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Description of Business, Basis of Presentation and Significant Accounting Policies (Investment in Films and Television Programs and Licensed Program Rights) (Details) - USD ($) $ in Millions | 12 Months Ended
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Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |
Capitalized interest for films and television programs produced | $ 21.0 | $ 28.1 | $ 12.8
Ultimate revenue, estimates used, maximum term, motion picture | 10 years |  |
Ultimate revenue, estimates used, maximum term, television series | 10 years |  |
Ultimate revenue, estimates used, term, television series in production | 5 years |  |
Ultimate revenue, estimates used, maximum term, acquired libraries | 20 years |  |
Projects in development, potential trigger for write-off of development costs, time period from date of initial investment | 3 years |  |

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- Definition Amount of interest capitalized during the period. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483013/835-20-50-1 + Details
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