Asset Impairment, Exit and Implementation Costs (Pre-tax Asset Impairment, Exit and Implementation Costs) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	$ 120	$ 0
Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	(5)	$ 0
Productivity Initiative [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	120
Implementation Costs	2
Total restructuring charges	122
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	97
Implementation Costs	2
Total restructuring charges	99
Productivity Initiative [Member] | Operating Segments [Member] | Smokeless Products [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	13
Implementation Costs	0
Total restructuring charges	13
Productivity Initiative [Member] | Operating Segments [Member] | All Other [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	5
Implementation Costs	0
Total restructuring charges	5
Productivity Initiative [Member] | Corporate, Non-Segment [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	5
Implementation Costs	0
Total restructuring charges	$ 5