Summary of Significant Accounting Policies (Tables)

12 Months Ended

Sep. 30, 2012

Accounting Policies [Abstract]

Property, plant, and equipment, estimated useful life

Estimated Useful Life
Buildings and improvements	—	forty years
Equipment	—	three to five years
Furniture and fixtures	—	five years
Computer hardware and software	—	three to seven years
Leasehold improvements	—	five to seven years