Contingencies (Lights/Ultra Lights Cases) (Details)	Jul. 26, 2019 case court	Jul. 23, 2018 case	Jul. 24, 2017 case
Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending		3	4
Subsequent Event [Member] | Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	2
Subsequent Event [Member] | Lights [Member]
Loss Contingencies [Line Items]
Claims not certified, number	23
Subsequent Event [Member] | Lights [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of state courts | court	21