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Additional Financial Information - Narrative (Details) - USD ($) $ in Millions | 1 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jul. 31, 2023 | Dec. 31, 2019 | Mar. 31, 2024 | Mar. 31, 2023 | Mar. 31, 2022 | Sep. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Proceeds from Accounts Receivable Securitization | $ 100.0 |  |  |  |  |
Employee Related Liabilities Current And Noncurrent |  |  | $ 116.2 | $ 102.8 |  |
Interest Paid During the Year |  |  | 196.9 | 137.7 | $ 85.0 |
Income Taxes Paid During the Year |  |  | 22.8 | 14.3 | 13.9 |
Employee-related liabilities |  |  | 116.2 |  |  | $ 25.2
Individual Monetization Agreements | Trade Accounts Receivable |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Derecognized accounts receivable for which the company continues to service, amount outstanding |  |  |  |  |  | 490.5
Pooled Monetization Agreements | Trade Accounts Receivable |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Derecognized accounts receivable for which the company continues to service, amount outstanding |  |  |  |  |  | 0.0
Revolving agreement, maximum amount of receivables allowed to transfer |  | $ 100.0 |  |  |  |
Pooled Monetization Agreement |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accounts receivable, net |  |  | 0.0 | 52.3 |  |
Trade Accounts Receivable |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Accounts receivable, net |  |  | 449.2 | 350.9 |  |
Trade Accounts Receivable | Individual Monetization Agreements |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Derecognized accounts receivable for which the company continues to service, amount outstanding |  |  | 449.2 |  |  |
Trade Accounts Receivable | Pooled Monetization Agreements |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Derecognized accounts receivable for which the company continues to service, amount outstanding |  |  | 0.0 |  |  |
Starz Business of Lions Gate Entertainment Corp |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Line Items] |  |  |  |  |  |
Derecognized accounts receivable for which the company continues to service, amount outstanding |  |  | 164.2 | 189.6 |  | 136.3
Interest paid |  |  | 45.6 | 59.0 | 49.9 |
Income taxes paid gross |  |  | 3.0 | 8.6 | $ 3.0 |
Employee-related liabilities |  |  | $ 28.4 | $ 23.2 |  | $ 13.0

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