Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Net Components of Inventory

Inventories, net consisted of the following:

	March 31,			December 31,
(Amounts in thousands)	2013			2012
Raw materials	$	386,235		$	351,705
Work in process	834,389			798,662
Finished goods	296,634			288,160
Less: Progress billings	(283,032		)	(275,611		)
Less: Excess and obsolete reserve	(78,453		)	(76,253		)
Inventories, net	$	1,155,773		$	1,086,663