Non-Current Assets (Details) $ in Millions	Dec. 31, 2023 USD ($)
Non-Current Assets [Abstract]
Clinical trial deposits held by a contract research organization	$ 1.3

Represents the value of deposits held by a third-party but considered an asset to the Company.

No definition available.

Name:	cycc_DepositsHeldByRelatedParty
Namespace Prefix:	cycc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant