Business Segment And Geographic Information (Schedule Of Geographic Information) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012	Mar. 31, 2011
Segment Reporting Information [Line Items]
Sales to External Customers	$ 2,344.3	$ 2,403.0	$ 4,665.8	$ 4,695.5
North America [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	1,117.6	1,194.1	2,215.8	2,320.0
Europe [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	626.8	645.3	1,230.0	1,277.6
Asia [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	547.4	498.3	1,120.7	979.7
Latin America/Other [Member]
Segment Reporting Information [Line Items]
Sales to External Customers	$ 52.5	$ 65.3	$ 99.3	$ 118.2