Film Related Obligations (Narrative) (Details) - USD ($) $ in Millions	6 Months Ended
Sep. 30, 2024	Mar. 31, 2024
Production Loans	$ 1,244.8	$ 1,292.2
Accounts receivable	573.1	753.0
Secured Debt
Production Loans	1,039.1
Unsecured Debt
Production Loans	$ 205.7
Production Loans
Production loans , programming notes, or other loans, weighted average interest rate	5.94%
Programming Notes
Production loans , programming notes, or other loans, weighted average interest rate	7.89%
Production Tax Credit Facility \| Revolving Credit Facility
Credit facility, maximum principal amount	$ 260.0
Collateral	344.2
Credit facility, available amount	$ 0.0
Production Tax Credit Facility \| Revolving Credit Facility \| Base Rate
Basis spread on variable interest rate (as a percent)	0.50%
Production Tax Credit Facility \| Revolving Credit Facility \| SOFR
Effective interest rate	6.45%
Production Tax Credit Facility \| Revolving Credit Facility \| SOFR \| Minimum
Basis spread on variable interest rate (as a percent)	0.10%
Production Tax Credit Facility \| Revolving Credit Facility \| SOFR \| Maximum
Basis spread on variable interest rate (as a percent)	0.25%
Production Tax Credit Facility \| Revolving Credit Facility \| Applicable Margin
Basis spread on variable interest rate (as a percent)	1.50%
Backlog Facility \| Revolving Credit Facility
Debt instrument, term	2 years 90 days
Backlog Facility \| Revolving Credit Facility \| SOFR \| Minimum
Basis spread on variable interest rate (as a percent)	0.10%
Backlog Facility \| Revolving Credit Facility \| SOFR \| Maximum
Basis spread on variable interest rate (as a percent)	0.25%
Backlog Facility \| Revolving Credit Facility \| Applicable Margin \| Minimum
Basis spread on variable interest rate (as a percent)	1.25%
Backlog Facility \| Revolving Credit Facility \| Applicable Margin \| Maximum
Basis spread on variable interest rate (as a percent)	1.50%
Backlog Facility \| Secured Debt
Credit facility, maximum principal amount	$ 175.0
Credit facility, outstanding amount	160.2	175.0
Credit facility, available amount	$ 0.0
Backlog Facility \| Secured Debt \| SOFR
Effective interest rate	6.10%
Backlog Facility \| Secured Debt \| Applicable Margin
Basis spread on variable interest rate (as a percent)	1.15%
Distribution Loan Agreement \| Loans Payable
Production loans , programming notes, or other loans, weighted average interest rate	6.18%
Loan amount	$ 113.0	$ 112.3
Accounts receivable	72.7
Contracted receivables not yet reflected as accounts receivable	65.6
Distribution Agreement Loan One \| Loans Payable
Loan amount	55.1
Distribution Agreement Loan Two \| Loans Payable
Loan amount	57.9
Film Library Facility \| Secured Debt
Credit facility, maximum principal amount	$ 161.9
Film Library Facility \| Secured Debt \| Base Rate
Basis spread on variable interest rate (as a percent)	1.25%
Film Library Facility \| Secured Debt \| SOFR
Effective interest rate	7.17%
Film Library Facility \| Secured Debt \| SOFR \| Minimum
Basis spread on variable interest rate (as a percent)	0.11%
Floor on SOFR (as a percent)	0.25%
Film Library Facility \| Secured Debt \| SOFR \| Maximum
Basis spread on variable interest rate (as a percent)	0.26%
Film Library Facility \| Secured Debt \| Applicable Margin
Basis spread on variable interest rate (as a percent)	2.25%

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Principal amount of production and related loans outstanding.

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- Definition

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average interest rate of debt outstanding.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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The effective interest rate at the end of the reporting period.

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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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Amount of borrowing capacity currently available under the credit facility (current borrowing capacity less the amount of borrowings outstanding).

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Amount of long-term loans payable classified as other.

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Amount due from parties in nontrade transactions, classified as other.

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