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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, 2022 | Mar. 31, 2021 | Mar. 31, 2020
Segment Reporting Information [Line Items] |  |  |
Acquisition of investment in films and television programs and program rights | $ 2,211.7 | $ 1,616.7 | $ 1,545.3
Reportable Segments | Motion Picture |  |  |
Segment Reporting Information [Line Items] |  |  |
Acquisition of investment in films and television programs and program rights | 465.0 | 339.8 | 349.8
Reportable Segments | Television Production |  |  |
Segment Reporting Information [Line Items] |  |  |
Acquisition of investment in films and television programs and program rights | 1,287.0 | 856.1 | 743.3
Reportable Segments | Media Networks |  |  |
Segment Reporting Information [Line Items] |  |  |
Acquisition of investment in films and television programs and program rights | 1,134.6 | 625.1 | 640.7
Intersegment Eliminations |  |  |
Segment Reporting Information [Line Items] |  |  |
Acquisition of investment in films and television programs and program rights | $ (674.9) | $ (204.3) | $ (188.5)

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