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								36 Months Ended
	Dec. 31, 2015 USD ($)	Jun. 30, 2015 state	Apr. 30, 2014 USD ($) state	Sep. 30, 2013 USD ($) state	Nov. 30, 1998 state	Mar. 31, 2016 USD ($) case plantiff	Dec. 31, 2015 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jun. 30, 2014 state	Mar. 31, 2014 USD ($)	Sep. 30, 2013 USD ($)	Jun. 30, 2013 USD ($)	Dec. 31, 2015 USD ($)	Feb. 29, 2016 USD ($)	May. 31, 2014 USD ($)
Loss Contingencies [Line Items]
Earnings (loss) before income taxes						$ 1,883		$ 1,562
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Litigation settlement, amount						18
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)
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
Earnings (loss) before income taxes													$ 36
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] | MISSOURI | Pending Litigation [Member]
Loss Contingencies [Line Items]
Estimate of possible interest income						(18)
Amount of possible interest loss						7
Amount of possible loss						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