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General - Additional Information (Detail) - SGD ($)
Mar. 23, 2021
Dec. 22, 2020
Jan. 31, 2019
TDCX KY [Member]      
Disclosure of General Information About Financial Statements [Line Items]      
Percentage of equity interest acquired 100.00% 100.00%  
Cash consideration   $ 2  
Founder [Member]      
Disclosure of General Information About Financial Statements [Line Items]      
Percentage of reduction in equity interest through cancellation of of shares in subsidiary     60.00%