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v3.24.1

Long term debt (Narrative) (Details) |  | 12 Months Ended
--- | --- | ---
Nov. 07, 2023 USD ($) | Dec. 31, 2023 CAD ($) | Dec. 31, 2022 CAD ($)
Disclosure of detailed information about borrowings [line items] |  |  |
Proceeds of long-term debt |  | $ 816,582,000 | $ 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 | 0
Outstanding letters of credit facility |  | 1,383,689,000 | 1,593,379,000
Gross Letters Of Credit Commitments |  | $ 1,771,663,000 | $ 1,756,754,000
Debt to tangible net worth ratio |  | 1 |
Credit Facility Maturity |  | October 1, 2027 |
Westinghouse Electric Company [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Percent acquired in acquisition | 49.00% |  |
US Term Loan [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Proceeds of long-term debt | $ 600,000,000 |  |
US Term Loan, Tranche One [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Proceeds of long-term debt | 300,000,000 |  |
US Term Loan, Tranche One [Member] | Floating interest rate [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Borrowing, interest rate basis |  | 1.80% |
US Term Loan Tranche Two [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Proceeds of long-term debt | $ 300,000,000 |  |
US Term Loan Tranche Two [Member] | Floating interest rate [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Borrowing, interest rate basis |  | 2.05% |

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- Definition Date when the credit facility is schedule to expire, in CCYY-MM-DD. + References No definition available. + Details
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- Definition Letters of credit amount outstanding at a given period. + References No definition available. + Details
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