Senior debt carrying value.

No definition available.

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

- Definition

Senior debt fair value.

+ References

No definition available.

+ Details

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Balance Type:	credit
Period Type:	instant

- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

+ References

+ Details

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

- 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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- Definition

Amount, after accumulated amortization, of debt discount.

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- Definition

Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

+ Details

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- Definition

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

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- Definition

The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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Debt - Estimated Fair Values of Senior Debt Issues (Details) € in Millions, $ in Millions	Mar. 31, 2026 USD ($)	Mar. 31, 2026 EUR (€)	Dec. 31, 2025 USD ($)	Dec. 31, 2025 EUR (€)
Debt Instrument [Line Items]
Less: Unamortized issue discounts	$ (19)		$ (21)
Less: Unamortized debt issuance costs	(27)		(20)
Senior Secured Tranche B-4 U.S. Dollar Term Loan Due October 2032 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	1,047		1,050
Senior Secured Tranche B-3 Euro Term Loan Due August 2028 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	478	€ 415	488	€ 415
5.375% Senior Unsecured Notes Due May 2027 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	0		495
5.750% Senior Unsecured Notes Due November 2028 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	595		783
4.625% Senior Unsecured Notes Due November 2029 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	620		620
8.000% Senior Unsecured Notes Due January 2033 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	600		600
7.875% Senior Unsecured Notes Due March 2034 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	700		0
Level 2 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	4,040		4,036
Long-term debt, Fair Value	3,994		3,931
Total senior debt, Carrying Value	4,040		4,036
Less: Unamortized issue discounts	(19)		(21)
Less: Unamortized debt issuance costs	(27)		(20)
Total principal maturities on debt	3,994		3,995
Total senior debt, Fair Value	3,994		3,931
Level 2 [Member] \| Senior Secured Tranche B-4 U.S. Dollar Term Loan Due October 2032 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	1,047		1,050
Long-term debt, Fair Value	1,041		1,038
Level 2 [Member] \| Senior Secured Tranche B-3 Euro Term Loan Due August 2028 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	478		488
Long-term debt, Fair Value	476		493
Level 2 [Member] \| 5.375% Senior Unsecured Notes Due May 2027 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	0		495
Long-term debt, Fair Value	0		496
Level 2 [Member] \| 5.750% Senior Unsecured Notes Due November 2028 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	595		783
Long-term debt, Fair Value	590		761
Level 2 [Member] \| 4.625% Senior Unsecured Notes Due November 2029 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	620		620
Long-term debt, Fair Value	583		562
Level 2 [Member] \| 8.000% Senior Unsecured Notes Due January 2033 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	600		600
Long-term debt, Fair Value	603		581
Level 2 [Member] \| 7.875% Senior Unsecured Notes Due March 2034 [Member]
Debt Instrument [Line Items]
Long-term debt, Carrying Value	700		0
Long-term debt, Fair Value	$ 701		$ 0