Contingencies (Health Care Cost Recovery - Lights/Ultra Lights Cases) (Details) - case	Jan. 29, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending		3	8	11
Subsequent Event [Member] | Lights [Member]
Loss Contingencies [Line Items]
Claims not certified, number	22
Subsequent Event [Member] | Lights [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of state courts	21
Subsequent Event [Member] | Lights Ultra Lights Class Actions [Member]
Loss Contingencies [Line Items]
Number of cases pending	3