Contingencies (Schedule Of Pending Cases) (Details)		1 Months Ended	12 Months Ended	269 Months Ended
	Oct. 22, 2018 case	Mar. 31, 2018 case	Oct. 23, 2017 case trial plantiff	Sep. 30, 2018 case	Oct. 24, 2016 case
Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending			87		66
ETS Smoking and Health Case, Flight Attendants [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of claims dismissed		923
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
Number of plaintiffs | plantiff			30
Number of consolidated trials | trial			6
Smoking And Health Class Actions And Aggregated Claims Litigation [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
Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending			4		9
Subsequent Event [Member] | Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of cases pending	101
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | MASSACHUSETTS [Member]
Loss Contingencies [Line Items]
Number of cases pending	29
Subsequent Event [Member] | Individual Smoking And Health Cases [Member] | FLORIDA [Member]
Loss Contingencies [Line Items]
Number of cases pending	38
Subsequent Event [Member] | ETS Smoking and Health Case, Flight Attendants [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of cases	1,491
Subsequent Event [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of cases pending	2
Subsequent Event [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	1
Subsequent Event [Member] | Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	2