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Revenue - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2024 | Mar. 31, 2024
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized | $ 34.5 | $ 108.6 | $ 113.1
Revenue recognized in period from performance obligations satisfied in previous period | $ 68.6 | 157.9 |
E One |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Business combination, recognized identifiable assets acquired and liabilities assumed, current liabilities, deferred revenue |  |  | 65.6
Starz Business of Lions Gate Entertainment Corp |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Revenues recognized |  | $ 27.2 | 22.6
Television Production |  |  |
Disaggregation of Revenue [Line Items] |  |  |
Contract with customer performance obligation satisfied in the previous period fixed and variable fee |  |  | $ 290.6

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