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DEBT AND CREDIT FACILITIES - Scheduled Debt Repayments (Details) $ in Millions | Dec. 31, 2020 CAD ($)
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Disclosure of maturity analysis for non-derivative financial liabilities [line items] |
Scheduled principal repayments for lease liabilities, short-term debt and long-term debt | $ 21,779.0
2021 |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |
Scheduled principal repayments for lease liabilities, short-term debt and long-term debt | 5,290.0
2022 |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |
Scheduled principal repayments for lease liabilities, short-term debt and long-term debt | 494.0
2023 |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |
Scheduled principal repayments for lease liabilities, short-term debt and long-term debt | 786.0
2024 |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |
Scheduled principal repayments for lease liabilities, short-term debt and long-term debt | 1,148.0
2025 |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |
Scheduled principal repayments for lease liabilities, short-term debt and long-term debt | 877.0
Thereafter |
Disclosure of maturity analysis for non-derivative financial liabilities [line items] |
Scheduled principal repayments for lease liabilities, short-term debt and long-term debt | $ 13,184.0

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