Name:	lgfa_FilmAndProductionObligationsCurrent
Namespace Prefix:	lgfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The total amount of film obligations and production loans, before unamortized debt issuance costs, if applicable.

No definition available.

Name:	lgfa_FilmAndProductionObligationsGross
Namespace Prefix:	lgfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The total carrying amount of film obligations and production loans, net of unamortized debt issuance costs, if applicable.

No definition available.

Name:	lgfa_FilmAndProductionObligationsNet
Namespace Prefix:	lgfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

No definition available.

Name:	lgfa_FilmAndProductionObligationsNoncurrent
Namespace Prefix:	lgfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

The carrying value of film obligations. Film obligations include minimum guarantees, which represent amounts payable for film rights that have been acquired and certain theatrical marketing obligations for amounts received from third parties that are contractually committed for theatrical marketing expenditures associated with specific titles.

No definition available.

Name:	lgfa_FilmObligations
Namespace Prefix:	lgfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Film obligations and production loans.

No definition available.

Name:	lgfa_FilmObligationsAndProductionLoansAbstract
Namespace Prefix:	lgfa_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

Principal amount of production loans outstanding.

No definition available.

Name:	lgfa_ProductionLoansGross
Namespace Prefix:	lgfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

Amount of unamortized debt discount (premium) and debt issuance costs.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 30
-Section 45
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=64930785&loc=d3e28555-108399