Contingencies MSA Term Sheet Agreement (Narrative) (Details) (USD $)	0 Months Ended	12 Months Ended	3 Months Ended
	Dec. 17, 2012	Dec. 31, 2012	Mar. 31, 2013 NPM Adjustment to Cost Of Sales [Member] Smokeable Products [Member]
Loss Contingencies [Line Items]
Number of States Joining Term Sheet	17
Percentage of Signatory States Allocable Share of OPM Aggregate 2003-2012 NPM Adjustments Reduction of Future MSA Payments		46.00%
Affiliate Share of Future MSA Payment Reductions		28.00%
Affiliate Approximate Amount of Future MSA Payment Reductions			$ 483,000,000
Disputed Payment Account (DPA) Balance		4,700,000,000
Affiliate Payments to DPA Account		658,000,000
Amount of Affiliate Funds Released from DPA to Signatory States		$ 272,000,000