Class of Warrant or Right, Ownership Threshold to Exercise, Percentage

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Exercise price per share or per unit of warrants or rights outstanding.

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- Definition

Number of securities into which each warrant or right may be converted. For example, but not limited to, each warrant may be converted into two shares.

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- Definition

Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Par value per share of mandatory redeemable financial instrument classified as liability.

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Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

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The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws.

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Number of shares issued for nonredeemable preferred shares and preferred shares redeemable solely at option of issuer. Includes, but is not limited to, preferred shares issued, repurchased, and held as treasury shares. Excludes preferred shares classified as debt.

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Per share or per unit amount of equity securities issued.

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No definition available.

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Number of new stock issued during the period.

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Capital Stock - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions		3 Months Ended		217 Months Ended
	May 06, 2025	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	May 07, 2025	Mar. 31, 2025	May 13, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized Preferred shares (in shares)		200,000,000		200,000,000
Preferred stock, par value per share (in dollars per share)		$ 0		$ 0
Preferred stock, shares issued (in shares)		0		0
Repurchases of common shares, value		$ 0.0	$ 0.0	$ 288.1
Share repurchase program, remaining authorized repurchase amount		$ 179.9		$ 179.9
Rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Threshold percentage of common stock exercised trigger					15.00%
Number of securities called by each right (in shares)	1				1
Share exercise price (in dollars per share)					$ 32.00
Rights are exercisable or expired (in dollars per share)					$ 0.001
Sponsor Option Agreement
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, par value (in dollars per share)							$ 0.0001
Sponsor Securities Repurchase
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares issued, price per share (in dollars per share)							$ 16.05
New Lionsgate 2025 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued (in shares)	58,000,000
Class A Voting Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized common shares (in shares)						500,000,000
Class B Non-Voting Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Authorized common shares (in shares)						500,000,000
New Lionsgate Common Shares \| Old Lionsgate Class A Shareholders
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued (in shares)	1.12
New Lionsgate Common Shares \| Old Lionsgate Class B Shareholders
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares issued (in shares)	1