Contingencies (Other Smoking and Health Class Actions) (Details) - Smoking And Health Class Actions And Aggregated Claims Litigation [Member] $ in Billions	1 Months Ended	275 Months Ended
	Mar. 31, 2019 CAD ($) ruling manufacture	Mar. 31, 2019 case ruling manufacture	Apr. 22, 2019 case	Apr. 23, 2018 case	Apr. 27, 2017 case
Loss Contingencies [Line Items]
Number of cases pending				4	5
PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		61
ARKANSAS [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
CALIFORNIA [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
DELAWARE [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
DISTRICT OF COLUMBIA [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		2
Florida [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		2
ILLINOIS [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		3
IOWA [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
KANSAS [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
LOUISIANA [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
MARYLAND [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
MICHIGAN [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
MINNESOTA [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
NEVADA [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		29
NEW JERSEY [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		6
NEW YORK [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		2
OHIO [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
OKLAHOMA [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
OREGON [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
PENNSYLVANIA [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
PUERTO RICO [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
SOUTH CAROLINA [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
TEXAS [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
WISCONSIN [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Class not certified		1
CANADA [Member] | Canadian Tobacco Manufacturers [Member]
Loss Contingencies [Line Items]
Number of manufacturers | manufacture	3	3
Number of verdicts upheld | ruling	2	2
Amount awarded to other party | $	$ 13
Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending			2
Subsequent Event [Member] | CANADA [Member] | Philip Morris USA and Altria Group [Member]
Loss Contingencies [Line Items]
Number of cases pending			7
Subsequent Event [Member] | BRITISH COLUMBIA and SASKATCHEWAN [Member] | Philip Morris USA and Altria Group [Member]
Loss Contingencies [Line Items]
Number of cases pending			2