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Share-Based Compensation- Summary Of Weighted Average Grant-Date Fair Value Of Options Granted (Parenthetical) (Details) - Two Thousand And Nineteen Lions Gate Plan - USD ($) shares in Millions, $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Share based compensation by share based award aggregate intrinsic value of stock options exercised during the period | $ 0.2 | $ 1.1 | $ 2.1
Maximum | Stock options |  |  |
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items] |  |  |
Shares paid for tax witholding for share based compensation |  | 0.1 | 0.1

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