Asset Impairment, Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	$ 2	$ 0	$ 123	$ 4
General corporate [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	0	$ 0	5	$ 0
Productivity Initiative [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	2		123
Implementation Costs	4		7
Total	6		130
Termination and curtailment costs			20
Productivity Initiative [Member] | Operating Segments [Member] | Smokeable Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	1		99
Implementation Costs	3		6
Total	4		105
Productivity Initiative [Member] | Operating Segments [Member] | Smokeless Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	0		13
Implementation Costs	1		1
Total	1		14
Productivity Initiative [Member] | Operating Segments [Member] | All Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	1		6
Implementation Costs	0		0
Total	1		6
Productivity Initiative [Member] | General corporate [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment and Exit Costs	0		5
Implementation Costs	0		0
Total	$ 0		$ 5