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- Definition

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- Definition

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Period of trailing trading days, weighted average trading price used to calculate performance Condition of PSUs in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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- Definition

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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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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- Definition

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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Share-Based Compensation - Narrative (Details) $ / shares in Units, $ in Millions		1 Months Ended	3 Months Ended		6 Months Ended
	Nov. 09, 2026	Jun. 30, 2026 $ / shares shares	Sep. 30, 2026 USD ($) tranche shares	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($) tranche shares	Sep. 30, 2025 USD ($)
Share-Based Compensation and Other Compensation Plans [Line Items]
Term of trailing trading days, weighted average price use to calculate performance condition of PSUs		30 days
Number of PSUs
Share-Based Compensation and Other Compensation Plans [Line Items]
Number of vesting tranches \| tranche			6		6
PSUs holding period before common shares may be sold by executive					2 years
Number of PSUs \| Subsequent Event
Share-Based Compensation and Other Compensation Plans [Line Items]
PSUs waived holding period before common shares may be sold by executive	2 years
Number of PSUs \| Share-Based Payment Arrangement, Sixth And Final Tranche
Share-Based Compensation and Other Compensation Plans [Line Items]
Share price (in dollars per share) \| $ / shares		$ 30.00
RSL 2021 EIP
Share-Based Compensation and Other Compensation Plans [Line Items]
Common shares available for future grants (in shares)			58,798,689		58,798,689
Senior Executive Compensation Program \| Number of PSUs
Share-Based Compensation and Other Compensation Plans [Line Items]
PSUs performance condition satisfied (in shares)		15,298,215
PSUs satisfied performance condition, shares (in shares)		43,350,000
Subsidiary Equity Incentive Plans
Share-Based Compensation and Other Compensation Plans [Line Items]
Share-based compensation expense \| $			$ 14.0	$ 14.4	$ 28.8	$ 33.7