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Other Assets - Additional Information (Details) - CAD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Disclosure of investments held for self insured liabilities maturity of bond portfolio at fair value [line items]
Unrealized (losses) gains on equity securities	$ (18.0)	$ 13.9
Net unrealized loss on FVOCI financial assets	$ 0.6	$ 2.9
Bottom of range
Disclosure of investments held for self insured liabilities maturity of bond portfolio at fair value [line items]
Bonds interest rate	0.75%	0.80%
Top of range
Disclosure of investments held for self insured liabilities maturity of bond portfolio at fair value [line items]
Bonds interest rate	8.00%	4.55%

X

- Definition

The gains (losses) on financial assets at fair value through profit or loss. [Refer: Financial assets at fair value through profit or loss]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-IssueDate 2022-03-24
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- Definition

The gains (losses) recognised in other comprehensive income on financial assets measured at fair value through other comprehensive income applying paragraph 4.1.2A of IFRS 9, net of tax, before reclassification adjustments. [Refer: Financial assets measured at fair value through other comprehensive income; Other comprehensive income]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

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Disclosure of investments held for self insured liabilities maturity of bond portfolio at fair value.

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