Equity-Based Compensation (Schedule Of Stock Options Activity) (Details) - Stock Options $ / shares in Units, $ in Thousands	12 Months Ended
	Sep. 30, 2017 USD ($) $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Stock Options, Outstanding beginning balance | shares	118,098
Stock Options, Exercised | shares	(93,416)
Stock Options, Outstanding ending balance | shares	24,682
Options Exercisable | shares	21,788
Weighted-Average Exercise Price, Outstanding beginning balance | $ / shares	$ 41.02
Weighted-Average Exercise Price, Exercised | $ / shares	40.64
Weighted-Average Exercise Price, Outstanding ending balance | $ / shares	42.45
Weighted-Average Exercise Price, Options Exercisable | $ / shares	$ 42.45
Weighted-Average Remaining Contractual Life, Outstanding ending balance	2 months
Weighted-Average Remaining Contractual Life, Options Exercisable	2 months
Aggregate Intrinsic Value, Outstanding ending balance | $	$ 1,011
Aggregate Intrinsic Value, Options Exercisable | $	$ 893