Contingencies (Appeals of Engle Progeny Judgments, Maryland and Only Liggett Cases) (Details)	1 Months Ended
	Mar. 31, 2012 case	Jul. 31, 1999 plaintiff	Mar. 31, 2018 case
Engle Progeny Cases
Loss Contingencies [Line Items]
Number of cases declined for review by supreme court	2
Number of plaintiffs | plaintiff		3
Individual Actions Cases
Loss Contingencies [Line Items]
Cases pending			28
Liggett
Loss Contingencies [Line Items]
Cases pending			2
Maryland | Liggett | Individual Actions Cases
Loss Contingencies [Line Items]
Cases pending			16