Cost Reduction Plan (Carrying Amount of Accrual) (Details) (USD $) In Millions, unless otherwise specified	9 Months Ended
	Jun. 30, 2012
Cost Reduction Plan [Line Items]
2012 Charge	$ 86.8
Noncash expenses	(6.4)
Amount reflected in pension liability	(6.8)
Cash expenditures	(21.2)
Currency translation adjustment	(2.1)
Accrued Balance	50.3
Severance And Other Benefits [Member]
Cost Reduction Plan [Line Items]
2012 Charge	80.8
Noncash expenses	(0.4)
Amount reflected in pension liability	(6.8)
Cash expenditures	(21.2)
Currency translation adjustment	(2.1)
Accrued Balance	50.3
Asset Impairments [Member]
Cost Reduction Plan [Line Items]
2012 Charge	6.0
Noncash expenses	(6.0)
Amount reflected in pension liability	0
Cash expenditures	0
Currency translation adjustment	0
Accrued Balance	$ 0