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	12 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012 2011 Cost Reduction Program [Member]	Sep. 30, 2012 2011 Cost Reduction Program [Member]	Sep. 30, 2012 2011 Cost Reduction Program [Member]	Sep. 30, 2011 Smokeable Products [Member]	Sep. 30, 2011 Smokeless Products [Member]	Sep. 30, 2011 Smokeless Products [Member]	Sep. 30, 2012 Other Costs [Member] 2011 Cost Reduction Program [Member]	Sep. 30, 2012 Net Gain [Member] Recorded in Marketing Administrative and research Costs [Member]
Restructuring Cost and Reserve [Line Items]
Asset Impairment And Restructuring Exit Costs	$ 0						$ 3
Cash payments since inception						117
Integration costs								1	3
Total net pre-tax restructuring charges expected to be incurred					300
Employee separation costs					220
Other restructuring costs, net					80					8
Pre-Tax Implementation (Gain) Costs			0	1	(7)						(15)
Curtailment (gain) included in marketing, administration and research costs					(26)
Net charges, inception to date		47				264
Cash payments for restructuring and implementation				$ 35	$ 108