Debt instrument maturity month and year.

No definition available.

Name:	cc_DebtInstrumentMaturityMonthAndYear
Namespace Prefix:	cc_
Data Type:	xbrli:gYearMonthItemType
Balance Type:	na
Period Type:	duration

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium.

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Date when the debt instrument is scheduled to be fully repaid, in YYYY-MM-DD format.

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Period Type:	duration

- Definition

Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

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

- Definition

The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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

- Definition

The fee, expressed as a percentage of the line of credit facility, for the line of credit facility regardless of whether the facility has been used.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Description of the terms of a credit facility arrangement. Terms typically include interest rate, collateral required, guarantees required, repayment requirements, and restrictions on use of assets and activities of the entity.

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Date the credit facility terminates, in YYYY-MM-DD format.

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- 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.

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Period Type:	duration

- Definition

Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

+ References

+ Details

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

- Definition

Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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

- Definition

The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer.

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- Details

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Balance Type:
Period Type:

- Details

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Period Type:

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- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_CreditFacilityAxis=cc_EuroTermLoanMember
Namespace Prefix:
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Balance Type:
Period Type:

- Details

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Period Type:

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Period Type:

- Details

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Period Type:

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Period Type:

Debt - Senior Secured Credit Facilities - Narrative (Details) € in Millions, $ in Millions				3 Months Ended		6 Months Ended
	Oct. 15, 2025 USD ($)	May 02, 2025 USD ($)	Aug. 18, 2023 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 USD ($)	Jun. 30, 2025 USD ($)	Jun. 30, 2026 EUR (€)	Dec. 31, 2025 USD ($)
Line of Credit Facility [Line Items]
Debt instrument maturity date						Aug. 18, 2028
Loss on extinguishment of debt				$ (2)	$ 0	$ (11)	$ 0
Senior Secured Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt instrument description						The Revolving Credit Facility is subject to a springing maturity in the event that the Dollar Term Loans, the Euro Term Loans or the unsecured notes due 2028 and 2029 are not redeemed, repaid, modified, and/or refinanced within the 91 day period prior to their maturity date.
Base Rate [Member]
Line of Credit Facility [Line Items]
Variable rate	2.50%
Base Rate [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Variable rate						2.00%
SOFR [Member]
Line of Credit Facility [Line Items]
Variable rate	3.50%
SOFR [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Variable rate						3.00%
SOFR [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Variable rate						0.50%
Senior Secured Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Debt instrument term			5 years
Line of credit facility, maximum borrowing capacity		$ 1,000	$ 900
Term loan repayments				3		$ 5
Long-term debt				0		0			$ 0
Letters of credit outstanding				47		$ 47			$ 45
Commitment fee percentage						0.25%
Euro Term Loan [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity \| €								€ 415
Loss on extinguishment of debt				$ (2)		$ (11)
Effective interest rates on senior secured term loan				5.40%		5.40%		5.40%
Debt instrument maturity month and year				2028-08
Euro Term Loan [Member] \| Base Rate [Member]
Line of Credit Facility [Line Items]
Variable rate						0.00%
Euro Term Loan [Member] \| Euro Interbank Offered Rate [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Variable rate						3.25%
Senior secured term loans Tranche B-3 euro term loan due August 2028
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity \| €								€ 230
Dollar Term Loan [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity	$ 1,050			$ 1,070		$ 1,070
Effective interest rates on senior secured term loan				7.10%		7.10%		7.10%
Dollar Term Loan [Member] \| Maximum [Member]
Line of Credit Facility [Line Items]
Debt instrument maturity date	Oct. 15, 2032
Dollar Term Loan [Member] \| Minimum [Member]
Line of Credit Facility [Line Items]
Debt instrument maturity date	Aug. 18, 2028
Dollar Term Loan [Member] \| Base Rate [Member]
Line of Credit Facility [Line Items]
Variable rate						1.00%
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity				$ 953		$ 953
Revolving Commitments Maturing on May 2, 2030 [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity				780		$ 780
Revolving credit facility maturity date						May 02, 2030
Revolving Commitments Maturing on May 2, 2030 [Member] \| Senior Secured Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$ 780
Revolving credit facility maturity date		May 02, 2030
Revolving Commitments Maturing on October 7, 2026 [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity				$ 220		$ 220
Revolving credit facility maturity date						Oct. 07, 2026
Revolving Commitments Maturing on October 7, 2026 [Member] \| Senior Secured Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity		$ 220
Revolving credit facility maturity date		Oct. 07, 2026