Inventoried Costs (Tables)

9 Months Ended

Sep. 30, 2012

Inventory Disclosure [Abstract]

Schedule of inventoried costs

Inventoried costs consisted of the following components (in millions):

	December 25, 2011			September 30, 2012
Raw materials	$	43.3		$	48.4
Work in process	25.7			41.9
Finished goods	6.9			7.8
Supplies and other	4.0			1.9
Subtotal inventoried costs	79.9			100.0
Less customer advances and progress payments	(3.3		)	(0.1		)
Total inventoried costs	$	76.6		$	99.9