v3.26.1
share-based compensation - Weighted average assumptions (Details) - TELUS Corporation share options
6 Months Ended
Jun. 30, 2026
Y
$ / shares
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Share option award fair value (per share option) | $ / shares $ 0.85
Risk-free interest rate 2.90%
Expected lives 1 (years) | Y 4.9
Expected volatility 18.90%
Dividend yield 9.10%
Maximum  
Disclosure of terms and conditions of share-based payment arrangement [line items]  
Exercise period 10 years