v3.19.2
share-based compensation - TELUS International (Cda) Inc. share options (Details)
6 Months Ended
Jun. 30, 2019
USD ($)
Y
Options
Jun. 30, 2019
CAD ($)
Y
Options
Mar. 31, 2019
USD ($)
Options
Mar. 31, 2019
CAD ($)
Options
Dec. 31, 2018
USD ($)
Options
Dec. 31, 2018
CAD ($)
Options
Telus International (Cda) Inc. share options, U.S. $ denominated            
share-based compensation            
Number of options outstanding | Options 858,735 858,735 858,735 858,735 858,735 858,735
Weighted average share price of options outstanding $ 29.83   $ 29.83   $ 29.83  
Weighted average remaining contractual life (years) | Y 7.9 7.9        
TELUS International (Cda) Inc. share options, Canadian $ denominated            
share-based compensation            
Number of options outstanding | Options 53,832 53,832 53,832 53,832 53,832 53,832
Weighted average share price of options outstanding   $ 21.36   $ 21.36   $ 21.36
Weighted average remaining contractual life (years) | Y 7.1 7.1        
Minimum | TELUS International (Cda) Inc. share options            
share-based compensation            
Variable payout (as a percent) 0.00% 0.00%        
Minimum | Telus International (Cda) Inc. share options, U.S. $ denominated            
share-based compensation            
Option price $ 21.90          
Maximum | TELUS International (Cda) Inc. share options            
share-based compensation            
Exercise period 10 years          
Variable payout (as a percent) 100.00% 100.00%        
Maximum | Telus International (Cda) Inc. share options, U.S. $ denominated            
share-based compensation            
Option price $ 40.26