Contingencies (Smoking and Health Litigation - Engle Class Action, Engle Progeny Appellate Issues, Florida Bond Statute Narrative) (Details)		1 Months Ended				12 Months Ended			159 Months Ended
	Jan. 29, 2018 USD ($) case	Jun. 30, 2009 USD ($) case	Feb. 29, 2008 USD ($)	Jul. 31, 2006 USD ($) plantiff	May 31, 2001 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Dec. 31, 2015 USD ($) case	Dec. 31, 2017 USD ($)	Jul. 31, 2000 USD ($)
Loss Contingencies [Line Items]
Payments made related to litigation | $						$ 21,000,000	$ 190,000,000	$ 57,000,000
Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Punitive damages awarded | $										$ 145,000,000,000
Engle Progeny Cases [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Punitive damages awarded | $										$ 74,000,000,000
Amounts placed in escrow | $					$ 500,000,000
Period for members of decertified class to file individual actions against defendants				1 year
Engle Progeny Cases [Member] | Philip Morris USA [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of verdicts returned	116
Number of unfavorable verdicts	61
Number of favorable verdicts	45
Engle Progeny Cases, State [Member] | Florida [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded | $				$ 6,900,000
Florida bond cap | $		$ 200,000,000
Engle Progeny Cases, State [Member] | Alachua County, Florida [Member]
Loss Contingencies [Line Items]
Number of cases in which plaintiffs that challenged constitutionality of bond cap statute		3
Engle Progeny Cases, State [Member] | Escambia County, Florida [Member]
Loss Contingencies [Line Items]
Number of cases in which plaintiffs that challenged constitutionality of bond cap statute		1
Engle Progeny Cases, State [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending	2,400
Number of plaintiffs	3,100
Engle Progeny Cases, State [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Number of claims resolved								7
Engle Progeny Cases, State [Member] | Philip Morris USA [Member] | Florida [Member]
Loss Contingencies [Line Items]
Number of individual plaintiffs reinstated | plantiff				2
Payments made related to litigation | $			$ 3,000,000
Engle Progeny Cases, State [Member] | Philip Morris USA [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts	36
Engle Progeny Cases, D. Cohen and Collar [Member] | Philip Morris USA [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts	2
Engle Progeny Cases, Federal [Member] | Philip Morris USA [Member]
Loss Contingencies [Line Items]
Amounts placed in escrow | $								$ 43,000,000	$ 43,000,000
Number of claims resolved								415
Engle Progeny Cases, Federal [Member] | Philip Morris USA [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Number of cases pending	12
Engle Progeny Cases, Reider and Banks [Member] | Philip Morris USA [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Damages awarded, value | $	$ 0
Engle Progeny Cases, Weingart and Hancock [Member] | Philip Morris USA [Member] | Subsequent Event [Member]
Loss Contingencies [Line Items]
Damages awarded, value | $	$ 0