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Restructuring and Other - Summary of Changes in the Restructuring and Other Severance Liability (Parenthetical) (Details) - USD ($) $ in Millions	6 Months Ended	12 Months Ended
	Sep. 30, 2024	Mar. 31, 2024
Severance Liability		$ 19.3
Starz Business of Lions Gate Entertainment Corp
Severance Liability	$ 0.8	$ 1.6

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- Definition

Severance liability.

+ References

No definition available.

+ Details

Name:	lgfa_SeveranceLiability
Namespace Prefix:	lgfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

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- Details

Name:	dei_LegalEntityAxis=lgfa_StarzBusinessOfLionsGateEntertainmentCorpMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: