INVENTORIES (Details) - USD ($) $ in Millions	Jun. 30, 2019	Dec. 31, 2018	Jun. 30, 2018
Inventory Disclosure [Abstract]
Supplies	$ 74.6	$ 66.4	$ 62.7
Raw materials	73.1	66.7	76.5
Work in process	140.6	139.6	137.1
Finished goods	469.8	488.5	500.4
Inventories excluding LIFO reserve	758.1	761.2	776.7
LIFO reserve	(59.2)	(49.8)	(60.4)
Inventories, net	$ 698.9	$ 711.4	$ 716.3

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Amount before valuation and LIFO reserves of completed merchandise or goods expected to be sold within one year or operating cycle, if longer.

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Gross amount, as of the balance sheet date, of merchandise, goods, commodities, or supplies held for future sale or to be used in manufacturing, servicing or production process.

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Amount by which inventory stated at last-in first-out (LIFO) is less than (in excess of) inventory stated at other inventory cost methods.

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Amount after valuation and LIFO reserves of inventory expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of raw materials expected to be sold, or consumed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of merchandise or goods in the production process expected to be completed within one year or operating cycle, if longer.

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Amount before valuation and LIFO reserves of other supplies used within the manufacturing or production process expected to be consumed within one year or operating cycle, if longer.

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