Business Segment Information (Details Textuals) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Segment Reporting Information [Line Items]
Identifiable assets	$ 5,636.5	$ 5,284.9	$ 4,748.3
Business Segment information (Textuals) [Abstract]
Portion of total sales to largest distributor	10.00%	10.00%	10.00%
Corporate [Member]
Segment Reporting Information [Line Items]
Identifiable assets	1,717.4	1,560.4	1,612.4
Capital expenditures for property	59.7	53.8	39.8
Corporate [Member] | Shared by segments and used in operating activities [Member]
Segment Reporting Information [Line Items]
Identifiable assets	318.0	315.7	293.2
Capital expenditures for property	$ 59.7	$ 53.8	$ 39.1