Contingencies (Health Care Cost Recovery - Lights/Ultra Lights Cases) (Details)	Jan. 29, 2019 case court	Dec. 31, 2018 case	Dec. 31, 2017 case	Dec. 31, 2016 case
Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending		2	3	8
Subsequent Event [Member] | Lights [Member]
Loss Contingencies [Line Items]
Claims not certified, number	23
Subsequent Event [Member] | Lights [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of state courts | court	21
Subsequent Event [Member] | Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	2