Financing obligation.

No definition available.

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

- Definition

Amount of short-term debt and current maturity of long-term debt and capital lease obligations due within one year or the normal operating cycle, if longer.

+ References

+ Details

Name:	us-gaap_DebtCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
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

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-Publisher FASB
-Name Accounting Standards Codification
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+ Details

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Namespace Prefix:	us-gaap_
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.

+ References

No definition available.

+ Details

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

- Definition

Amount, after accumulated amortization, of debt discount.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
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+ Details

Name:	us-gaap_DebtInstrumentUnamortizedDiscount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

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

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
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+ Details

Name:	us-gaap_DeferredFinanceCostsNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Present value of lessee's discounted obligation for lease payments from finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
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+ Details

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

- Definition

Amount of long-term debt and lease obligation, classified as noncurrent.

+ References

+ Details

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

- Definition

Amount of long-term debt and lease obligation, including portion classified as current.

+ References

No definition available.

+ Details

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

- Details

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

- Details

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- Details

Name:	us-gaap_DebtInstrumentAxis=cc_SeniorUnsecuredNotesFourPointZeroZeroZeroDueMayTwoThousandTwentySixMember
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Balance Type:
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- Details

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- Details

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Namespace Prefix:
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- Details

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Debt - Components of Debt (Details) € in Millions, $ in Millions	Mar. 31, 2022 USD ($)	Mar. 31, 2022 EUR (€)	Dec. 31, 2021 USD ($)	Dec. 31, 2021 EUR (€)
Debt Instrument [Line Items]
Finance lease liabilities	$ 69		$ 72
Financing obligation	92		93
Total debt principal	3,748		3,782
Less: Unamortized issue discounts	(5)		(5)
Less: Unamortized debt issuance costs	(27)		(28)
Less: Short-term and current maturities of long-term debt	(24)		(25)
Total long-term debt, net	3,692		3,724
Senior Secured Tranche B-2 U.S Dollar Term Loan Due April 2025 [Member]
Debt Instrument [Line Items]
Long-term debt	773		776
Senior Secured Tranche B-2 Euro Term Loan Due April 2025 [Member]
Debt Instrument [Line Items]
Long-term debt	369	€ 336	381	€ 337
4.000% Senior Unsecured Notes Due May 2026 [Member]
Debt Instrument [Line Items]
Long-term debt	495	€ 450	510	€ 450
5.375% Senior Unsecured Notes Due May 2027 [Member]
Debt Instrument [Line Items]
Long-term debt	500		500
5.750% Senior Unsecured Notes Due November 2028 [Member]
Debt Instrument [Line Items]
Long-term debt	800		800
4.625% Senior Unsecured Notes Due November 2029 [Member]
Debt Instrument [Line Items]
Long-term debt	$ 650		$ 650