Development Costs, Write Off

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Amount of expenses associated with exit or disposal activities pursuant to an authorized plan. Includes, but is not limited to, one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, and relocating employees, and termination benefits associated with an ongoing benefit arrangement. Excludes expenses associated with special or contractual termination benefits, a discontinued operation or an asset retirement obligation.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-SubTopic 10
-Topic 230
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

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- Definition

Amount of impairment loss on capitalized cost for film predominantly monetized on its own and film group.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483154/926-20-50-4C

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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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Investment in Films and Television Programs - (Impairments) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Content impairments related to exiting local production in certain international territories	$ 7.3		$ 7.3
LIONS GATE ENTERTAINMENT CORP. [Member]
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	1.5	$ 79.5	17.3	$ 351.5	$ 420.3	$ 390.1	$ 73.0
Development costs, written off					12.8
Content impairments related to exiting local production in certain international territories			7.3
Not included in segment operating results \| LIONS GATE ENTERTAINMENT CORP. [Member]
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	0.9	77.8	(1.9)	317.4
Not included in segment operating results \| Direct Operating Expense \| LIONS GATE ENTERTAINMENT CORP. [Member]
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights					0.0	0.0	36.9
Not included in segment operating results \| Restructuring and Other \| LIONS GATE ENTERTAINMENT CORP. [Member]
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights					377.3	379.3	0.0
Motion Picture \| Reportable Segments \| LIONS GATE ENTERTAINMENT CORP. [Member]
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	0.2	0.5	18.8	27.5	34.6	6.2	1.2
Television Production \| Reportable Segments \| LIONS GATE ENTERTAINMENT CORP. [Member]
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	$ 0.4	$ 1.2	$ 0.4	$ 6.6	$ 8.4	$ 4.6	$ 34.9