Contingencies (Overview of Altria Group, Inc. and/or PM USA Tobacco-Related Litigation Narrative) (Details) - case		222 Months Ended
	Jul. 24, 2017	Jun. 30, 2017	Jul. 22, 2016	Jul. 24, 2015
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	5
Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending			62	65
Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending			9	12
Subsequent Event [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	1
Subsequent Event [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending	4
Subsequent Event [Member] | Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending	90
Subsequent Event [Member] | Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	4
Philip Morris USA and Altria Group [Member] | Subsequent Event [Member] | Health Care Cost Recovery Actions [Member] | CANADA [Member]
Loss Contingencies [Line Items]
Number of cases pending	8
Philip Morris USA and Altria Group [Member] | Subsequent Event [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | CANADA [Member]
Loss Contingencies [Line Items]
Number of cases pending	7
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		18
PM USA [Member] | Non Engle Progeny Cases [Member] | ALASKA [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		1
PM USA [Member] | Non Engle Progeny Cases [Member] | CALIFORNIA [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		7
PM USA [Member] | Non Engle Progeny Cases [Member] | FLORIDA [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		10
Number cases with granted new trial		1
PM USA [Member] | Non Engle Progeny Cases [Member] | LOUISIANA [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		1
PM USA [Member] | Non Engle Progeny Cases [Member] | MASSACHUSETTS [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		2
PM USA [Member] | Non Engle Progeny Cases [Member] | MISSISSIPPI [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		1
PM USA [Member] | Non Engle Progeny Cases [Member] | MISSOURI [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		4
PM USA [Member] | Non Engle Progeny Cases [Member] | NEW HAMPSHIRE [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		1
PM USA [Member] | Non Engle Progeny Cases [Member] | NEW JERSEY [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		1
PM USA [Member] | Non Engle Progeny Cases [Member] | NEW YORK [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		5
PM USA [Member] | Non Engle Progeny Cases [Member] | OHIO [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		2
PM USA [Member] | Non Engle Progeny Cases [Member] | PENNSYLVANIA [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		1
PM USA [Member] | Non Engle Progeny Cases [Member] | RHODE ISLAND [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		1
PM USA [Member] | Non Engle Progeny Cases [Member] | TENNESSEE [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		2
PM USA [Member] | Non Engle Progeny Cases [Member] | WEST VIRGINIA [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		2
PM USA [Member] | Subsequent Event [Member] | Health Care Cost Recovery Actions [Member] | CANADA [Member]
Loss Contingencies [Line Items]
Number of cases pending	10
PM USA [Member] | Subsequent Event [Member] | Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Number of cases set for trial	4
Number of verdicts returned	110
Number of favorable verdicts	44
Number of unfavorable verdicts	62
Number of claims with unfavorable verdicts pending/reversed	2
PM USA [Member] | Subsequent Event [Member] | Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases set for trial	1
PM USA [Member] | Subsequent Event [Member] | Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases set for trial	0