short-term borrowings (Details) - CAD ($) $ in Millions |
6 Months Ended | 12 Months Ended | |
|---|---|---|---|
Jun. 30, 2019 |
Dec. 31, 2018 |
Jun. 30, 2018 |
|
| Disclosure of detailed information about borrowings | |||
| Long-term debt | $ 16,579 | $ 14,101 | $ 14,145 |
| Short-term borrowings | 100 | 100 | $ 113 |
| TELUS Communications Inc. | Revolving period securitization agreement | |||
| Disclosure of detailed information about borrowings | |||
| Cash proceeds from monthly sales | 100 | 100 | |
| Trade receivables sold | 126 | 120 | |
| Short-term borrowings | 100 | 100 | |
| TELUS Communications Inc. | Revolving period securitization agreement | Maximum | |||
| Disclosure of detailed information about borrowings | |||
| Trade receivables that can be sold under the securitization agreement | $ 500 | $ 500 |