Contingencies (Overview of Altria Group, Inc. and/or PM USA Tobacco-Related Litigation - Schedule Of Pending Cases) (Details)	1 Months Ended	12 Months Ended	24 Months Ended	272 Months Ended
	Mar. 31, 2018 case	Dec. 31, 2018 case	Dec. 31, 2017 case trial plantiff	Dec. 31, 2018 case	Dec. 31, 2016 case
Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on		100	92	100	70
Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on		2	4	2	5
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on		1	1	1	1
Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on		2	3	2	8
Pending Litigation [Member] | ETS Smoking and Health Case, Flight Attendants [Member]
Loss Contingencies [Line Items]
Number of cases		1,490
Number of claims dismissed	923
Philip Morris USA [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of claims dismissed				61
Massachusetts [Member] | Pending Litigation [Member] | Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on		30		30
Florida [Member] | Pending Litigation [Member] | Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on		37		37
Florida [Member] | Philip Morris USA [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of claims dismissed				2
West Virginia [Member] | Pending Litigation [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of cases			30
Number of plaintiffs | plantiff			30
Number of consolidated trials | trial			6
West Virginia [Member] | Philip Morris USA [Member] | Pending Litigation [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of cases			9