Goodwill And Intangible Assets (Schedule Of Expected Annual Amortization Expense Related To Intangible Assets For The Next Five Years) (Details) (USD $) In Thousands	12 Months Ended
	Sep. 30, 2011
Finite-Lived Intangible Assets [Line Items]
Amortization expense, 2012	$ 25,599
Amortization expense, 2013	19,810
Amortization expense, 2014	15,211
Amortization expense, 2015	13,172
Amortization expense, 2016	$ 9,147