Share-based payments - Narrative (Details) - CAD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Mar. 31, 2024 |
Apr. 02, 2023 |
Apr. 03, 2022 |
|
| Disclosure of terms and conditions of share-based payment arrangement [line items] | |||
| Expiration term of options | 10 years | ||
| Contributed surplus and compensation expense for the vesting of stock options | $ 10.4 | $ 15.0 | $ 14.0 |
| Legacy Plan | |||
| Disclosure of terms and conditions of share-based payment arrangement [line items] | |||
| Number of future share options issuable in share-based payment arrangement (in shares) | 0 | ||
| Omnibus Plan | |||
| Disclosure of terms and conditions of share-based payment arrangement [line items] | |||
| Vesting period of stock options | 4 years | ||
| Vesting rate | 25.00% | ||
| Vesting period of RSUs | 3 years | ||
| Subordinate voting shares | Omnibus Plan | |||
| Disclosure of terms and conditions of share-based payment arrangement [line items] | |||
| Stock issued per RSU upon settlement (in shares) | 1 | ||
| Maximum number of shares reserved for issuance under equity incentive plans (in shares) | 5,310,387 | ||