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Segment Information - Schedule of Adjusted Depreciation and Amortization (Parenthetical) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Allocated share based compensation expenses | $ 8.6 | $ 13.5 | $ 17.0 |  | $ 21.4 |  | $ 62.5 | $ 73.4 | $ 70.2
Share-based compensation |  |  | 32.5 |  | 29.5 |  | 62.5 | 73.4 | 70.2
Starz Business of Lions Gate Entertainment Corp |  |  |  |  |  |  |  |  |
Allocated share based compensation expenses |  |  | 9.6 | [1] | 13.0 | [1] | 24.6 | 25.7 | 28.0
Share-based compensation |  |  | 9.6 |  | 13.0 |  | 24.6 | 25.7 | 28.0
Starz Business of Lions Gate Entertainment Corp | Lions Gate Corporate Employee Share Based Compensation |  |  |  |  |  |  |  |  |
Allocated share based compensation expenses |  |  |  |  |  |  | $ 5.6 | $ 9.7 | $ 7.8
Share-based compensation |  |  | $ 0.7 |  | $ 2.8 |  |  |  |
[1] | Entered into during the three months ended September 30, 2024.

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