Segment Reporting (Schedule of Pre-tax Tobacco and Health Litigation Charges) (Details) - Tobacco and Health Litigation Cases [Member] - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 105	$ 150	$ 44
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	88	127	27
General and Administrative Expense [Member] | Corporate, Non-Segment [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	0	0	15
Interest And Other Debt Expense, Net [Member]
Schedule of Pre-tax Tobacco and Health Litigation Charges [Line Items]
Provision related to litigation recorded	$ 17	$ 23	$ 2