Goodwill And Other Intangible Assets (Schedule Of Intangible Assets Gross Carrying Amounts And Accumulated Amortization) (Details) (USD $)	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2012
Goodwill and Other Intangible Assets [Line Items]
Goodwill	$ 282,337,000	$ 282,949,000	$ 279,600,000
Customer Relationships [Member]
Goodwill and Other Intangible Assets [Line Items]
Gross carrying amount	64,100,000	64,100,000
Less: accumulated amortization	21,200,000	17,900,000
Net	42,900,000	46,200,000
Other Intangible Assets [Member]
Goodwill and Other Intangible Assets [Line Items]
Gross carrying amount	400,000	400,000
Less: accumulated amortization	200,000	200,000
Net	200,000	200,000
Patents [Member]
Goodwill and Other Intangible Assets [Line Items]
Gross carrying amount	1,000,000	900,000
Less: accumulated amortization	800,000	600,000
Net	200,000	300,000
Capitalized Software [Member]
Goodwill and Other Intangible Assets [Line Items]
Gross carrying amount	37,400,000	28,700,000
Less: accumulated amortization	15,200,000	11,900,000
Net	22,200,000	16,800,000
Trade names
Goodwill and Other Intangible Assets [Line Items]
Trade names	$ 116,600,000	$ 116,700,000