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v3.20.4

Long term debt - Schedules (Narrative) (Details) | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2020 CAD ($) | Dec. 31, 2019 CAD ($) | Nov. 20, 2020 CAD ($) | Oct. 21, 2020 CAD ($)
Disclosure of detailed information about borrowings [line items] |  |  |  |
Proceeds of long-term debt | $ 397,539,000 | $ 0 |  |
Redemption of Series E debentures | 24,439,000 | 0 |  |
Revolving Credit Facilities [Abstract] |  |  |  |
Gross Unsecured Revolving Credit Facility Available | 1,000,000,000 |  |  |
Maximum Letters of credit under the facility | 100,000,000 |  |  |
Increase in revolving credit facility with minimum Increments | 50,000,000 |  |  |
Maximum unsecured revolving credit facility | 1,250,000,000 |  |  |
Unsecured loans received | 0 |  |  |
Outstanding letters of credit facility | 1,596,488,000 | 1,528,603,000 |  |
Gross Letters Of Credit Committments | $ 1,698,340,000 | $ 1,719,120,000 |  |
Debt to tangible net worth ratio | 1 |  |  |
Credit Facility Maturity | November 1, 2023 |  |  |
Series E [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Stated interest rates on debentures | 3.75% |  |  |
Unsecured debentures redeemed, principal amount |  |  | $ 400,000,000 |
Redemption of Series E debentures | $ 24,439,000 |  |  |
Series H [Member] |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |
Unsecured debentures issued, principal amount |  |  |  | $ 400,000,000
Stated interest rates on debentures | 2.95% |  |  | 2.95%
Proceeds of long-term debt | $ 397,500,000 |  |  |
Effective interest rate |  |  |  | 3.05%

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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References No definition available. + Details
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- Definition Gross amount of letters of credit commitments. + References No definition available. + Details
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- Definition Maximum amount of letters of credit available under the credit facility. + References No definition available. + Details
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