Common shares reserved for performance options and capped value appreciation rights.

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Share based compensation right to repurchase percentage.

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Sharebased Compensation Arrangement By Sharebased Payment Award Aggregate Repurchase Price

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- Definition

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

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Aggregate number of common shares reserved for future issuance.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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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

Amount of cost to be recognized for option under share-based payment arrangement.

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- Definition

The aggregate value of all restricted investments.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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Description of terms of share-based payment arrangement. Includes, but is not limited to, type of award or grantee and reason for issuance.

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Date the equity-based award expires, in YYYY-MM-DD format.

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- Definition

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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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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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term for vested portions of options outstanding and currently exercisable or convertible, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Number of options vested.

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No definition available.

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Share-Based Compensation - Additional Information (Detail) - USD ($)	3 Months Ended		12 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Mar. 31, 2021	Mar. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 19,269,000	$ 14,278,000	$ 84,958,000	$ 67,751,000
RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			$ 0
Grant expiration period			8 years
Unrecognized compensation expense related to non-vested stock			$ 83,800,000
Performance Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			0
Unrecognized compensation expense related to non-vested stock			337,800,000
CVARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense			$ 0
Grant expiration date			Mar. 31, 2026
Grant, Description			each CVAR pays in common shares the excess of (a) the lesser of (i) the fair market value of a common share as of the settlement date or (ii) the cap of $37.10, over (b) the hurdle price of either $18.70 or $33.63, as applicable to each grant.
Unrecognized compensation expense			$ 23,000,000.0
Performance RSU [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	0	0	12,300,000
Unrecognized compensation expense			2,800,000
RSL Common Share Award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 800,000		$ 100,000
Remaining weighted-average service period			3 years 4 months 20 days
Unrecognized compensation expense			$ 6,900,000
Restricted common stock fair value			$ 15,600,000
2015 EIP [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for future issuance	22,800,000		22,800,000
Common shares available for grant	786,125		10,296,392
Share-based compensation expense			$ 32,300,000	$ 31,800,000
Unrecognized compensation expense related to non-vested stock			$ 70,800,000
Remaining weighted-average service period			2 years 11 months 15 days
Stock options vested			5,533,848	4,123,953
2015 EIP [Member] \| Special Reserve [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for future issuance			26,558,238
Common shares reserved for performance options and capped value appreciation rights	26,558,238
Common shares available for grant	0		0
2015 EIP [Member] \| RSUs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 0	0
2015 EIP [Member] \| Performance Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	0	0
2015 EIP [Member] \| CVARs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	0	0
2015 EIP [Member] \| Stock Option [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	10,300,000	7,800,000
Grant contractual term			6 years 5 months 26 days
Subsidiary EIPs [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	$ 8,200,000	$ 6,500,000	$ 29,100,000	$ 22,100,000
Grant vesting period	4 years		4 years
Grant contractual term	10 years		10 years
pRSU Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common shares reserved for future issuance	200,000		200,000
Grant expiration period	8 years		8 years
Equity repurchase			$ 17,044,465
Percentage of share repurchased			11.23%