Investment in Films and Television Programs - Schedule of Capitalized Cost for Film, Monetized on its Own and Film, Monetized in Film Group (Details) - USD ($) $ in Millions	Mar. 31, 2025	Mar. 31, 2024
Film Group Monetization
Released, net of accumulated amortization	$ 987.3	$ 992.2
Completed and not released	135.1	225.4
In progress	783.0	644.4
Total	$ 1,992.6	$ 1,929.0

Amount of capitalized film cost for film predominantly monetized with other films and license agreements.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483154/926-20-50-2

+ Details

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Balance Type:	debit
Period Type:	instant

- References

No definition available.

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- Definition

Amount of capitalized film cost for completed and not released film predominantly monetized with other films and license agreements.

+ References

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of capitalized film cost incurred in production of film predominantly monetized with other films and license agreements.

+ References

+ Details

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Namespace Prefix:	us-gaap_
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Period Type:	instant

- Definition

Amount of capitalized film cost for released film predominantly monetized with other films and license agreements.

+ References

+ Details

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Data Type:	xbrli:monetaryItemType
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Period Type:	instant