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Aggregate carrying value as of the balance sheet date of the liabilities for stock option plans and other equity-based compensation arrangements payable after one year (or the operating cycle, if longer).

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The number of grants made 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).

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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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Number of shares authorized for issuance under share-based payment arrangement.

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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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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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Percentage of vesting of award under share-based payment arrangement.

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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Stock-Based Compensation - Narrative (Details) $ / shares in Units, $ in Millions					1 Months Ended	3 Months Ended		9 Months Ended
	Jan. 02, 2026 shares	Jan. 02, 2025 shares	Apr. 16, 2024 shares	Jan. 02, 2024 shares	Dec. 31, 2023	Sep. 30, 2026 USD ($) equity_compensation_plan $ / shares shares	Sep. 30, 2025 USD ($) $ / shares	Sep. 30, 2026 USD ($) equity_compensation_plan $ / shares shares	Sep. 30, 2025 USD ($) $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense \| $						$ 17.1		$ 17.1
Unrecognized compensation expense related to options outstanding, weighted average period for expense to be recognized								1 year 10 months 24 days
Number of equity compensation plans \| equity_compensation_plan						2		2
Automatic increase in shares to be issued								4.00%
Number of shares authorized for grant (in shares)						62,800,000		62,800,000
Number of shares available for grant (in shares)						5,600,000		5,600,000
Weighted average grant date fair value (in USD per share) \| $ / shares						$ 1.11	$ 0.91	$ 1.16	$ 0.79
Options, vested in period, fair value \| $						$ 0.7	$ 0.1	$ 4.5	$ 4.9
Granted (in shares)	3,123,201							10,288,285
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	9,369,604	1,388,889						9,369,604
Performance period		3 years
PSUs \| 2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		3,314,445	256,885	615,467
PSUs \| Chief Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	9,369,604
Performance period	3 years
PSUs \| Minimum \| 2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage of the awards granted					0.00%
PSUs \| Maximum \| 2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage of the awards granted					200.00%
Share-Based Payment Arrangement, Options Subject To Letter Agreement Regarding Equity Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	2,000,000
Suspension period beyond original expiration date	90 days
Performance Shares Subject To Letter Agreement Regarding Equity Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)	6,000,000	1,000,000
Reduction in stock-based compensation expense \| $								$ 0.4
Stock-based compensation recorded in other non-current liability \| $						$ 0.9		$ 0.9