Contingencies (Federal Government's Lawsuit Narrative) (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended			9 Months Ended
	Dec. 31, 2011	Sep. 30, 2015	Sep. 30, 2014	Jun. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Loss Contingencies [Line Items]
Loss contingency, amount of district court deposit		$ 3.0	$ 0.0		$ 13.0	$ 4.0
Federal Governments Lawsuit [Member]
Loss Contingencies [Line Items]
Amount of alleged annual costs health care programs, minimum					20,000.0
Damages sought, value					280,000.0
Federal Governments Lawsuit [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Loss contingency, amount of district court deposit	$ 3.1
Loss contingency installment period, years	5 years
Implementation of Corrective Communications [Member]
Loss Contingencies [Line Items]
Provision related to litigation recorded		$ 0.0	$ 0.0		$ 0.0	$ 31.0
Implementation of Corrective Communications [Member] | Federal Governments Lawsuit [Member]
Loss Contingencies [Line Items]
Provision related to litigation recorded				$ 31.0
Implementation of Corrective Communications [Member] | Federal Governments Lawsuit [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Provision related to litigation recorded				$ 31.0