Contingencies (Smoking and Health Litigation - Non-Engle Progeny Litigation Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Oct. 31, 2017	Dec. 31, 2015
Non-Engle Progeny Smoking and Health Case, Gentile [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded		$ 7,100
Non-Engle Progeny Smoking and Health Case, Gentile [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded		$ 5,300
Compensatory damages award, allocation percentage		75.00%
Non-Engle Progeny Smoking and Health Case, Bullock [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded			$ 900
Provision for judgment plus interest and associated costs	$ 1,000