Capital Stock (Narrative) (Details) (USD $) In Millions, except Share data, unless otherwise specified	12 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Common shares as presented in the accompanying Consolidated Balance Sheets	30,247,512	30,147,504
Common shares in treasury	4,040,532	3,707,407
Board of Directors authorized an expanded stock repurchase program	$ 100
Stock repurchases during period, shares	350,000	270,000	150,000
Stock repurchased during period, value	$ 12.0	$ 9.7	$ 5.4