Income Taxes (Summary Of Valuation Allowance) (Details) - USD ($) $ in Thousands		12 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation allowance beginning of year		$ 177,541	$ 156,500	$ 170,400
Net release of valuation allowance	[1]	(18,700)	(18,100)	(44,600)
Net increase in deferred tax assets for foreign jurisdictions with a full valuation allowance		(1,900)	(5,200)	1,900
Establish valuation allowance for acquired businesses		0	21,500	12,100
Establish valuation allowance in foreign jurisdictions		0	3,500	0
Adjust deferred tax asset and valuation allowance		41,300	19,300	16,700
Valuation allowance end of year		$ 198,168	$ 177,541	$ 156,500

[1] In 2014 and 2013, this is attributable to recognition of deferred tax liabilities recorded in connection with accounting for acquisitions and in 2015 and 2013 a reduction in deferred tax assets associated with our U.S. pension plan, both of which are described above.