Contingencies (Scott Class Action Narrative) (Details) (USD $)	1 Months Ended		3 Months Ended		3 Months Ended
	Dec. 31, 2012 Louisiana/Scott [Member]	Aug. 31, 2011 Smoking And Health Class Actions And Aggregated Claims Litigation [Member]	Jun. 30, 2011 Smoking And Health Class Actions And Aggregated Claims Litigation [Member] Louisiana/Scott [Member]	Mar. 31, 2013 Smoking And Health Class Actions And Aggregated Claims Litigation [Member] Louisiana/Scott [Member]	Jun. 30, 2011 Previously Recorded [Member] Smoking And Health Class Actions And Aggregated Claims Litigation [Member] Louisiana/Scott [Member]
Loss Contingencies [Line Items]
Compensatory damages jury award total excluding interest				$ 590,000,000
Share of judgment paid		70,000,000
Loss contingency, damages recorded			36,000,000		30,000,000
Loss contingency, interest accrued			5,000,000
Loss Contingency, Attorney Fees Paid from Court Supervised Fund	$ 103,000,000