Inventories (Tables)

3 Months Ended

Mar. 31, 2012

Inventory Disclosure [Abstract]

Schedule of Inventory

Inventories consisted of the following:

	March 31,			December 31,
(millions of dollars)	2012			2011
Raw material and supplies	$	272.0		$	254.4
Work in progress	94.9			90.9
Finished goods	131.2			124.3
FIFO inventories	498.1			469.6
LIFO reserve	(17.3		)	(15.3		)
Inventories, net	$	480.8		$	454.3