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Segment Reporting (Narrative) (Details) (Non-Participating Manufacturer Adjustment Settlement [Member], PM USA [Member], Smokeable Products [Member], USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2014
Jun. 30, 2013
Mar. 31, 2013
Segment Reporting Information [Line Items]      
NPM Adjustment Items $ 35 $ 36 $ 483
NPM Adjustment to Cost Of Sales [Member]
     
Segment Reporting Information [Line Items]      
NPM Adjustment Items     $ 483