Income Taxes (Summary Of Valuation Allowance) (Details) (USD $)	12 Months Ended
	Sep. 30, 2014		Sep. 30, 2013		Sep. 30, 2012
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation allowance beginning of year	$ 156,547,000		$ 170,400,000		$ 38,600,000
Net release of valuation allowance	(18,100,000)	[1]	(44,600,000)	[1]	0	[1]
Establish valuation allowance in the U.S. on foreign tax credits	0		0		124,500,000
Net increase in deferred tax assets for foreign jurisdictions with a full valuation allowance	(5,200,000)		1,900,000		(2,100,000)
Net decrease in deferred tax assets for foreign jurisdictions with a full valuation allowance	21,500,000		12,100,000		0
Establish valuation allowance in foreign jurisdictions	3,500,000		0		600,000
Adjust deferred tax asset and valuation allowance in the U.S. primarily for tax credits	19,300,000		16,700,000		8,800,000
Valuation allowance end of year	$ 177,541,000		$ 156,547,000		$ 170,400,000

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