Contingencies (Schedule Of Pending Cases) (Details)		1 Months Ended
	Oct. 23, 2017 case phase	Jul. 31, 2015 case trial plantiff	Oct. 24, 2016 case	Oct. 26, 2015 case
Individual Smoking And Health Cases [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on appeal			66	65
Individual Smoking And Health Cases [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on appeal	87
ETS Smoking and Health Case, Flight Attendants [Member] | Subsequent Event [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of cases	2,423
Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on appeal			5	5
Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | Pending Litigation [Member] | WEST VIRGINIA [Member]
Loss Contingencies [Line Items]
Number of plaintiffs | plantiff		30
Number of cases		30
Number of consolidated trials | trial		6
Number of plaintiffs per group | plantiff		5
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
Smoking And Health Class Actions And Aggregated Claims Litigation [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on appeal	4
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 civil actions	600
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 civil actions	344
Number of trial phases | phase	2
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on appeal			1	1
Health Care Cost Recovery Actions [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on appeal	1
Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on appeal			9	12
Lights Ultra Lights Class Actions [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts partially or entirely reversed on appeal	4