v3.22.4
Cover Page - shares
 12 Months Ended
Dec. 31, 2022
Feb. 09, 2023
Document Information [Line Items]    
Document Type 20-F  
Document Registration Statement false  
Document Annual Report true  
Document Transition Report false  
Document Shell Company Report false  
Entity File Number 001-39968  
Entity Registrant Name TELUS International (Cda) Inc.  
Entity Incorporation, State or Country Code A1  
Entity Address, Address Line Two Floor 7  
Entity Address, Address Line One 510 West Georgia Street  
Entity Address, City or Town Vancouver  
Entity Address, State or Province BC  
Entity Address, Postal Zip Code V6B 0M3  
Entity Address, Country CA  
Title of 12(b) Security Subordinate voting share, no par value  
Trading Symbol TIXT  
Security Exchange Name NYSE  
Entity Common Stock, Shares Outstanding   73,083,886
Entity Well-known Seasoned Issuer No  
Entity Voluntary Filers No  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Large Accelerated Filer  
Entity Emerging Growth Company false  
ICFR Auditor Attestation Flag true  
Document Accounting Standard International Financial Reporting Standards  
Entity Shell Company false  
Document Period End Date Dec. 31, 2022  
Entity Central Index Key 0001825155  
Current Fiscal Year End Date --12-31  
Document Fiscal Year Focus 2022  
Document Fiscal Period Focus FY  
Amendment Flag false  
Business Contact    
Document Information [Line Items]    
Entity Address, Address Line Two Floor 7  
Entity Address, Address Line One 510 West Georgia Street  
Entity Address, City or Town Vancouver  
Entity Address, State or Province BC  
Entity Address, Postal Zip Code V6B 0M3  
Contact Personnel Name Michel Belec  
City Area Code 604  
Local Phone Number 695-6400