Contingencies (Other Smoking and Health Class Actions Narrative) (Details) - Smoking And Health Class Actions And Aggregated Claims Litigation [Member] - case		256 Months Ended	259 Months Ended
	Jan. 29, 2018	Sep. 30, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Loss Contingencies [Line Items]
Number of cases pending			4	5	5
Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			61
Philip Morris USA and Altria Group [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Loss Contingency, Actions Taken by Defendant	7
Arkansas [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
California [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Delaware [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed		1
District Of Columbia [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			2
Florida [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			2
Illinois [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			3
Iowa [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Kansas [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Louisiana [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Maryland [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Michigan [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Minnesota [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Nevada [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			29
New Jersey [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			6
New York [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			2
Ohio [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Oklahoma [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Oregon [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Pennsylvania [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Puerto Rico [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
South Carolina [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Texas [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims dismissed			1
Wisconsin [Member] | Philip Morris 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