Share-Based Compensation - Schedule of Activity for RSUs and PSUs (Details) - RSL Equity Plans	6 Months Ended
Sep. 30, 2026 shares
Number of RSUs
Number of RSUs and PSUs
Non-vested balance, beginning (in shares)	12,606,011
Granted (in shares)	2,558,381
Vested (in shares)	(3,208,347)
Forfeited (in shares)	(331,090)
Non-vested balance, ending (in shares)	11,624,955
Number of PSUs
Number of RSUs and PSUs
Non-vested balance, beginning (in shares)	48,187,236
Granted (in shares)	0
Vested (in shares)	0
Forfeited (in shares)	0
Non-vested balance, ending (in shares)	48,187,236

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

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- Definition

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).

+ References

+ Details

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(i)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(ii)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

+ References

+ Details

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