Segment Reporting (Schedule of Pre-tax Tobacco and Health Litigation Items) (Details) - Tobacco and Health Litigation Cases [Member] - USD ($) $ in Millions	3 Months Ended				6 Months Ended
	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015	Mar. 31, 2015	Jun. 30, 2016	Jun. 30, 2015
Schedule of Pre-tax Tobacco and Health Litigation Items [Line Items]
Provision related to litigation recorded	$ 5		$ 5		$ 43	$ 48
Operating Income (Loss) [Member] | Operating Segments [Member] | Smokeable Products [Member]
Schedule of Pre-tax Tobacco and Health Litigation Items [Line Items]
Provision related to litigation recorded	1	$ 26	5	$ 43	27	48
Interest And Other Debt Expense, Net [Member] | Segment Reconciling Items [Member]
Schedule of Pre-tax Tobacco and Health Litigation Items [Line Items]
Provision related to litigation recorded	$ 4	$ 12	$ 0		$ 16	$ 0