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Vesting Term

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements. Represents currently earned compensation under compensation arrangements that is not actually paid until a later date.

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

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Net number of non-option equity instruments granted to participants.

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Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Value of forfeited shares granted under share-based payment arrangement. Excludes employee stock ownership plan (ESOP).

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Period Type:

STOCK-BASED COMPENSATION - (Additional Information) (Detail) $ / shares in Units, $ in Millions	1 Months Ended	3 Months Ended						6 Months Ended		12 Months Ended
	Mar. 31, 2024	Jun. 30, 2026 ៛ / shares $ / shares shares	Mar. 31, 2026 shares	Dec. 31, 2025 USD ($) shares	Jun. 30, 2025 ៛ / shares shares	Sep. 30, 2023 shares	Jun. 30, 2023 shares	Jun. 30, 2026 USD ($) shares	Jun. 30, 2025 ៛ / shares shares	Dec. 31, 2025 USD ($) shares	Jun. 30, 2026 USD ($) $ / shares shares	Jun. 30, 2025 $ / shares shares	Dec. 31, 2024 shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for future issuance											30,350,000
Vesting term							Dec. 31, 2026
Shares Issuable on Debetutres Principal Amount Settled in Common Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Securities excluded from calculation of net income (loss) per share		20,600,000			38,600,000			20,600,000	38,600,000
Restricted Stock Units Time Based [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Share-based compensation arrangement by share-based payment award, award requisite service period								3 years
Weighted average fair value of the RSUs granted \| ៛ / shares					៛ 0.82				៛ 0.82
Granted								150,000	25,000
Number of PSUs outstanding				8,181,585	8,515,483				8,515,483	8,181,585	3,870,986	8,515,483	10,260,791
Performance-Based Restricted Share Units [Member] \| 2021 PRSUs [ Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
% of PRSUs vesting	66.70%
Deferred Share Units ("DSUs") [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted								560,883	544,081
Number of PSUs outstanding				3,464,988	4,577,975				4,577,975	3,464,988	4,025,871	4,577,975	4,033,894
Deferred Compensation Liability, Current and Noncurrent \| $				$ 0.5						$ 0.5	$ 0.4
Securities excluded from calculation of net income (loss) per share		3,000,000
Deferred Share Units ("DSUs") [Member] \| Shares Issuable on Debetutres Principal Amount Settled in Common Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Securities excluded from calculation of net income (loss) per share		3,000,000
New Deferred Share Units ("DSUs") [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Deferred Compensation Liability, Current and Noncurrent \| $				$ 1.4						$ 1.4	$ 1.7
New Deferred Share Units ("DSUs") [Member] \| Granted Under The 2024 LTIP
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average fair value of the RSUs granted \| (per share)		៛ 0.74			៛ 0.92				៛ 0.92		$ 0.52	$ 0.66
New Deferred Share Units ("DSUs") [Member] \| Shares Issuable on Debetutres Principal Amount Settled in Common Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Securities excluded from calculation of net income (loss) per share					3,200,000			2,900,000	3,200,000
Performance Share Units ("PSUs") [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted								0	0
Number of options, Forfeited			922,804			738,553		922,804
Number of PSUs outstanding				2,597,608	1,845,608				1,845,608	2,597,608	1,674,804	1,845,608	1,845,608
Options, Grants in Period				752,000
Performance Share Units ("PSUs") [Member] \| Chief Transformation Officer [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares Granted, Value, Share-Based Payment Arrangement, Forfeited \| $								$ 0.6		$ 0.6
Performance Share Units ("PSUs") [Member] \| Maximum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
% of PRSUs vesting							190.00%
Options, Grants in Period							4,909,907
Performance period date							Dec. 31, 2026
Performance Share Units ("PSUs") [Member] \| Median [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
% of PRSUs vesting							160.00%
Performance Share Units ("PSUs") [Member] \| Minimum [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
% of PRSUs vesting							100.00%
Options, Grants in Period							2,584,161
Performance period date							Jan. 01, 2023
Performance Share Units ("PSUs") [Member] \| Shares Issuable on Debetutres Principal Amount Settled in Common Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Securities excluded from calculation of net income (loss) per share		900,000			1,800,000			900,000	1,800,000
Restricted Share Units ("RSUs") [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Granted		150,000							0
Number of PSUs outstanding													45,177
weighted average fair value \| $ / shares		៛ 0.77
Restricted Share Units ("RSUs") [Member] \| Shares Issuable on Debetutres Principal Amount Settled in Common Shares [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Securities excluded from calculation of net income (loss) per share		700,000			1,000,000			2,100,000	6,700,000
Equity Settled Awards [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Securities excluded from calculation of net income (loss) per share		600,000