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Debt - Schedule of Loss on Extinguishment of Debt (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Mar. 31, 2024	Mar. 31, 2023	Mar. 31, 2022
Extinguishment of Debt [Line Items]
Loss on extinguishment of debt	$ (1.0)	$ 0.0	$ (1.3)	$ (1.3)	$ (3.4)
Term Loan A and Term Loan B Facility
Extinguishment of Debt [Line Items]
Loss on extinguishment of debt	(1.0)	0.0
Production Loan Prepayment
Extinguishment of Debt [Line Items]
Loss on extinguishment of debt			(1.3)	0.0	0.0
Term Loan A
Extinguishment of Debt [Line Items]
Loss on extinguishment of debt			0.0	(1.3)	0.0
Revolving Credit Facility And Term Loan A
Extinguishment of Debt [Line Items]
Loss on extinguishment of debt			0.0	0.0	(1.7)
Revolving Credit Facility
Extinguishment of Debt [Line Items]
Loss on extinguishment of debt			0.0	0.0	(1.1)
Term Loan B
Extinguishment of Debt [Line Items]
Loss on extinguishment of debt			0.0	0.0	(0.6)
Starz Business of Lions Gate Entertainment Corp
Extinguishment of Debt [Line Items]
Loss on extinguishment of debt	(4.9)	21.2	$ 21.2	$ 58.7	$ (24.8)
Starz Business of Lions Gate Entertainment Corp | 5.5% Senior Notes exchange and repurchases
Extinguishment of Debt [Line Items]
Loss on extinguishment of debt	$ (4.9)	$ 21.2

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- Definition

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+ References

No definition available.

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- Definition

Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity.

+ 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

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 2
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481303/470-50-40-2

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 470
-SubTopic 50
-Section 40
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147481303/470-50-40-4

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