Asset Impairment, Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	$ 1	$ 4	$ 121	$ 4
Corporate, Non-Segment [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	1		121
Implementation Costs	1		3
Total restructuring charges	2		124
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		98
Implementation Costs	1		3
Total restructuring charges	2		101
Productivity Initiative [Member] | Operating Segments [Member] | Smokeless Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	0		13
Implementation Costs	0		0
Total restructuring charges	0		13
Productivity Initiative [Member] | Operating Segments [Member] | All Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	0		5
Implementation Costs	0		0
Total restructuring charges	0		5
Productivity Initiative [Member] | Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	0		5
Implementation Costs	0		0
Total restructuring charges	$ 0		$ 5