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Segment Information (Acquisition of Investment in Films and Television Programs and Program Rights by Segment) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022 | Mar. 31, 2021
Segment Reporting Information [Line Items] |  |  |
Acquisition of investment in films and television programs and program rights | $ 1,979.2 | $ 2,211.7 | $ 1,616.7
Reportable Segments | Motion Picture |  |  |
Segment Reporting Information [Line Items] |  |  |
Acquisition of investment in films and television programs and program rights | 483.6 | 465.0 | 339.8
Reportable Segments | Television Production |  |  |
Segment Reporting Information [Line Items] |  |  |
Acquisition of investment in films and television programs and program rights | 1,082.0 | 1,287.0 | 856.1
Reportable Segments | Media Networks |  |  |
Segment Reporting Information [Line Items] |  |  |
Acquisition of investment in films and television programs and program rights | 1,173.0 | 1,134.6 | 625.1
Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Acquisition of investment in films and television programs and program rights | $ (759.4) | $ (674.9) | $ (204.3)

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