COMMITMENTS AND CONTINGENCIES (Asbestos Related Matters) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Loss Contingencies [Line Items]
Percentage of Recorded Asbests Liability Related to Pending Claims	23.00%	25.00%
Percentage of Recorded Asbestos Liability Related to Future Claims	77.00%	75.00%
Liability for Asbestos Claims and Defense Costs Gross	$ 947	$ 1,016

Carrying amount as of the balance sheet date of reserves for the costs of settling insured claims and costs incurred in the claims settlement process, and reserves for defense and processing costs attributable to asbestos claims

No definition available.

Name:	ucc_LiabilityforAsbestosClaimsandDefenseCostsGross
Namespace Prefix:	ucc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant