Share Capital - Summary Of Weighted Average Grant Date Fair Value And Total Fair Value Of RSUs Vested (Detail) - $ / shares	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Weighted Average Grant Date Fair Value And Total Fair Value Of RSUs Vested [Line Items]
Weighted average grant date fair value (per share) of RSUs granted (CAD)	$ 17.84	$ 27.82	$ 10.25

The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(01)
-URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901

Name:	us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:perShareItemType
Balance Type:	na
Period Type:	duration