Income Taxes (Narrative) (Details) In Millions, except Per Share data, unless otherwise specified	12 Months Ended				12 Months Ended			3 Months Ended	12 Months Ended	3 Months Ended
	Sep. 30, 2012 USD ($)	Sep. 30, 2011 USD ($)	Sep. 30, 2010 USD ($)	Sep. 30, 2009 USD ($)	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 ($)	Jun. 30, 2011 U S Healthcare Business [Member] USD ($)
Income Taxes [Line Items]
Operating loss carryforwards, state and local	$ 311.2
Operating loss carryforwards, foreign	170.6
Operating loss carryforward expiration periods range	between fiscal year 2013 and 2032
Valuation alowance, deferred tax asset, change in amount	8.0
Deferred tax assets, valuation allowance	36.6	28.6
Income tax payments, net of refunds	255.7	159.9	190.7
Cumulative undistributed earnings	5,278.2
Percentage of the undistributed earnings in countries with a statutory tax rate of 24% or higher	90.00%
Statutory tax rate percentage or higher	24.00%
US Income and foreign withholding taxes estimate	1,332.5
Unrecognized tax benefits	110.8	126.4	197.8	163.1
Unrecognized tax benefits that would impact effective tax rate	56.9	93.1
Interest and penalties related to unrecognized tax benefits	(26.1)	(2.4)	5.5
Accrued interest and penalties	7.2	33.3
Increase (decrease) in income tax expense					43.8			(58.3)			(23.9)
Increase (decrease) in income tax expense, per share					$ 0.20			$ (0.27)
Increase (decrease) in unrecognized tax benefit										33.3	(36.0)
Unrecognized tax benefits, decreases resulting from prior period tax positions	46.9	72.4	1.0		6.4				38.3
Unrecognized tax benefits,decreases resulting from settlements with taxing authorities	11.0	15.6	0		11.0
Discontinued operations, tax benefit											8.9
Discontinued operations, tax benefit, per share											$ 0.04
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%