Represents the supplemental cash distribution to Holders of Interests granted by the Bankruptcy Court.

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the value of the supplemental stock distribution to Holders of Interests granted by the Bankruptcy Court.

+ References

No definition available.

+ Details

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Namespace Prefix:	chmt_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Number of U.S. affiliates of the entity also included in the bankruptcy proceedings.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Number of entities which the Bankruptcy Court entered an order granting a final decree closing the Fully Administered Debtors' Chapter 11 cases.

+ References

No definition available.

+ Details

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Data Type:	xbrli:integerItemType
Balance Type:	na
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- Definition

Represents the number of general unsecured claims that are disallowed and expunged by order of the Bankruptcy Court.

+ References

No definition available.

+ Details

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Namespace Prefix:	chmt_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Details

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- Definition

Amount of net gain (loss) on settlement of other claims for entities in bankruptcy, reported as a reorganization item.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of reorganization items related to legal and advisory professional fees related to entities in bankruptcy.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 852

-SubTopic 10

-Section 55

-Paragraph 3

-URI http://asc.fasb.org/extlink&oid=6585303&loc=d3e56145-112766

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 852

-SubTopic 10

-Section 45

-Paragraph 9

-URI http://asc.fasb.org/extlink&oid=6916575&loc=d3e55730-112764

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

-Publisher AICPA

-Name Statement of Position (SOP)

-Number 90-7

-Paragraph 27

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Total amount of reorganization items.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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EMERGENCE FROM CHAPTER 11 (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended		3 Months Ended				3 Months Ended
	Jul. 31, 2012	Mar. 31, 2012	Mar. 31, 2012	May 04, 2012 item	Dec. 02, 2011 debtor	Mar. 18, 2009 entity	Mar. 31, 2013 Maximum
EMERGENCE FROM CHAPTER 11
Number of US affiliates of the entity that also filed voluntary petitions for relief under Chapter 11						26
Supplemental cash distribution payments to Holders of Interests		$ 3
Supplemental stock distribution payments to Holders of Interests	3	20
Number of general unsecured claims disallowed and expunged by order of the Bankruptcy Court				2
Number of Fully Administered Debtors					22
Reorganization items related to Chapter 11 cases
Professional fees			1
Claim settlements, net			1
EMERGENCE FROM CHAPTER 11
Reorganization items, net			$ 2				$ 1