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Investment in Films and Television Programs - Schedule of Impairments by Segment (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Segment Reporting Information [Line Items] |  |  |  |  |
Motion Picture |  |  | $ 34.6 | $ 6.2 | $ 1.2
Television Production |  |  | 8.4 | 4.6 | 34.9
Impairments Not Included In Segment Operating Results |  |  | 12.8 | 0.0 | 0.0
Impairment Cost |  |  | $ 55.8 | $ 10.8 | $ 36.1
Film, Monetized on Its Own, and Film Group, Impairment, Statement of Income [Extensible Enumeration] | Total direct operating expense on consolidated statements of operations, Restructuring and other | Total direct operating expense on consolidated statements of operations, Restructuring and other |  |  |
Reportable Segments | Motion Picture |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |
Write downs on investments in films and television programs | $ 0.3 | $ 0.2 |  |  |

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- Definition Amount of impairment loss on capitalized cost for film predominantly monetized on its own and film group. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 926 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 4C -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483154/926-20-50-4C + Details
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