Restricted Net Assets - Additional Information (Detail)	Dec. 31, 2023	Dec. 31, 2022
Disclosure Of Restricted Net Asset [Abstract]
Restricted assets as a percentage of consolidated net assets	25.00%	25.00%

Restricted assets as a percentage of consolidated net assets.

No definition available.

Name:	tdcx_RestrictedAssetsAsAPercentageOfConsolidatedNetAssets
Namespace Prefix:	tdcx_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant