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Inventories, Net - Inventories, Net (Detail) (USD $) In Millions, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Components Of Inventory [Line Items]
Raw materials	$ 67.5	$ 70.2
Work in process	40.0	24.7
Finished products	238.4	266.3
Inventories, net	415.2	430.6
Chemicals
Components Of Inventory [Line Items]
Raw materials	64.3	66.6
Work in process	30.0	18.0
Finished products	235.7	263.3
Supplies	69.3	69.4
Component products
Components Of Inventory [Line Items]
Raw materials	3.2	3.6
Work in process	10.0	6.7
Finished products	$ 2.7	$ 3.0

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

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