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Contingencies (Other Smoking and Health Class Actions) (Details) - Smoking And Health Class Actions And Aggregated Claims Litigation [Member] - case | 263 Months Ended |  |  |
--- | --- | --- | --- | ---
Mar. 31, 2018 | Apr. 23, 2018 | Apr. 27, 2017 | Apr. 25, 2016
Loss Contingencies [Line Items] |  |  |  |
Number of cases pending |  |  | 5 | 5
Subsequent Event [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of cases pending |  | 4 |  |
PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 61 |  |  |
ARKANSAS [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
CALIFORNIA [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
DELAWARE [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
DISTRICT OF COLUMBIA [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 2 |  |  |
Florida [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 2 |  |  |
ILLINOIS [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 3 |  |  |
IOWA [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
KANSAS [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
LOUISIANA [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
MARYLAND [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
MICHIGAN [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
MINNESOTA [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
NEVADA [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 29 |  |  |
NEW JERSEY [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 6 |  |  |
NEW YORK [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 2 |  |  |
OHIO [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
OKLAHOMA [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
OREGON [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
PENNSYLVANIA [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
PUERTO RICO [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
SOUTH CAROLINA [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
TEXAS [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
WISCONSIN [Member] | PM USA [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of claims dismissed | 1 |  |  |
CANADA [Member] | Philip Morris USA and Altria Group [Member] | Subsequent Event [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of cases pending |  | 7 |  |
BRITISH COLUMBIA [Member] | Philip Morris USA and Altria Group [Member] | Subsequent Event [Member] |  |  |  |
Loss Contingencies [Line Items] |  |  |  |
Number of cases pending |  | 2 |  |

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