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			9 Months Ended
	Oct. 31, 2015 USD ($)	Sep. 30, 2013 state	Nov. 30, 1998 state	Sep. 30, 2016 USD ($) state	Sep. 30, 2015 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2016 USD ($) state plantiff	Sep. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)
Loss Contingencies [Line Items]
Other liabilities				$ 412			$ 412			$ 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)	$ (1,100)		(3,600)	$ (3,300)
Health Care Cost Recovery Actions, 2004-2014 NPM Adjustment [Member] | Cost of Sales [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount					126		$ (12)	$ 126
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 [Member] | 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 [Member]
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