Other Liabilities (Details) (USD $) In Thousands	Sep. 30, 2011	Sep. 30, 2010
Other Liabilities
Net accrued retirement benefits, less amounts recognized with accrued liabilities	$ 61,994	$ 66,288
Uncertain tax positions, net of offsetting benefits, less amounts recognized within accrued liabilities (Note 17)	14,078	8,720
Other	12,622	8,967
Other liabilities, net	$ 88,694	$ 83,975