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
	Sep. 30, 2013 state	Nov. 30, 1998 state	Jun. 30, 2016 USD ($) state	Sep. 30, 2015 USD ($)	Jun. 30, 2015 USD ($)	Sep. 30, 2013 USD ($)	Jun. 30, 2016 USD ($) state plantiff	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Loss Contingencies [Line Items]
Litigation settlement, amount							$ (18)
Other liabilities			$ 415				415		$ 447
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of states with settled litigation | state		46
Health Care Cost Recovery Actions [Member] | Cost of Sales [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount			$ (1,200)		$ (1,200)		(2,300)	$ (2,300)
Health Care Cost Recovery Actions, 2004-2014 NPM Adjustment [Member] | Cost of Sales [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount							$ (12)
PM USA [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Loss contingency, number of states | plantiff							52
PM USA [Member] | Health Care Cost Recovery Actions [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Number of states with settled litigation | plantiff							24
Litigation settlement, amount							$ 599
Number of motions denied without appeal | state			1				1
PM USA [Member] | Health Care Cost Recovery Actions [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of states with filed motion | state			14				14
PM USA [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Loss contingency, number of states | state	15
Litigation settlement, amount						$ 145
PM USA [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | Pending Litigation [Member] | Cost of Sales [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount						$ 145
PM USA [Member] | Health Care Cost Recovery Actions, 2004-2014 NPM Adjustment [Member] | Settled Litigation [Member] | NEW YORK | Cost of Sales [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount				$ 126
PM USA [Member] | Health Care Cost Recovery Actions, 2004-2014 NPM Adjustment [Member] | Pending Litigation [Member] | NEW YORK
Loss Contingencies [Line Items]
Litigation settlement, amount				$ 126
PM USA [Member] | Health Care Cost Recovery Actions, 2013 NPM Adjustment [Member] | Settled Litigation [Member] | Cost of Sales [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount							$ 38
PM USA [Member] | Health Care Cost Recovery Actions, 2014 NPM Adjustment [Member] | Settled Litigation [Member] | Cost of Sales [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount							41
PM USA [Member] | Health Care Cost Recovery Actions, 2015 NPM Adjustments [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Other liabilities			$ 43				$ 43