Contingencies (Lights/Ultra Lights Cases) (Details)	Apr. 23, 2018 case court	Apr. 27, 2017 case	Apr. 25, 2016 case
Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending		5	11
Lights Ultra Lights Class Actions [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending	3
Lights [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Claims not certified, number	22
Lights [Member] | PM USA [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of state courts | court	21