Contingencies (Schedule Of Pending Cases) (Details)		1 Months Ended	3 Months Ended	266 Months Ended
	Jul. 23, 2018 case trial plantiff	Mar. 31, 2018 case	Jun. 30, 2018 case	Jun. 30, 2018 case	Jul. 24, 2017 case	Jul. 22, 2016 case
Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending					90	62
Individual Smoking And Health Cases [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending	97
Individual Smoking And Health Cases [Member] | Subsequent Event [Member] | MASSACHUSETTS [Member]
Loss Contingencies [Line Items]
Number of cases pending	27
Individual Smoking And Health Cases [Member] | Subsequent Event [Member] | FLORIDA [Member]
Loss Contingencies [Line Items]
Number of cases pending	38
ETS Smoking and Health Case, Flight Attendants [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of claims dismissed		923
ETS Smoking and Health Case, Flight Attendants [Member] | Subsequent Event [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of cases	1,491
Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending					4	5
Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed				61
Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | FLORIDA [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed				2
Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | Pending Litigation [Member] | WEST VIRGINIA [Member]
Loss Contingencies [Line Items]
Number of cases			30
Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending	3
Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | Subsequent Event [Member] | Pending Litigation [Member] | WEST VIRGINIA [Member]
Loss Contingencies [Line Items]
Number of plaintiffs | plantiff	30
Number of consolidated trials | trial	6
Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | Subsequent Event [Member] | Pending Litigation [Member] | WEST VIRGINIA [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of cases	9
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending					1	1
Health Care Cost Recovery Actions [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending	1
Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending					4	9
Lights Ultra Lights Class Actions [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending	3