Inventories, Net (Tables)

9 Months Ended

Sep. 30, 2014

Inventory Disclosure [Abstract]

Inventories, Net

	December 31, 2013		September 30, 2014
	(In millions)
Raw materials:
Chemicals	$	66.6	$	62.2
Component products		3.6		3.1
Total raw materials		70.2		65.3
Work in process:
Chemicals		18.0		28.6
Component products		6.7		9.7
Total in-process products		24.7		38.3
Finished products:
Chemicals		263.3		242.9
Component products		3.0		2.3
Total finished products		266.3		245.2
Supplies (primarily Chemicals)		69.4		68.9
Total	$	430.6	$	417.7