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Valuation and Qualifying Accounts (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Accounts receivable previously reserved from customers in Russia | $ 0.5 |  |
Valuation allowance, opening balance from acquisition of eOne | 187.0 |  |
Receivables Impacted By Russia's Invasion Of Ukraine |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Accounts receivable previously reserved from customers in Russia |  | $ 2.5 |
Returns and Allowances |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | 17.6 | 19.3 | $ 26.1
Charged to Costs and Expenses | 33.1 | 40.6 | 44.4
Charged to Other Accounts | 0.0 | 0.0 | 0.0
Deductions | (32.8) | (42.3) | (51.2)
Balance at End of Period | 17.9 | 17.6 | 19.3
Provision for Doubtful Accounts |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | 9.2 | 11.5 | 6.5
Charged to Costs and Expenses | 0.5 | 1.1 | 5.3
Charged to Other Accounts | 1.3 | 0.0 | 0.0
Deductions | (3.8) | (3.4) | (0.3)
Balance at End of Period | 7.2 | 9.2 | 11.5
Deferred Tax Valuation Allowance |  |  |
SEC Schedule, 12-09, Movement in Valuation Allowances and Reserves [Roll Forward] |  |  |
Balance at Beginning of Period | 455.7 | 362.8 | 350.9
Charged to Costs and Expenses | 164.7 | 115.9 | 40.4
Charged to Other Accounts | 187.9 | (23.0) | (28.5)
Deductions | 0.0 | 0.0 | 0.0
Balance at End of Period | $ 808.3 | $ 455.7 | $ 362.8

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