Contingencies (Overview of Altria Group, Inc. and/or PM USA Tobacco-Related Litigation Narrative) (Details) $ in Millions		1 Months Ended			3 Months Ended	139 Months Ended	207 Months Ended	239 Months Ended
	Apr. 25, 2016 case	Mar. 31, 2015 USD ($)	Feb. 28, 2015 case	May. 31, 2001 USD ($)	Mar. 31, 2015 USD ($) case	Apr. 25, 2016 USD ($) case	Mar. 31, 2016 USD ($) case	Mar. 31, 2016 USD ($) case	Apr. 20, 2015 case	Apr. 21, 2014 case
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending									1	1
Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending									5	6
Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending									64	70
Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending									12	15
Subsequent Event [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	1					1
Subsequent Event [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending	5					5
Subsequent Event [Member] | Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Judgments paid | $						$ 35
Litigation settlement interest expense (income) | $						$ 7
Subsequent Event [Member] | Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending	62					62
Subsequent Event [Member] | Tobacco and Health Judgment [Member]
Loss Contingencies [Line Items]
Judgments paid | $						$ 336
Litigation settlement interest expense (income) | $						$ 148
Subsequent Event [Member] | Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	11					11
Philip Morris USA and Altria Group [Member] | Subsequent Event [Member] | Health Care Cost Recovery Actions [Member] | CANADA
Loss Contingencies [Line Items]
Number of cases pending	8					8
Philip Morris USA and Altria Group [Member] | Subsequent Event [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | CANADA
Loss Contingencies [Line Items]
Number of cases pending	7					7
PM USA [Member] | Pending Litigation [Member] | Other Assets [Member]
Loss Contingencies [Line Items]
Security posted for appeal of judgments | $							$ 99	$ 99
PM USA [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of claims dismissed							1
PM USA [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of claims dismissed								60
PM USA [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | CALIFORNIA
Loss Contingencies [Line Items]
Number of claims dismissed								1
PM USA [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | FLORIDA
Loss Contingencies [Line Items]
Number of claims dismissed								2
PM USA [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | LOUISIANA
Loss Contingencies [Line Items]
Number of claims dismissed								1
PM USA [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | NEW JERSEY
Loss Contingencies [Line Items]
Number of claims dismissed								6
PM USA [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | NEW YORK
Loss Contingencies [Line Items]
Number of claims dismissed								2
PM USA [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | OHIO
Loss Contingencies [Line Items]
Number of claims dismissed								1
PM USA [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | PENNSYLVANIA
Loss Contingencies [Line Items]
Number of claims dismissed								1
PM USA [Member] | Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Payments made | $				$ 500
PM USA [Member] | Non Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Number of verdicts returned							61
Number of favorable verdicts							41
Number of unfavorable verdicts							20
Number of claims resolved							15
PM USA [Member] | Non Engle Progeny Cases [Member] | ALASKA
Loss Contingencies [Line Items]
Number of favorable verdicts							1
PM USA [Member] | Non Engle Progeny Cases [Member] | CALIFORNIA
Loss Contingencies [Line Items]
Number of favorable verdicts							7
PM USA [Member] | Non Engle Progeny Cases [Member] | FLORIDA
Loss Contingencies [Line Items]
Number of favorable verdicts							10
Number cases with granted new trial							1	1
PM USA [Member] | Non Engle Progeny Cases [Member] | LOUISIANA
Loss Contingencies [Line Items]
Number of favorable verdicts							1
PM USA [Member] | Non Engle Progeny Cases [Member] | MASSACHUSETTS
Loss Contingencies [Line Items]
Number of favorable verdicts							2
PM USA [Member] | Non Engle Progeny Cases [Member] | MISSISSIPPI
Loss Contingencies [Line Items]
Number of favorable verdicts							1
PM USA [Member] | Non Engle Progeny Cases [Member] | MISSOURI
Loss Contingencies [Line Items]
Number of favorable verdicts							4
PM USA [Member] | Non Engle Progeny Cases [Member] | NEW HAMPSHIRE
Loss Contingencies [Line Items]
Number of favorable verdicts							1
PM USA [Member] | Non Engle Progeny Cases [Member] | NEW JERSEY
Loss Contingencies [Line Items]
Number of favorable verdicts							1
PM USA [Member] | Non Engle Progeny Cases [Member] | NEW YORK
Loss Contingencies [Line Items]
Number of favorable verdicts							5
PM USA [Member] | Non Engle Progeny Cases [Member] | OHIO
Loss Contingencies [Line Items]
Number of favorable verdicts							2
PM USA [Member] | Non Engle Progeny Cases [Member] | PENNSYLVANIA
Loss Contingencies [Line Items]
Number of favorable verdicts							1
PM USA [Member] | Non Engle Progeny Cases [Member] | RHODE ISLAND
Loss Contingencies [Line Items]
Number of favorable verdicts							1
PM USA [Member] | Non Engle Progeny Cases [Member] | TENNESSEE
Loss Contingencies [Line Items]
Number of favorable verdicts							2
PM USA [Member] | Non Engle Progeny Cases [Member] | WEST VIRGINIA
Loss Contingencies [Line Items]
Number of favorable verdicts							2
PM USA [Member] | Engle Progeny Cases, Federal [Member]
Loss Contingencies [Line Items]
Number of claims resolved			415		415
Payments made | $		$ 43			$ 43
PM USA [Member] | Medical Monitoring Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending							1	1
PM USA [Member] | Subsequent Event [Member] | Health Care Cost Recovery Actions [Member] | CANADA
Loss Contingencies [Line Items]
Number of cases pending	10					10
PM USA [Member] | Subsequent Event [Member] | Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending	2					2
Number of cases set for trial	6					6
Number of verdicts returned	96
Number of favorable verdicts	41
Number of unfavorable verdicts	53
PM USA [Member] | Subsequent Event [Member] | Engle Progeny Cases [Member] | Remanded For a New Trial [Member]
Loss Contingencies [Line Items]
Number of cases pending	1					1
PM USA [Member] | Subsequent Event [Member] | Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases set for trial	0					0
PM USA [Member] | Subsequent Event [Member] | Engle Progeny Cases, Federal [Member]
Loss Contingencies [Line Items]
Number of cases pending	21					21
Number of favorable verdicts	9
PM USA [Member] | Subsequent Event [Member] | Medical Monitoring Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases set for trial	0					0
PM USA [Member] | Subsequent Event [Member] | Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases set for trial	0					0