Contingencies (2003-2014 NPM Adjustment Disputes - Settlement with 26 States and Territories and Settlement with New York) (Details)	1 Months Ended		3 Months Ended					12 Months Ended
	Apr. 30, 2017 USD ($) plantiff	Nov. 30, 1998 USD ($) state	Jun. 30, 2017 USD ($) plantiff	Mar. 31, 2017 USD ($) state	Dec. 31, 2016 USD ($)	Mar. 31, 2016 USD ($)	Sep. 30, 2015 USD ($)	Dec. 31, 2016 USD ($) plantiff	Jun. 30, 2016 USD ($)
Loss Contingencies [Line Items]
Litigation settlement, amount						$ 1,200,000,000
Other liabilities				$ 431,000,000	$ 427,000,000			$ 427,000,000
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Number of states with settled litigation | state		46
Litigation settlement, amount				1,100,000,000
State Settlement Agreements annual payments		$ 9,400,000,000
State Settlement Agreements attorney fees annual cap		$ 500,000,000
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				$ 702,000,000
Number of motions denied without appeal | state				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
PM USA [Member] | Health Care Cost Recovery Actions, 2015 NPM Adjustments [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Other liabilities									$ 43,000,000
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								$ 126,000,000
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				$ 32,000,000	$ 58,000,000		$ 126,000,000
Subsequent Event [Member] | PM USA [Member] | Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Loss contingency, number of states | plantiff	52
Subsequent Event [Member] | PM USA [Member] | Health Care Cost Recovery Actions [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Number of states with settled litigation | plantiff			26
Subsequent Event [Member] | PM USA [Member] | Health Care Cost Recovery Actions [Member] | Settled Litigation [Member] | RHODE ISLAND [Member]
Loss Contingencies [Line Items]
Litigation settlement, additional amount			$ 9,000,000
Subsequent Event [Member] | PM USA [Member] | Health Care Cost Recovery Actions [Member] | Settled Litigation [Member] | OREGON [Member]
Loss Contingencies [Line Items]
Litigation settlement, additional amount			16,000,000
Subsequent Event [Member] | 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	$ 4,000,000
Subsequent Event [Member] | 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			25,000,000
Subsequent Event [Member] | 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, reduction in payment	44,000,000
Subsequent Event [Member] | 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	$ 2,000,000
Scenario, Forecast [Member] | PM USA [Member] | Health Care Cost Recovery Actions, 2015 NPM Adjustments [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Other liabilities			$ 46,000,000