Employee Benefit Plans	12 Months Ended
Dec. 31, 2023
Employee Benefit Plans	20. EMPLOYEE BENEFIT PLANS The Company sponsors a tax-qualified defined contribution savings and investment plan, CCC 401(k) Retirement Savings and Investment Plan (the “Savings Plan”). Participation in the Savings Plan is voluntary with substantially all domestic employees eligible to participate. Expenses related to the Savings Plan consist primarily of the Company’s contributions that are based on percentages of employees’ contributions. The defined contribution expense for the years ended December 31, 2023, 2022 and 2021 was $6.5 million, $6.1 million and $5.3 million, respectively.

The entire disclosure of an entity's employee compensation and benefit plans, excluding share-based compensation and including, but not limited to, postemployment and postretirement benefit plans, defined benefit pension plans, defined contribution plans, non-qualified and supplemental benefit plans, deferred compensation, life insurance, severance, health care, unemployment and other benefit plans.

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-Topic 710
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-Topic 712
-Name Accounting Standards Codification
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-Topic 715
-Name Accounting Standards Codification
-Publisher FASB
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