Inventoried Costs (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure [Abstract]

Schedule of inventoried costs

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

	December 30, 2012			March 31, 2013
Raw materials	$	48.4		$	42.5
Work in process	36.5			39.2
Finished goods	7.3			5.8
Supplies and other	2.2			1.7
Subtotal inventoried costs	94.4			89.2
Less: Customer advances and progress payments	(0.1		)	(1.0		)
Total inventoried costs	$	94.3		$	88.2