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- Definition

Disposal Group, Including Discontinued Operation, Shares Conversion Rate Used For Dissolution

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- Definition

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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- Definition

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

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

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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- Definition

Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements.

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Ratio applied to the conversion of stock split, for example but not limited to, one share converted to two or two shares converted to one.

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Description of Business, Basis of Presentation and Significant Accounting Policies (Details)		3 Months Ended	6 Months Ended	12 Months Ended
	May 06, 2025	Sep. 30, 2025 USD ($) segment	Sep. 30, 2025 USD ($) segment	Mar. 31, 2024 USD ($)	Mar. 31, 2025 USD ($)	Aug. 27, 2024	May 31, 2024 USD ($)
Debt Instrument
Number of reportable segments \| segment		1	1,000,000
Stock split, conversion ratio	0.0667
Segment Reporting, Reconciling Item, Corporate Nonsegment \| Related Party
Debt Instrument
Business separation cost				$ 10,000,000
Senior Notes
Debt Instrument
Debt instrument, interest rate, stated percentage							5.50%
Existing Notes \| Senior Notes
Debt Instrument
Debt instrument, interest rate, stated percentage						5.50%	5.50%
Long-term debt		$ 325,100,000	$ 325,100,000				$ 325,100,000
Exchange Notes \| Senior Notes
Debt Instrument
Debt instrument, interest rate, stated percentage							5.50%
Long-term debt					$ 389,900,000		$ 389,900,000
5.500% Senior Notes due 2029 \| Senior Notes
Debt Instrument
Long-term debt		$ 325,100,000	$ 325,100,000		$ 715,000,000.0		625,100,000
Credit Agreement \| Secured Debt
Debt Instrument
Revolving credit facility, maximum borrowing capacity							300,000,000
Credit Agreement \| Revolving Credit Facility
Debt Instrument
Revolving credit facility, maximum borrowing capacity							$ 150,000,000
New Lionsgate \| Old Lionsgate Class A Shareholders
Debt Instrument
Shares conversion rate (in shares)	1.12
New Lionsgate \| Old Lionsgate Class B Shareholders
Debt Instrument
Shares conversion rate (in shares)	1
Starz Entertainment Corp \| Old Lionsgate Class A Shareholders
Debt Instrument
Shares conversion rate (in shares)	1.12
Starz Entertainment Corp \| Old Lionsgate Class B Shareholders
Debt Instrument
Shares conversion rate (in shares)	1