LANDFILL CLOSURE AND POST-CLOSURE OBLIGATIONS - Obligation Maturities (Details) - Landfill closure and post-closure obligations - CAD ($) $ in Millions |
Dec. 31, 2023 |
Dec. 31, 2022 |
Dec. 31, 2021 |
|---|---|---|---|
| Disclosure of detailed information about property, plant and equipment | |||
| Landfill closure and post-closure obligations | $ 952.2 | $ 847.2 | $ 880.6 |
| Less than 1 year | |||
| Disclosure of detailed information about property, plant and equipment | |||
| Landfill closure and post-closure obligations | 56.2 | ||
| Between 1-2 years | |||
| Disclosure of detailed information about property, plant and equipment | |||
| Landfill closure and post-closure obligations | 121.3 | ||
| Between 2-5 years | |||
| Disclosure of detailed information about property, plant and equipment | |||
| Landfill closure and post-closure obligations | 188.6 | ||
| Over 5 years | |||
| Disclosure of detailed information about property, plant and equipment | |||
| Landfill closure and post-closure obligations | $ 586.1 |