Income Taxes (Narrative) (Details) In Millions, except Per Share data, unless otherwise specified	3 Months Ended	12 Months Ended				12 Months Ended						3 Months Ended	12 Months Ended	3 Months Ended		12 Months Ended			12 Months Ended		12 Months Ended
	Sep. 30, 2014 USD ($)	Sep. 30, 2014 USD ($)	Sep. 30, 2013 USD ($)	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2014 Chilean Tax Rate Change [Member] USD ($)	Sep. 30, 2012 Chilean Tax Rate Change [Member]	Sep. 30, 2014 Non-U.S. Subsidiary Tax Election [Member] USD ($)	Sep. 30, 2012 Spanish Tax Settlement [Member] USD ($)	Nov. 30, 2011 Spanish Tax Settlement [Member] USD ($)	Nov. 30, 2011 Spanish Tax Settlement [Member] EUR (€)	Mar. 31, 2012 Spanish Tax Ruling [Member] USD ($)	Sep. 30, 2012 Spanish Tax Ruling [Member] USD ($)	Jun. 30, 2012 European Homecare Business [Member] USD ($)	Sep. 30, 2014 Federal [Member] USD ($)	Sep. 30, 2014 Federal [Member] Capital Loss Carryforward [Member] USD ($)	Sep. 30, 2014 Federal [Member] Tax Credit Carryforward [Member]	Sep. 30, 2014 Foreign [Member] USD ($)	Sep. 30, 2014 Foreign [Member] Loss and Tax Credit Member [Member]	Sep. 30, 2014 State [Member] USD ($)	Sep. 30, 2014 State [Member] Loss and Tax Credit Member [Member]
Income Taxes [Line Items]
Effective income tax rate reconciliation, change in enacted tax rate						1.50%	1.10%
Income tax payments, net of refunds		$ 160.6	$ 325.5	$ 255.7
Increase (decrease) in income tax expense								(51.6)	43.8			(58.3)
Increase (decrease) in income tax expense, per share									$ 0.2			$ (0.27)
Income tax expense from recent tax reform						20.6
Goodwill impairment charge	305.2	305.2	0
Goodwill impairment charge deductible for tax purposes		0
Capital loss carryforwards															156.9
Tax credit carryforwards															30.1			44.0		4.0
Operating loss carryforwards																		228.3		372.2
Tax credits and other tax carryforwards	78.1	78.1	66.6
Tax carryforward expiration period start																	2023		2015		2015
Tax carryforward expiration period end																2019	2033		2030		2034
Unused carryforwards and credits that have an expiration period																		162.5
Valuation allowance related to loss carryforwards																		40.6
Deferred tax assets, valuation allowance	103.8	103.8	44.7													53.9
Cumulative undistributed earnings	5,894.2	5,894.2
Percentage of the undistributed earnings in countries with a statutory tax rate of 24% or higher	80.00%	80.00%
Statutory tax rate percentage or higher	24.00%	24.00%
US Income and foreign withholding taxes estimate	1,466.2	1,466.2
Unrecognized tax benefits	108.7	108.7	124.3	110.8	126.4
Unrecognized tax benefits that would impact effective tax rate	66.5	66.5	63.1
Interest and penalties related to unrecognized tax benefits		1.2	2.4	(26.1)
Accrued interest and penalties	9.3	9.3	8.1
Increase (decrease) in unrecognized tax benefit														33.3
Unrecognized tax benefits, decreases resulting from prior period tax positions		14.6	0.5	46.9					6.4				38.3
Unrecognized tax benefits,decreases resulting from settlements with taxing authorities		0	1.4	11.0					11.0
Income tax settlement										$ 56.0	€ 41.3
Impact on effective income tax rate due to tax ruling													(4.40%)
Impact on effective income tax rate due to settlement									3.30%