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Risk Management Activities - Maximum Exposure to Credit Risk (Details) - CAD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Disclosure of credit risk exposure [line items]
Maximum credit exposure	$ 23	$ 64
Credit risk
Disclosure of credit risk exposure [line items]
Maximum credit exposure	1,207
Credit risk | Trade and other receivables
Disclosure of credit risk exposure [line items]
Maximum credit exposure	$ 807
Trade and other receivables | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	100.00%
Trade and other receivables | Investment grade (per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	95.00%
Trade and other receivables | Non-investment grade (per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	5.00%
Long-term portion of finance lease receivables | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	100.00%
Maximum credit exposure	$ 171
Long-term portion of finance lease receivables | Investment grade (per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	100.00%
Long-term portion of finance lease receivables | Non-investment grade (per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	0.00%
Risk management assets | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	100.00%
Maximum credit exposure	$ 203
Risk management assets | Investment grade (per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	75.00%
Risk management assets | Non-investment grade (per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	25.00%
Loan receivable | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	100.00%
Maximum credit exposure	$ 26
Loan receivable | Investment grade (per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	0.00%
Loan receivable | Non-investment grade (per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	100.00%

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- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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- Definition

The amount that best represents the maximum exposure to credit risk without taking into account any collateral held or other credit enhancements (for example, netting agreements that do not qualify for offset in accordance with IAS 32). [Refer: Credit risk [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2023-01-01
-Paragraph 35K
-Subparagraph a
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-URIDate 2023-03-23

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- Definition

Credit Risk, Allocation Percentage

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