Segment Reporting (Schedule of Pre-tax Tobacco and Health Litigation Items) (Details) - Tobacco and Health Litigation Cases [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Segment Reporting Information [Line Items]
Provision related to litigation recorded	$ 45	$ 67	$ 88	$ 115
Operating Segments [Member] | Smokeable Products [Member] | Operating Income (Loss) [Member]
Segment Reporting Information [Line Items]
Provision related to litigation recorded	45	54	72	102
Segment Reconciling Items [Member] | Interest And Other Debt Expense, Net [Member]
Segment Reporting Information [Line Items]
Provision related to litigation recorded	$ 0	$ 13	$ 16	$ 13