Announcement date of plant closing.

No definition available.

Name:	cc_AnnouncementDateOfPlantClosing
Namespace Prefix:	cc_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Approved date of plant closing.

+ References

No definition available.

+ Details

Name:	cc_ApprovedDateOfPlantClosing
Namespace Prefix:	cc_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Contract liabilities paid.

+ References

No definition available.

+ Details

Name:	cc_ContractLiabilitiesPaid
Namespace Prefix:	cc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

contract termination charges.

+ References

No definition available.

+ Details

Name:	cc_ContractTerminationCharges
Namespace Prefix:	cc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Contract Termination Liabilities.

+ References

No definition available.

+ Details

Name:	cc_ContractTerminationLiabilities
Namespace Prefix:	cc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Decommissioning and other charges.

+ References

No definition available.

+ Details

Name:	cc_DecommissioningAndOtherCharges
Namespace Prefix:	cc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Decommissioning, dismantling and other charges (recovery).

+ References

No definition available.

+ Details

Name:	cc_DecommissioningDismantlingAndOtherChargesRecovery
Namespace Prefix:	cc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Effective date of plant closing.

+ References

No definition available.

+ Details

Name:	cc_EffectiveDateOfPlantClosing
Namespace Prefix:	cc_
Data Type:	xbrli:dateItemType
Balance Type:	na
Period Type:	duration

- Definition

Remaining contract termination liability.

+ References

No definition available.

+ Details

Name:	cc_RemainingContractTerminationLiability
Namespace Prefix:	cc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Write-Off of Deferred Software Development Costs

+ References

No definition available.

+ Details

Name:	cc_WriteOffOfDeferredSoftwareDevelopmentCosts
Namespace Prefix:	cc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Write off raw materials and stores inventories.

+ References

No definition available.

+ Details

Name:	cc_WriteOffRawMaterialsAndStoresInventories
Namespace Prefix:	cc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

+ Details

Name:	us-gaap_AssetImpairmentCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount, before recovery, of expense for known and estimated future costs arising from requirement to perform environmental remediation.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 410
-SubTopic 30
-Name Accounting Standards Codification
-Section 55
-Paragraph 11
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481899/410-30-55-11

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 410
-SubTopic 30
-Name Accounting Standards Codification
-Section 45
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481960/410-30-45-4

Reference 3: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 410
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481931/410-30-50-12

+ Details

Name:	us-gaap_EnvironmentalRemediationExpense
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482017/420-10-50-1

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 17
-Subparagraph (f)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-17

+ Details

Name:	us-gaap_PaymentsForRestructuring
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Excludes expenses related to a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4.b.1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2

Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 3
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482047/420-10-45-3

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 5.P.3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479823/420-10-S99-1

+ Details

Name:	us-gaap_RestructuringCharges
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4.d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4.b.1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4.b.2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482017/420-10-50-1

Reference 5: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482017/420-10-50-1

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482017/420-10-50-1

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482017/420-10-50-1

+ Details

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

- Definition

Indicates line item in statement of income or comprehensive income that includes restructuring charges.

+ References

Reference 1: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4.c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479823/420-10-S99-2

Reference 2: http://www.xbrl.org/2003/role/recommendedDisclosureRef
-Topic 420
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482017/420-10-50-1

+ Details

Name:	us-gaap_RestructuringIncurredCostStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration
Namespace Prefix:	us-gaap_
Data Type:	enum2:enumerationSetItemType
Balance Type:	na
Period Type:	duration

- 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

+ Details

Name:	us-gaap_RestructuringReserve
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Amount of expenses for special or contractual termination benefits provided to current employees involuntarily terminated under a benefit arrangement associated exit or disposal activities pursuant to an authorized plan. Excludes expenses related to one-time termination benefits, a discontinued operation or an asset retirement obligation.

+ References

+ Details

Name:	us-gaap_SeveranceCosts1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_RestructuringPlanAxis=cc_RestructuringProgramTwoThousandTwentyTwoMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RestructuringPlanAxis=cc_RestructuringProgramTwoThousandTwentyThreeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RestructuringPlanAxis=cc_RestructuringProgramTwoThousandTwentyFourMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RestructuringPlanAxis=cc_TitaniumTechnologiesTransformationPlanMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RestructuringPlanAxis=cc_EnterpriseResourcePlanningImplementationAbandonmentChargesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_RestructuringCostAndReserveAxis=us-gaap_FacilityClosingMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=cc_TitaniumTechnologiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=cc_AdvancedPerformanceMaterialsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=cc_ThermalAndSpecializedSolutionsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=us-gaap_AllOtherSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Restructuring, Asset-Related, and Other Charges - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended				17 Months Ended	24 Months Ended	36 Months Ended
	Mar. 31, 2023	Dec. 31, 2026	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2024
Restructuring Cost and Reserve [Line Items]
Asset-related impairment			$ 27	$ 97	$ 5
Decommissioning and other charges			14	31	2
Payments			(20)	(17)
Environmental remediation liabilities			70	66	269
Employee separation related liabilities			13	14	6	$ 13	$ 13	$ 13
Employee separation charges			19	25	9
2022 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Restructuring charges								8
Payments			0	(5)
Employee separation related liabilities			0	0	6	0	0	0
Employee separation charges				(1)
2023 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Payments			(4)	0
Employee separation related liabilities			0	4	0	0	0	0
Employee separation charges				4			4
2024 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment			27
Restructuring charges			50
Decommissioning and other charges			3
Payments			(8)	0
Employee separation related liabilities			12	0	0	12	12	12
Employee separation charges			$ 20
Titanium Technologies Transformation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment				78
Announcement date of plant closing			Jul. 27, 2023
Effective date of plant closing			Aug. 01, 2023
Approved date of plant closing			Jul. 26, 2023
Decommissioning and other charges			$ 11	27
Payments			(8)	(11)
Employee separation related liabilities			1	10	0	1	1	1
Employee separation charges			(1)	21
ERP Implementation Abandonment [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment				11
Contract Termination Charges	$ 4
Decommissioning and other charges				4
Payments			0	(1)
Write-Off of Deferred Software Development Costs	11
Employee separation related liabilities			0	0	0	0	0	$ 0
Employee separation charges	$ 1			1
Facility Closing [Member] \| Titanium Technologies Transformation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment						78
Restructuring charges						$ 130
Restructuring Charges, Statement of Income or Comprehensive Income [Extensible Enumeration]						Restructuring Charges Asset Related And Other Charges		Restructuring Charges Asset Related And Other Charges
Contract Termination Charges						$ 14
Decommissioning and other charges						24
Payments			(48)
Write off raw materials and stores inventories				40
Decommissioning Dismantling And Other Charges Recovery			11
Employee separation charges						14
Corporate [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment				12
Decommissioning and other charges				4
Employee separation charges			6	1	4
Corporate [Member] \| 2022 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation charges				(1)
Corporate [Member] \| 2023 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation charges				1			1
Corporate [Member] \| 2024 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation charges			6
Corporate [Member] \| Titanium Technologies Transformation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment				1
Corporate [Member] \| ERP Implementation Abandonment [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment				11
Decommissioning and other charges				4
Employee separation charges				1
Titanium Technologies [Member] \| Titanium Technologies Transformation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Contract termination liabilities			14			14	14	$ 14
Liabilities paid			10			10	10	10
Remaining outstanding liability			4			4	4	$ 4
Titanium Technologies [Member] \| Facility Closing [Member] \| Titanium Technologies Transformation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation charges						$ 6
Titanium Technologies [Member] \| Operating Segments [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment				77	5
Decommissioning and other charges			11	27
Employee separation charges			(1)	21	1
Titanium Technologies [Member] \| Operating Segments [Member] \| Titanium Technologies Transformation Plan [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment				77
Decommissioning and other charges			11	27
Employee separation charges			(1)	21
Advanced Performance Materials [Member] \| 2023 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation charges							$ 3
Advanced Performance Materials [Member] \| Forecast [Member] \| 2024 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Decommissioning and other charges		$ 3
Advanced Performance Materials [Member] \| Operating Segments [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment			27
Decommissioning and other charges			3
Employee separation charges			14	2	3
Advanced Performance Materials [Member] \| Operating Segments [Member] \| 2022 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation charges				(1)
Advanced Performance Materials [Member] \| Operating Segments [Member] \| 2023 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation charges				3
Advanced Performance Materials [Member] \| Operating Segments [Member] \| 2024 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment			27
Decommissioning and other charges			3
Employee separation charges			$ 14
Thermal & Specialized Solutions [Member] \| Operating Segments [Member]
Restructuring Cost and Reserve [Line Items]
Asset-related impairment				8
Employee separation charges				1	1
Thermal & Specialized Solutions [Member] \| Operating Segments [Member] \| 2022 Restructuring Program [Member]
Restructuring Cost and Reserve [Line Items]
Employee separation charges				$ 1
Other Segment [Member] \| Operating Segments [Member]
Restructuring Cost and Reserve [Line Items]
Decommissioning and other charges					$ 2