COMMITMENTS AND CONTINGENCIES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
Mar. 31, 2015 plaintiff	Dec. 31, 2014
Environmental Regulation
Environmental contingencies	$ 52	$ 54
Current reserves for environmental contingencies	10	12
Number of plant site locations	2us-gaap_NumberOfStores
Minimum
Environmental Regulation
Potential additional loss contingencies	52
Maximum
Environmental Regulation
Potential additional loss contingencies	89
Lake Charles, LA facility
Legal proceedings
Number of individuals that have filed lawsuits against the Company	2,615
Environmental Regulation
Environmental contingencies	15	18
Lake Charles, South facility
Environmental Regulation
Environmental contingencies	15	15
Natrium, West Virginia facility
Environmental Regulation
Environmental contingencies	$ 15	$ 15
Natrium, West Virginia facility and Lake Charles, South facility \| Minimum
Environmental Regulation
Period during which facilities are operational	65 years

Represents the period during which facilities are operational.

No definition available.

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- Definition

Total costs accrued as of the balance sheet date for environmental loss contingencies.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 30

-Section 50

-Paragraph 7

-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859

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+ Details

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- Definition

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable in twelve months or in the next operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 20

-Article 5

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

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-Publisher FASB

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-Paragraph 1

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

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-Publisher FASB

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-Publisher FASB

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-Topic 410

-SubTopic 30

-Section 50

-Paragraph 10

-Subparagraph (d)(1)

-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13237-110859

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	credit
Period Type:	instant

- Definition

Carrying value of the obligation (known or estimated) arising from requirements to perform activities to remediate one or more sites, payable after twelve months or beyond the next operating cycle if longer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.24)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 24

-Article 5

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 410

-SubTopic 30

-Section 50

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-URI http://asc.fasb.org/extlink&oid=6393242&loc=d3e13207-110859

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-Publisher FASB

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-SubTopic 20

-Section 50

-Paragraph 1

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-Publisher FASB

-Name Accounting Standards Codification

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-Section 50

-Paragraph 10

-Subparagraph (d)(1)

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+ Details

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- Details

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- Details

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- Definition

Number of plaintiffs that have filed claims pertaining to a loss contingency.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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Balance Type:	na
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- Definition

Represents the number of stores.

+ References

No definition available.

+ Details

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- Details

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