Contingencies (2003-2014 NPM Adjustment Disputes - Settlement with 24 States and Territories and Settlement with New York) (Details) $ in Millions	1 Months Ended		3 Months Ended							6 Months Ended	9 Months Ended		33 Months Ended
	Sep. 30, 2013 state	Nov. 30, 1998 state	Sep. 30, 2015 USD ($) state	Sep. 30, 2014 USD ($)	Jun. 30, 2014 USD ($)	Mar. 31, 2014 USD ($)	Sep. 30, 2013 USD ($) state	Jun. 30, 2013 USD ($)	Mar. 31, 2013 USD ($)	Jun. 30, 2013 USD ($)	Sep. 30, 2015 USD ($) state plantiff	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) state
Loss Contingencies [Line Items]
Earnings (loss) before income taxes			$ 2,289	$ 2,114							$ 6,105	$ 5,865
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of states with settled litigation | state		46
Litigation settlement, amount			$ 126	0							$ 126	90
Health Care Cost Recovery Actions [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Loss contingency, number of states | plantiff											52
Settled Litigation [Member] | Health Care Cost Recovery Actions [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of states with settled litigation | plantiff											24
Earnings (loss) before income taxes								$ 36	$ 483
Litigation settlement, amount													$ 599
Pending Litigation [Member] | Health Care Cost Recovery Actions [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of states with filed motion | state			14								14		14
Pending Litigation [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Loss contingency, number of states | state	15
Litigation settlement, amount							$ 145
Litigation settlement interest expense (income)						$ (64)
Cost of Sales [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount			$ (1,100)	$ (1,200)							$ (3,300)	(3,500)
Cost of Sales [Member] | Settled Litigation [Member] | Health Care Cost Recovery Actions [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount										$ 519
Cost of Sales [Member] | Settled Litigation [Member] | Health Care Cost Recovery Actions, 2013 NPM Adjustment [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount						$ 35					3
Cost of Sales [Member] | Settled Litigation [Member] | Health Care Cost Recovery Actions, 2014 NPM Adjustment [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount											41
Cost of Sales [Member] | Pending Litigation [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount							$ 145
NEW YORK | Settled Litigation [Member] | Health Care Cost Recovery Actions, 2004-2014 NPM Adjustment [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount			126								$ 126	$ 43
NEW YORK | Cost of Sales [Member] | Settled Litigation [Member] | Health Care Cost Recovery Actions, 2004-2014 NPM Adjustment [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount			$ 126
Indiana and Kentucky [Member] | Settled Litigation [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of states with settled litigation | state							2
Earnings (loss) before income taxes					$ 26		$ 54
Litigation settlement, amount					80
Litigation settlement interest expense (income)					17		(17)
Indiana and Kentucky [Member] | Cost of Sales [Member] | Settled Litigation [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount					$ 43		$ 37