v3.20.1

Inventories

3 Months Ended

Mar. 31, 2020

Inventory Disclosure [Abstract]

Inventories

Inventories

​

​	March 31, 2020			​	December 31, 2019
Finished goods	$	259			$	237
Work-in-process	738				738
Purchased raw materials	72				85
Operating supplies	68				69
​	1,137				1,129
LIFO reserve	(293		)		(309		)
​	$	844			$	820

At March 31, 2020 and December 31, 2019, the portion of Inventories subject to the last-in, first-out (LIFO) inventory accounting method was $764, or 67%, and $753, or 67%, respectively, of total inventories before LIFO adjustments.

X

- References

No definition available.

+ Details

Name:	us-gaap_InventoryDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- 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/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-URI http://asc.fasb.org/topic&trid=2126998

+ Details

Name:	us-gaap_InventoryDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration