Segment Reporting (Schedule of Pre-tax Tobacco and Health Litigation Charges) (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 12	$ 21	$ 70	$ 28	$ 62	$ 0	$ 17	$ 1
Philip Morris USA [Member] | Tobacco and Health Litigation Cases [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded									$ 131	$ 80	$ 105
Philip Morris USA [Member] | Tobacco and Health Litigation Cases [Member] | Operating Income (Loss) [Member] | Operating Segments [Member] | Smokeable Products [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded									103	72	88
Philip Morris USA [Member] | Tobacco and Health Litigation Cases [Member] | Operating Income (Loss) [Member] | Operating Segments [Member] | Smokeless Products [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded									10	0	0
Philip Morris USA [Member] | Tobacco and Health Litigation Cases [Member] | Interest And Other Debt Expense, Net [Member] | Segment Reconciling Items [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded									$ 18	$ 8	$ 17