Contingencies (2003-2015 NPM Adjustment Disputes - Settlement with 26 States and Territories and Settlement with New York) (Details)	1 Months Ended				3 Months Ended							9 Months Ended		12 Months Ended
	Apr. 30, 2017 USD ($)	Feb. 29, 2016 USD ($)	Sep. 30, 2013 state	Nov. 30, 1998 state	Sep. 30, 2017 USD ($) state plantiff	Jun. 30, 2017 USD ($)	Mar. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2017 USD ($) state	Sep. 30, 2016 USD ($)	Dec. 31, 2016 USD ($) plantiff	Dec. 31, 2015 USD ($)	Dec. 31, 2003 USD ($)	Jun. 30, 2016 USD ($)
Loss Contingencies [Line Items]
Other liabilities					$ 372,000,000			$ 427,000,000				$ 372,000,000		$ 427,000,000
Health Care Cost Recovery Actions [Member]
Loss Contingencies [Line Items]
Litigation settlement					$ 1,100,000,000				$ 1,200,000,000			3,400,000,000	$ 3,600,000,000
Number of states with settled litigation | state				46
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]
Litigation settlement												$ 702,000,000
Number of states with settled litigation | plantiff					26									24
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						$ 9,000,000
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
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						2,000,000
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
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														$ 126,000,000
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					$ 77,000,000		$ 25,000,000
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							$ 32,000,000	$ 58,000,000		$ 126,000,000
Litigation settlement, reduction in payment	$ 44,000,000
PM USA [Member] | Health Care Cost Recovery Actions, 2015 NPM Adjustments [Member] | Settled Litigation [Member]
Loss Contingencies [Line Items]
Other liabilities						$ 46,000,000											$ 43,000,000
PM USA [Member] | Health Care Cost Recovery Actions, 2015 NPM Adjustments [Member] | Pending Litigation [Member] | NEW YORK [Member]
Loss Contingencies [Line Items]
Litigation settlement															$ 0
PM USA [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | Pending Litigation [Member]
Loss Contingencies [Line Items]
Litigation settlement																$ 145,000,000
Loss contingency, number of states | state			15
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											$ 145,000,000
PM USA [Member] | Health Care Cost Recovery Actions, 2003 NPM Adjustment [Member] | Pending Litigation [Member] | MARYLAND [Member] | Cost of Sales [Member]
Loss Contingencies [Line Items]
Litigation settlement		$ (12,000,000)