Restructuring Costs (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended	12 Months Ended
	Jun. 30, 2012	Sep. 30, 2011
Restructuring Costs
Expenses incurred in fiscal 2011		$ 17,930
Estimated expenses to be incurred in fiscal 2012	2,145
Total estimated expenses	20,075
Workforce Reductions And Related Severance Expenses
Restructuring Costs
Expenses incurred in fiscal 2011		4,124
Estimated expenses to be incurred in fiscal 2012	519
Total estimated expenses	4,643
Facility Closures And Consolidations
Restructuring Costs
Expenses incurred in fiscal 2011		7,213
Estimated expenses to be incurred in fiscal 2012	838
Total estimated expenses	8,051
Asset Impairments And Write-Downs
Restructuring Costs
Expenses incurred in fiscal 2011		6,593
Estimated expenses to be incurred in fiscal 2012	788
Total estimated expenses	$ 7,381