Restructuring, Asset-Related, and Other Charges - Restructuring Program Schedule (Details) $ in Millions	9 Months Ended
Sep. 30, 2020 USD ($)
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	$ 15
Charges (credits) to income	18
Payments	(22)
Restructuring reserve, ending	11
Chemical Solutions Site Closures [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	0
Charges (credits) to income	2
Payments	0
Restructuring reserve, ending	2
2020 Restructuring Program [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	0
Charges (credits) to income	14
Payments	(7)
Restructuring reserve, ending	7
2019 Restructuring Program [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	14
Charges (credits) to income	3
Payments	(15)
Restructuring reserve, ending	2
2017 Restructuring Program [Member]
Restructuring Reserve [Roll Forward]
Restructuring reserve, beginning	1
Charges (credits) to income	(1)
Payments	0
Restructuring reserve, ending	$ 0

Restructuring charges (credits) to income.

No definition available.

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Namespace Prefix:	cc_
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Balance Type:	credit
Period Type:	duration

- Definition

Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 17
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3367-108585

+ Details

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- Definition

Carrying amount (including both current and noncurrent portions of the accrual) as of the balance sheet date pertaining to a specified type of cost associated with exit from or disposal of business activities or restructuring pursuant to a duly authorized plan.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.P.4(b))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

+ Details

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Details

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- Details

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- Details

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- Details

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