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Investment in Films and Television Programs - Summary of Company's investment in film and television programs (Details) - USD ($) $ in Millions | 12 Months Ended
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Mar. 31, 2027 | Mar. 31, 2026 | Mar. 31, 2025
Released, net of accumulated amortization |  |  |
Schedule Of Estimated Future Amortization Expense Of The Company In Film And Television Programs [Line Items] |  |  |
Estimated future amortization expense | $ 147.5 | $ 189.5 | $ 391.2
Completed and not released |  |  |
Schedule Of Estimated Future Amortization Expense Of The Company In Film And Television Programs [Line Items] |  |  |
Estimated future amortization expense |  |  | $ 139.6

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