Segment Reporting (Narrative) (Details) (PM USA [Member], Smokeable Products [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		3 Months Ended
	Jun. 30, 2013 Non-Participating Manufacturer Adjustment Settlement [Member]	Mar. 31, 2013 Non-Participating Manufacturer Adjustment Settlement [Member]	Sep. 30, 2013 Non-Participating Manufacturer Adjustment Settlement [Member]	Sep. 30, 2013 NPM Adjustment to Cost Of Sales [Member] Non-Participating Manufacturer Adjustment Items [Member]	Sep. 30, 2013 NPM Adjustment to Cost Of Sales [Member] Non-Participating Manufacturer Arbitration Panel Decision [Member]
Segment Reporting Information [Line Items]
Credit for settlement of dispute	$ 36	$ 483	$ 519	$ 664	$ 145