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Segment Information (Consolidated Total Assets by Segment) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011	Sep. 30, 2011
Assets	$ 1,736,363	$ 1,781,434
Property, plant and equipment, net	207,306	206,725
Aerospace [Member]
Assets	1,020,158	1,036,797
Energy [Member]
Assets	554,219	569,929
Total Segment Assets [Member]
Assets	1,574,377	1,606,726
Unallocated Corporate [Member]
Property, plant and equipment, net	11,099	8,556
Other unallocated assets	$ 150,887	$ 166,152

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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- Definition

Tangible assets that are held by an entity for use in the production or supply of goods and services, for rental to others, or for administrative purposes and that are expected to provide economic benefit for more than one year; net of accumulated depreciation. Examples include land, buildings, machinery and equipment, and other types of furniture and equipment including, but not limited to, office equipment, furniture and fixtures, and computer equipment and software.

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