Asset Impairment, Exit and Implementation Costs (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended					3 Months Ended	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2012 2011 Cost Reduction Program [Member]	Sep. 30, 2012 2011 Cost Reduction Program [Member]	Sep. 30, 2012 2011 Cost Reduction Program [Member] Smokeable Products [Member]	Sep. 30, 2012 2011 Cost Reduction Program [Member] Smokeable Products [Member]	Sep. 30, 2012 2011 Cost Reduction Program [Member] Marketing, Adminstration and Research Costs [Member]	Sep. 30, 2013 2011 Cost Reduction Program [Member] Marketing, Adminstration and Research Costs [Member] Smokeable Products [Member]	Sep. 30, 2013 Asset Impairement and Exit Costs [Member] 2011 Cost Reduction Program [Member] Smokeable Products [Member]	Dec. 31, 2012 Employee Severance [Member] 2011 Cost Reduction Program [Member]	Sep. 30, 2012 Pre-tax Implementation (Gain) Costs [Member] 2011 Cost Reduction Program [Member] Marketing, Adminstration and Research Costs [Member]	Sep. 30, 2012 Pre-tax Implementation (Gain) Costs [Member] 2011 Cost Reduction Program [Member] Marketing, Adminstration and Research Costs [Member]	Sep. 30, 2012 Pre-tax Implementation (Gain) Costs [Member] 2011 Cost Reduction Program [Member] Cost of Sales [Member]
Restructuring Cost and Reserve [Line Items]
Asset impairment and exit costs	$ 0	$ 10	$ 1	$ 47	$ 10	$ 47	$ 1	$ 24			$ 1
Implementation (gain) costs					1	(7)	1	(11)		1			1	(15)	8
Curtailment (gain) included in marketing, administration and research costs									(26)
Severance liability												$ 37