Contingencies (Overview of Altria and/or PM USA Tobacco-Related Litigation Narrative) (Details) - case		234 Months Ended
	Jul. 23, 2018	Jun. 30, 2018	Jul. 24, 2017	Jul. 22, 2016
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			4	5
Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending			90	62
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	3
Subsequent Event [Member] | Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending	97
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | FLORIDA [Member]
Loss Contingencies [Line Items]
Number of cases pending	38
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | MASSACHUSETTS [Member]
Loss Contingencies [Line Items]
Number of cases pending	27
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		63
Number of favorable verdicts		42
Number of unfavorable verdicts		21
Number of claims resolved		19
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] | CONNECTICUT [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts		1
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	10
Number of verdicts returned	121
Number of favorable verdicts	45
Number of unfavorable verdicts	66
Number of claims with unfavorable verdicts pending/reversed	8
PM USA [Member] | Subsequent Event [Member] | Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases set for trial	1