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Inventories

6 Months Ended

Jun. 30, 2018

Inventory, Net [Abstract]

Inventories

Inventories

Inventories consist of the following:	June 30, 2018				December 31, 2017
Raw materials	$	125.8			$	106.2
Work-in-process	55.9				49.6
Finished goods	42.3				40.9
Operating and other supplies	139.0				120.8
Total inventories	$	363.0			$	317.5

Inventories are stated at the lower of cost or Net Realizable Value ("NRV") using the first-in, first-out ("FIFO") or the weighted average cost method.

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- Definition

The entire disclosure for inventory. Includes, but is not limited to, the basis of stating inventory, the method of determining inventory cost, the classes of inventory, and the nature of the cost elements included in inventory.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-URI http://asc.fasb.org/topic&trid=2126998

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- References

No definition available.

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