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Contingencies (Schedule Of Pending Cases) (Details) |  |  | 1 Months Ended | 263 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Apr. 27, 2018 case | Apr. 23, 2018 case trial plantiff | Mar. 31, 2018 case | Mar. 31, 2018 case | Apr. 27, 2017 case | Apr. 25, 2016 case
Individual Smoking And Health Cases [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of unfavorable verdicts partially or entirely reversed on appeal |  |  |  |  | 80 | 62
Individual Smoking And Health Cases [Member] | Subsequent Event [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of unfavorable verdicts partially or entirely reversed on appeal |  | 102 |  |  |  |
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 unfavorable verdicts partially or entirely reversed on appeal |  |  |  |  | 5 | 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] | 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 cases | 5 | 30 |  |  |  |
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 | 2 | 9 |  |  |  |
Number of claims dismissed |  | 25 |  |  |  |
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 |  |  |  |  | 5 | 11
Lights Ultra Lights Class Actions [Member] | Subsequent Event [Member] |  |  |  |  |  |
Loss Contingencies [Line Items] |  |  |  |  |  |
Number of unfavorable verdicts partially or entirely reversed on appeal |  | 3 |  |  |  |

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