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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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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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- Definition

The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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

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Intrinsic value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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No definition available.

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Expected term of 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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EQUITY INCENTIVE PLAN AND STOCK-BASED COMPENSATION - Narrative (Details) - USD ($) $ in Millions	1 Months Ended		9 Months Ended	45 Months Ended
	Aug. 31, 2023	Feb. 28, 2023	Sep. 30, 2023	Sep. 30, 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options granted in period (shares)				0
Unvested RSUs and PRSUs 1
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unamortized compensation costs, net of estimated forfeitures related to restricted stock unit and performance share			$ 142.3	$ 142.3
Unamortized compensation costs related to unvested stock options, expected period of recognition (in years)			1 year 10 months 24 days
Intrinsic value of equity other than options nonvested			$ 173.4	173.4
Performance Based Restricted Stock Units ("PRSU")
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total unamortized compensation costs, net of estimated forfeitures related to restricted stock unit and performance share			$ 41.9	41.9
Unamortized compensation costs related to unvested stock options, expected period of recognition (in years)			2 years 3 months 18 days
Intrinsic value of equity other than options nonvested			$ 85.6	$ 85.6
Expected term (in years)	2 years 10 months 24 days	2 years 10 months 24 days
Risk-free interest rate	4.40%	4.50%
Expected volatility	80.10%	83.80%
Dividend yield	0.00%	0.00%
Performance Based Restricted Stock Units ("PRSU") \| 2023 Awards \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance threshold (in percentage)		15.00%
Performance Based Restricted Stock Units ("PRSU") \| 2023 Awards \| Minimum \| Awarded February 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target to be earned at performance threshold (in percentage)		50.00%
Performance Based Restricted Stock Units ("PRSU") \| 2023 Awards \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance threshold (in percentage)		25.00%
Performance Based Restricted Stock Units ("PRSU") \| 2023 Awards \| Maximum \| Awarded February 2023
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance target to be earned at performance threshold (in percentage)		200.00%