2,945)	$ (1,318)	$ (2,682)	$ (1,378)	$ (1,378)
Other comprehensive earnings (losses) before reclassifications		37	100	(435)	151
Deferred income taxes		(13)	(35)	151	(53)
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes		24	65	(284)	98
Amounts reclassified to earnings		71	39	143	83
Deferred income taxes		(28)	(15)	(55)	(32)
Amounts reclassified to net earnings, net of deferred income taxes		43	24	88	51
Other comprehensive earnings (losses), net of deferred income taxes		67	89	(196)	149	(1,304)
Balances at end of period		(2,878)	(1,229)	(2,878)	(1,229)	(2,682)
Accumulated Translation Adjustment [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Balances at beginning of period		(3)	0	(2)
Other comprehensive earnings (losses) before reclassifications		0	1	(1)	1
Deferred income taxes		0	0	0	0
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes		0	1	(1)	1
Amounts reclassified to earnings		0	0	0	0
Deferred income taxes		0	0	0	0
Amounts reclassified to net earnings, net of deferred income taxes		0	0	0	0
Other comprehensive earnings (losses), net of deferred income taxes		0	1	(1)	1
Balances at end of period		(3)	1	(3)	1	(2)
Accumulated Defined Benefit Plans Adjustment [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Balances at beginning of period		(1,998)	(1,248)	(2,040)	(1,273)	(1,273)
Other comprehensive earnings (losses) before reclassifications		0	0	0	0
Deferred income taxes		0	0	0	0
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes		0	0	0	0
Amounts reclassified to earnings		66	39	134	80
Deferred income taxes		(27)	(15)	(53)	(31)
Amounts reclassified to net earnings, net of deferred income taxes		39	24	81	49
Other comprehensive earnings (losses), net of deferred income taxes		39	24	81	49
Balances at end of period		(1,959)	(1,224)	(1,959)	(1,224)	(2,040)
SABMiller Plc [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Balances at beginning of period		(944)	(70)	(640)	(105)	(105)
Other comprehensive earnings (losses) before reclassifications		37	99	(434)	150
Deferred income taxes		(13)	(35)	151	(53)
Other comprehensive earnings (losses) before reclassifications, net of deferred income taxes		24	64	(283)	97
Amounts reclassified to earnings		5	0	9	3
Deferred income taxes		(1)	0	(2)	(1)
Amounts reclassified to net earnings, net of deferred income taxes		4	0	7	2
Other comprehensive earnings (losses), net of deferred income taxes	[1]	28	64	(276)	99
Balances at end of period		$ (916)	$ (6)	$ (916)	$ (6)	$ (640)

[1] For the six and three months ended June 30, 2015 and 2014, Altria Group, Inc.’s proportionate share of SABMiller’s other comprehensive earnings/losses consisted primarily of currency translation adjustments.