Contingencies (2003-2014 NPM Adjustment Disputes - Continuing Disputes with Non-Signatory States other than New York) (Details) $ in Millions	1 Months Ended					3 Months Ended							6 Months Ended
	Dec. 31, 2015 USD ($)	Jun. 30, 2015 state	Apr. 30, 2014 USD ($) state	Sep. 30, 2013 USD ($) state	Nov. 30, 1998 state	Jun. 30, 2016 USD ($)	Dec. 31, 2015 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jun. 30, 2014 state	Mar. 31, 2014 USD ($)	Sep. 30, 2013 USD ($)	Jun. 30, 2016 USD ($) case plantiff	Jun. 30, 2015 USD ($)	Feb. 29, 2016 USD ($)	May 31, 2014 USD ($)
Loss Contingencies [Line Items]
Litigation settlement, amount													$ 18
Earnings (loss) before income taxes						$ 2,534		$ 2,254					4,417	$ 3,816
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 [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Loss contingency, number of states | plantiff													52
Health Care Cost Recovery Actions [Member] | PM USA [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount													$ (599)
Number of states with settled litigation | plantiff													24
Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Settlement agreement, liability reduction percentage													20.00%
Loss contingency, number of states | state				15
Number of states that did not diligently enforcing escrow statutes | state				6
Number of states diligently enforcing escrow statute | state				9
Litigation settlement, amount												$ (145)
Estimate of possible interest income				$ 89
Estimate of possible gain, not recorded													$ 25
Litigation settlement interest expense (income)											$ 64
Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member] | Indiana and Kentucky [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Number of states with settled litigation | state										2
Litigation settlement interest expense (income)												17
Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member] | Maryland, Missouri, New Mexico and Pennsylvania [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of states that did not diligently enforcing escrow statutes | state			4
Estimate of possible interest income									$ 66
Litigation settlement interest expense (income)	$ 48		$ 66						$ 47
Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member] | PENNSYLVANIA | Settled Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement interest expense (income)							$ 13
Earnings (loss) before income taxes							42
Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member] | MARYLAND | Pending Litigation [Member]
Loss Contingencies [Line Items]
Amount of possible loss															$ 12
Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member] | MISSOURI | Pending Litigation [Member]
Loss Contingencies [Line Items]
Amount of possible interest loss						7							7
Amount of possible loss						$ 12							12
Appeal bond posted																$ 22
Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member] | Cost of Sales [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount												(145)
Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member] | Cost of Sales [Member] | Indiana and Kentucky [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount												$ (37)
Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member] | Cost of Sales [Member] | Maryland, Missouri, New Mexico and Pennsylvania [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount	$ (79)		$ (108)
Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | PM USA [Member] | Cost of Sales [Member] | PENNSYLVANIA | Pending Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount							$ 29
Health Care Cost Recovery Actions, 2004-2015 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Amount of possible interest loss															$ 7
Health Care Cost Recovery Actions, 2004-2015 NPM Adjustment [Member] | Cost of Sales [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount													12
Health Care Cost Recovery Actions, 2004 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													388
Health Care Cost Recovery Actions, 2004 NPM Adjustment [Member] | PM USA [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Number of states with pending litigation | state		17
Health Care Cost Recovery Actions, 2005 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													181
Health Care Cost Recovery Actions, 2006 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													154
Health Care Cost Recovery Actions, 2007 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													185
Health Care Cost Recovery Actions, 2008 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													250
Health Care Cost Recovery Actions, 2009 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													211
Health Care Cost Recovery Actions, 2010 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													218
Health Care Cost Recovery Actions, 2011 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													166
Health Care Cost Recovery Actions, 2012 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													210
Health Care Cost Recovery Actions, 2013 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													218
Health Care Cost Recovery Actions, 2013 NPM Adjustment [Member] | PM USA [Member] | Cost of Sales [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount													(38)
Health Care Cost Recovery Actions, 2014 NPM Adjustment [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													241
Health Care Cost Recovery Actions, 2014 NPM Adjustment [Member] | PM USA [Member] | Cost of Sales [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount													(41)
Health Care Cost Recovery Actions, 2015 NPM Adjustments [Member]
Loss Contingencies [Line Items]
Estimate of possible gain													$ 289
Other MSA-Related Litigation [Member]
Loss Contingencies [Line Items]
Number of unfavorable verdicts | case													16