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Contingencies (Overview of Altria Group, Inc. and/or PM USA Tobacco-Related Litigation Narrative) (Details) - case
225 Months Ended
Oct. 23, 2017
Sep. 30, 2017
Oct. 24, 2016
Oct. 26, 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     66 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 87      
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   62    
Number of favorable verdicts   41    
Number of unfavorable verdicts   21    
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 7      
Number of verdicts returned 114      
Number of favorable verdicts 45      
Number of unfavorable verdicts 62      
Number of claims with unfavorable verdicts pending/reversed 5      
PM USA [Member] | Subsequent Event [Member] | Individual Smoking And Health Cases [Member]        
Loss Contingencies [Line Items]        
Number of cases set for trial 0      
PM USA [Member] | Subsequent Event [Member] | Lights Ultra Lights Class Actions [Member]        
Loss Contingencies [Line Items]        
Number of cases set for trial 0