Inventories (Tables)

3 Months Ended

Mar. 31, 2013

Inventory Disclosure (Tables) [Abstract]

Inventories

	March 31,		December 31,
	2013		2012
Raw materials and supplies	$	367.6	$	351.6
Work-in-process		1,064.8		1,063.9
Finished goods		196.6		209.0
Total inventories at current cost		1,629.0		1,624.5
Less allowances to reduce current cost values to LIFO basis		(76.4)		(76.9)
Progress payments		(15.1)		(11.0)
Total inventories, net	$	1,537.5	$	1,536.6