Contingencies (Engle Class Action And Engle Progeny Trial Results Narrative) (Details) $ in Millions		1 Months Ended						3 Months Ended			9 Months Ended		12 Months Ended
	Oct. 26, 2015 cases	Mar. 31, 2015 USD ($)	Feb. 28, 2015 cases	Sep. 30, 2014 cases	Feb. 29, 2008 USD ($)	Jul. 31, 2006 USD ($) plantiff	May. 31, 2001 USD ($)	Sep. 30, 2015 USD ($) cases	Mar. 31, 2015 USD ($) cases	Sep. 30, 2014 USD ($)	Sep. 30, 2015 USD ($) cases	Sep. 30, 2014 USD ($)	Dec. 31, 2008 court	Jun. 30, 2014 cases	Mar. 31, 2014 cases	Jun. 30, 2009 USD ($)	Jul. 31, 2000 USD ($)
Loss Contingencies [Line Items]
Payments made related to litigation | $								$ 3.0		$ 0.0	$ 13.0	$ 4.0
Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Number of cases with petitions for writ of certiorari															8
Number of cases with petitions for writ of certiorari denied														11
Punitive damages awarded | $																	$ 145,000.0
Number of claims dismissed				750
Engle Progeny Cases [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of cases with petitions for writ of certiorari															1
Punitive damages awarded | $																	$ 74,000.0
Amounts placed in escrow | $							$ 500.0
Period for members of decertified class to file individual actions against defendants						1 year
Engle Progeny Cases, State [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of claims resolved								6
Engle Progeny Cases, Federal [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Amounts placed in escrow | $		$ 43.0
Number of claims resolved			415						415
Pre-tax charges | $									$ 43.0
Subsequent Event [Member] | Engle Progeny Cases [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of cases pending	2
Number of verdicts returned	87
Number of unfavorable verdicts	47
Number of favorable verdicts	38
Subsequent Event [Member] | Engle Progeny Cases, State [Member]
Loss Contingencies [Line Items]
Number of cases pending	3,070
Number of plaintiffs	4,050
Subsequent Event [Member] | Engle Progeny Cases, State [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of favorable verdicts	29
Subsequent Event [Member] | Engle Progeny Cases, Federal [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Number of cases pending	460
Number of favorable verdicts	9
FLORIDA | Engle Progeny Cases [Member]
Loss Contingencies [Line Items]
Number of district courts with rulings | court													3
Number of rulings certified by trial court for interlocutory review | court													2
FLORIDA | Engle Progeny Cases, State [Member]
Loss Contingencies [Line Items]
Florida bond cap | $																$ 200.0
FLORIDA | Engle Progeny Cases, State [Member] | PM USA [Member]
Loss Contingencies [Line Items]
Compensatory damages awarded | $						$ 6.9
Number of individual plaintiffs reinstated | plantiff						2
Payments made related to litigation | $					$ 3.0
Escambia County, Florida [Member] | Engle Progeny Cases, State [Member]
Loss Contingencies [Line Items]
Number of cases in which plaintiffs that challenged constitutionality of bond cap statute											1
Alachua County, Florida [Member] | Engle Progeny Cases, State [Member]
Loss Contingencies [Line Items]
Number of cases in which plaintiffs that challenged constitutionality of bond cap statute											3