Contingencies (Federal Government's Lawsuit) (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended			6 Months Ended		12 Months Ended
	Dec. 31, 2011	Aug. 31, 2006	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2014	Jun. 30, 2017	Jun. 30, 2016	Dec. 31, 1999
Loss Contingencies [Line Items]
Loss contingency, amount of district court deposit			$ 17.0	$ 128.0		$ 18.0	$ 145.0
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
Disclosure period		10 years
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] | 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