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Risk Management Activities - Maximum Exposure to Credit Risk (Details) - CAD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Disclosure of credit risk exposure [line items]
Maximum credit exposure	$ 64	$ 37
Credit risk
Disclosure of credit risk exposure [line items]
Maximum credit exposure	2,621
Credit risk | Trade and other receivables
Disclosure of credit risk exposure [line items]
Maximum credit exposure	$ 1,585
Trade and other receivables | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	100.00%
Maximum credit exposure	$ 4
Trade and other receivables | Investment grade (Per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	87.00%
Trade and other receivables | Non-investment grade (Per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	13.00%
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	$ 129
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	$ 870
Risk management assets | Investment grade (Per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	92.00%
Risk management assets | Non-investment grade (Per cent) | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	8.00%
Loan receivable | Credit risk
Disclosure of credit risk exposure [line items]
Credit risk, allocation percentage	100.00%
Maximum credit exposure	$ 37
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 2022-03-24
-Paragraph 35K
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_35K_a&doctype=Standard
-URIDate 2022-03-24

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 36
-Subparagraph a
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_36_a&doctype=Standard&book=b
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- Definition

Credit Risk, Allocation Percentage

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