Contingencies (Schedule Of Pending Cases) (Parenthetical) (Details) (USD $) In Millions, unless otherwise specified	Apr. 23, 2012
Broin [Member]
Loss Contingencies [Line Items]
Broin plaintiff requested sanctions	$ 50
Flight Attendants [Member]
Loss Contingencies [Line Items]
Loss contingency pending claims, number not included	2,585
PM USA [Member]
Loss Contingencies [Line Items]
Loss contingency pending claims, number included	346
Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Number of plaintiffs	7,791
Engle Progeny Cases [Member] | Smoking And Health Class Actions And Aggregated Claims Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency pending claims, number not included	6,540
West Virginia Consolidated Proceeding [Member]
Loss Contingencies [Line Items]
Loss contingency pending claims, number included as one case	600
Federal Court [Member]
Loss Contingencies [Line Items]
Loss contingency pending claims, number not included	3,242
Federal Court [Member] | Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Number of plaintiffs	3,241
State Court [Member]
Loss Contingencies [Line Items]
Loss contingency pending claims, number not included	3,298
State Court [Member] | Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Number of plaintiffs	4,550