Commitments And Contingencies Operating leases (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2010
Commitments and Contingencies [Abstract]
Operating Leases, Rent Expense	$ 34,327	$ 40,298	$ 30,218
Operating Leases, Future Minimum Payments Due, Next Twelve Months	32,623
Operating Leases, Future Minimum Payments, Due in Two Years	27,731
Operating Leases, Future Minimum Payments, Due in Three Years	22,296
Operating Leases, Future Minimum Payments, Due in Four Years	21,549
Operating Leases, Future Minimum Payments, Due in Five Years	16,823
Operating Leases, Future Minimum Payments, Due Thereafter	43,199
Operating Leases, Future Minimum Payments Due	$ 164,221