Cost Reduction Plan (Summary Of Carrying Amount Of Accrual For Cost Reduction Plan) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Mar. 31, 2012
Cost Reduction Plan [Line Items]
2012 Charge	$ 86.8
Noncash expenses	(6.4)
Amount reflected in pension liability	(6.8)
Cash expenditures	(7.8)
Currency translation adjustment	0.6
Accrued balance	66.4
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	(7.8)
Currency translation adjustment	0.6
Accrued balance	66.4
Asset Impairments [Member]
Cost Reduction Plan [Line Items]
2012 Charge	6.0
Noncash expenses	$ (6.0)