Contingencies (2003-2014 NPM Adjustment Disputes - Settlement with 26 States and Territories and Settlement with New York) (Details) $ in Millions	1 Months Ended		3 Months Ended					6 Months Ended		12 Months Ended
	Apr. 30, 2017 USD ($)	Nov. 30, 1998 state	Jun. 30, 2017 USD ($) state plantiff	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Jun. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Jun. 30, 2017 USD ($) state	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) plantiff
Loss Contingencies [Line Items]
Litigation settlement, amount			$ 1,200			$ 1,200		$ 2,300
Other liabilities			$ 394		$ 427			394		$ 427
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of states with settled litigation | state		46
Litigation settlement, amount									$ 2,300
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			26							24
Litigation settlement, amount								$ 702
Number of motions denied without appeal | state			1					1
PM USA [Member] | Health Care Cost Recovery Actions [Member] | Settled Litigation [Member] | RHODE ISLAND [Member]
Loss Contingencies [Line Items]
Litigation settlement, additional amount			$ 9
PM USA [Member] | Health Care Cost Recovery Actions [Member] | Settled Litigation [Member] | OREGON [Member]
Loss Contingencies [Line Items]
Litigation settlement, additional amount			$ 16
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, 2013-2014 Transition Years [Member] | Settled Litigation [Member] | RHODE ISLAND [Member]
Loss Contingencies [Line Items]
Litigation settlement, additional amount			$ 2
PM USA [Member] | Health Care Cost Recovery Actions, 2013-2015 Transition Years [Member] | Settled Litigation [Member] | OREGON [Member]
Loss Contingencies [Line Items]
Litigation settlement, additional amount			4
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] | RHODE ISLAND AND OREGON [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount				$ 25
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				$ 32	$ 58		$ 126
Litigation settlement, reduction in payment	$ 44
PM USA [Member] | Health Care Cost Recovery Actions, 2015 NPM Adjustments [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Other liabilities			$ 46			$ 43		$ 46	$ 43