Income Taxes (Schedule Of Provision For (Benefit From) Income Taxes) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2011
Income Tax Disclosure [Abstract]
Federal	$ 7,081	$ 8,534	$ 22,849
State	1,512	1,733	(192)
Foreign	13,586	41,101	31,530
Current provision for income taxes	22,179	51,368	54,187
Federal	(38,224)	106,041	(31,303)
State	(4,718)	7,706	(2,176)
Foreign	3,228	(8,981)	(1,584)
Deferred provision for (benefit from) income taxes	(39,714)	104,766	(35,063)
Total provision for income taxes	$ (17,535)	$ 156,134	$ 19,124