Segment Reporting (Schedule of Tobacco and Health Litigation Items) (Details) - Tobacco and Health Litigation Cases [Member] - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 24	$ 17
Segment Reconciling Items [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	2	2
PM USA [Member] | Operating Segments [Member] | Smokeable Products Segment [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 22	$ 15