Income Taxes (Summary Of Valuation Allowance) (Details) (USD $)	3 Months Ended	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2013		Sep. 30, 2012		Sep. 30, 2011
Movement in Valuation Allowances and Reserves [Roll Forward]
Valuation allowance beginning of year		$ 170,404,000		$ 38,600,000		$ 40,500,000
Net release of valuation allowance		(44,600,000)	[1]	0	[1]	(2,400,000)	[1]
Establish valuation allowance in the U.S. on foreign tax credits	124,500,000	0		124,500,000		0
Net increase in deferred tax assets for foreign jurisdictions with a full valuation allowance		1,900,000		(2,100,000)		(800,000)
Net decrease in deferred tax assets for foreign jurisdictions with a full valuation allowance		12,100,000		0		0
Establish valuation allowance in foreign jurisdictions		0		600,000		0
Adjust deferred tax asset and valuation allowance in the U.S. primarily for tax credits		16,700,000		8,800,000		1,300,000
Valuation allowance end of year	$ 170,404,000	$ 156,547,000		$ 170,404,000		$ 38,600,000

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