Contingencies (Health Care Cost Recovery Litigation Narrative) (Details) (State Settlements Agreements [Member], Health Care Cost Recovery Actions [Member], USD $)	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Loss Contingencies [Line Items]
Loss contingency, period of occurrence	November 1998
State Settlement Agreements annual payments	$ 9,400,000,000
State Settlement Agreements attorney fees annual cap	500,000,000
Fair And Equitable Tobacco Reform Act Of2004 [Member]
Loss Contingencies [Line Items]
Aggregate Amount Recorded In Cost Of Sales Related To State Settlement Agreements And Federal Equitable Tobacco Reform Act	$ 600,000,000	$ 1,100,000,000