Employee future benefits - Additional Information (Details) |
12 Months Ended |
|---|---|
|
Dec. 31, 2022
USD ($)
plan
| |
| Disclosure of net defined benefit liability (asset) [line items] | |
| Estimate of contributions expected to be paid to plan for next annual reporting period | $ | $ 0 |
| Number of plans | plan | 2 |
| Actuarial assumption of medical cost trend rates | |
| Disclosure of net defined benefit liability (asset) [line items] | |
| Percentage of reasonably possible decrease in actuarial assumption | 1.00% |
| Percentage of reasonably possible increase in actuarial assumption | 1.00% |