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Contingencies (Engle Class Action And Engle Progeny Trial Results) (Details)
1 Months Ended 3 Months Ended 6 Months Ended 12 Months Ended 165 Months Ended
Jul. 23, 2018
USD ($)
case
plantiff
Feb. 29, 2008
USD ($)
Jul. 31, 2006
USD ($)
plantiff
May 31, 2001
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Jun. 30, 2018
USD ($)
Jun. 30, 2017
USD ($)
Dec. 31, 2015
USD ($)
case
Jun. 30, 2018
USD ($)
Jul. 31, 2000
USD ($)
Loss Contingencies [Line Items]                      
Payments made related to litigation | $         $ 74,000,000 $ 17,000,000 $ 97,000,000 $ 18,000,000      
Engle Progeny Cases [Member]                      
Loss Contingencies [Line Items]                      
Punitive damages awarded | $                     $ 145,000,000,000
Engle Progeny Cases [Member] | PM USA [Member]                      
Loss Contingencies [Line Items]                      
Punitive damages awarded | $                     $ 74,000,000,000
Payments made for litigation | $       $ 500,000,000              
Period for decertified class members could file individual actions     1 year                
Engle Progeny Cases [Member] | PM USA [Member] | Subsequent Event [Member]                      
Loss Contingencies [Line Items]                      
Number of verdicts returned | case 121                    
Number of unfavorable verdicts | case 66                    
Number of claims with unfavorable verdicts pending/reversed | case 8                    
Number of favorable verdicts | case 45                    
Number of verdicts reversed | case 2                    
Engle Progeny Cases, Federal [Member] | PM USA [Member]                      
Loss Contingencies [Line Items]                      
Payments made for litigation | $                   $ 43,000,000  
Payments made related to litigation | $                 $ 43,000,000    
Number of claims resolved | case                 415    
Engle Progeny Cases, Federal [Member] | PM USA [Member] | Subsequent Event [Member]                      
Loss Contingencies [Line Items]                      
Number of cases pending | case 8                    
Engle Progeny Cases, State [Member] | Subsequent Event [Member]                      
Loss Contingencies [Line Items]                      
Number of cases pending | case 2,300                    
Number of plaintiffs | plantiff 3,000                    
Engle Progeny Cases, State [Member] | PM USA [Member] | Subsequent Event [Member]                      
Loss Contingencies [Line Items]                      
Number of favorable verdicts | case 36                    
Engle Progeny Cases, D. Cohen and Collar [Member] | PM USA [Member] | Subsequent Event [Member]                      
Loss Contingencies [Line Items]                      
Number of verdicts reversed | case 2                    
Engle Progeny Cases, Reider and Banks [Member] | PM USA [Member] | Subsequent Event [Member]                      
Loss Contingencies [Line Items]                      
Damages awarded, value | $ $ 0                    
Engle Progeny Cases, Weingart and Hancock [Member] | PM USA [Member] | Subsequent Event [Member]                      
Loss Contingencies [Line Items]                      
Damages awarded, value | $ $ 0                    
FLORIDA [Member] | Engle Progeny Cases, State [Member] | PM USA [Member]                      
Loss Contingencies [Line Items]                      
Compensatory damages awarded | $     $ 6,900,000                
Number individual plaintiffs reinstated | plantiff     2                
Payments made related to litigation | $   $ 3,000,000