Share-Based Compensation (Schedule Of Stock Options Awarded Under The Option Plans) (Details) - $ / shares	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options Outstanding, Shares	0	67,350	125,816
Stock options Granted, Shares	0	0	0
Stock options Exercised, Shares	0	0	(51,116)
Stock options Cancelled, Shares	0	(67,350)	(7,350)
Stock options Outstanding, Shares	0	0	67,350
Reserved for future grant	500,000	500,000	500,000
Stock options Exercisable, Shares	0	0	67,350
Stock options Outstanding, Weighted Average Price	$ 0	$ 37.39	$ 36.29
Stock options Granted, Weighted Average Price	0	0	0
Stock options Exercised, Weighted Average Price	0	0	34.70
Stock options Cancelled / Expired, Weighted Average Price	0	37.39	37.30
Stock options Outstanding, Weighted Average Price	0	0	37.39
Stock options Exercisable, Weighted Average Price	$ 0	$ 0	$ 37.39