Other Liabilities (Details) (USD $) In Thousands	Jun. 30, 2011	Sep. 30, 2010
Other Liabilities
Net accrued retirement benefits, less amounts recognized with accrued liabilities	$ 64,797	$ 66,288
Uncertain tax positions, net of offsetting benefits, less amounts recognized within accrued liabilities (Note 15)	14,441	8,720
Other	11,815	8,967
Other liabilities, net	$ 91,053	$ 83,975