Acquisition - Schedule of Business Acquisition Pro Forma Information (Detail) $ in Millions	12 Months Ended
Mar. 31, 2024 USD ($)
Business Acquisition [Line Items]
Revenues	$ 3,380.0
Net loss attributable to Lions Gate Entertainment Corp. shareholders	(376.5)
Entertainment One Television and Film Business ("eOne") \| LIONS GATE ENTERTAINMENT CORP [Member]
Business Acquisition [Line Items]
Revenues	4,410.5
Net loss attributable to Lions Gate Entertainment Corp. shareholders	$ (1,385.9)

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479907/805-20-50-5

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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 805
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (h)(2)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479328/805-10-50-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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