Asset Acquisition And Equity Method Investment, Consideration Transferred

No definition available.

Name:	lgfa_AssetAcquisitionAndEquityMethodInvestmentConsiderationTransferred
Namespace Prefix:	lgfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Asset Acquisition And Equity Method Investment, Deferred Consideration

+ References

No definition available.

+ Details

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

- Definition

Business Disposition, Percentage of Interest Sold

+ References

No definition available.

+ Details

Name:	lgfa_BusinessDispositionPercentageOfInterestSold
Namespace Prefix:	lgfa_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Film, Monetized on Its Own, Number of Titles, Acquired Film and Television Libraries

+ References

No definition available.

+ Details

Name:	lgfa_FilmMonetizedOnItsOwnNumberOfTitlesAcquiredFilmAndTelevisionLibraries
Namespace Prefix:	lgfa_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Payments To Acquire Productive Assets And Equity Method Investment

+ References

No definition available.

+ Details

Name:	lgfa_PaymentsToAcquireProductiveAssetsAndEquityMethodInvestment
Namespace Prefix:	lgfa_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- 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

No definition available.

+ Details

Name:	us-gaap_BusinessAcquisitionLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of consideration received or receivable for the disposal of assets and liabilities, including discontinued operation.

+ References

No definition available.

+ Details

Name:	us-gaap_DisposalGroupIncludingDiscontinuedOperationConsideration
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Amount of gain (loss) from sale and disposal of integrated set of activities and assets capable of being conducted and managed for purpose of providing return in form of dividend, lower cost, or other economic benefit to investor, owner, member and participant.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=126954810&loc=d3e3602-108585

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 810
-SubTopic 10
-Section 50
-Paragraph 1B
-Subparagraph (a)
-URI https://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684

+ Details

Name:	us-gaap_GainLossOnSaleOfBusiness
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Amount of divestiture of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (d)
-URI https://asc.fasb.org/extlink&oid=121556970&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 55
-Paragraph 24
-URI https://asc.fasb.org/extlink&oid=122137925&loc=d3e14258-109268

+ Details

Name:	us-gaap_GoodwillWrittenOffRelatedToSaleOfBusinessUnit
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Details

Name:	us-gaap_AssetAcquisitionAxis=lgfa_SpyglassLibraryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_ScheduleOfEquityMethodInvestmentEquityMethodInvesteeNameAxis=lgfa_SpyglassMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	srt_StatementScenarioAxis=srt_ScenarioForecastMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_IncomeStatementBalanceSheetAndAdditionalDisclosuresByDisposalGroupsIncludingDiscontinuedOperationsAxis=lgfa_PantayaMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DisposalGroupClassificationAxis=us-gaap_DisposalGroupNotDiscontinuedOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

Acquisitions and Dispositions (Narrative) (Details) $ in Millions		12 Months Ended
	Jul. 15, 2021 USD ($) title	Mar. 31, 2023 USD ($)	Mar. 31, 2022 USD ($)	Mar. 31, 2021 USD ($)	Jul. 31, 2023 USD ($)	Jul. 31, 2022 USD ($)
Business Acquisition [Line Items]
Gain on sale of Pantaya		$ 0.0	$ 0.0	$ 44.1
Spyglass Library
Business Acquisition [Line Items]
Number of titles acquired \| title	200
Spyglass \| Spyglass Library
Business Acquisition [Line Items]
Purchase price of asset acquisition and preferred equity interest	$ 191.4
Cash paid at closing for asset acquisition and preferred equity interest	$ 171.4
Asset acquisition and preferred equity interest, deferred purchase consideration payable						$ 10.0
Spyglass \| Spyglass Library \| Forecast
Business Acquisition [Line Items]
Asset acquisition and preferred equity interest, deferred purchase consideration payable					$ 10.0
Pantaya \| Disposal Group, Not Discontinued Operations
Business Acquisition [Line Items]
Equity interest sold				75.00%
Cash consideration				$ 123.6
Gain on sale of Pantaya				44.1
Goodwill allocated related to sale of Pantaya				$ 69.0