Net Loss Per Share - Narrative (Details) - shares		3 Months Ended
May 06, 2025	Jun. 30, 2026	Jun. 30, 2025
Anti-dilutive shares issuable [Line Items]
Anti-dilutive shares excluded from calculation of diluted earnings per share due to net loss (in shares)		10,400,000	2,400,000
Anti-dilutive shares issuable (in shares)		18,900,000	20,400,000
Old Lionsgate Class A Shareholders \| New Lionsgate Common Shares
Anti-dilutive shares issuable [Line Items]
New common stock issued, per old Lionsgate shares	1.12

Antidilutive Securities Excluded From Calculation of Diluted EPS Due to Net Loss, Amount

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- Definition

Disposal Group, Including Discontinued Operations, Stock Issued, Shares

+ References

No definition available.

+ Details

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482662/260-10-50-1

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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.

+ References

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