Debt - Schedule of Debt Maturities (Details) - USD ($) $ in Millions	Mar. 31, 2025	Mar. 31, 2024
Long-term Debt, Fiscal Year Maturity [Abstract]
Year Ending March 31, 2026	$ 215.6
2027	448.4
2028	134.0
Year Ending March 31, 2029	134.0
2030	765.8
Thereafter	0.0
Total corporate debt	1,697.8	$ 1,793.5
Unamortized debt issuance costs	(24.8)	(10.2)
Total debt, net	1,673.0	1,783.3
Lions Gate Entertainment Corp.
Long-term Debt, Fiscal Year Maturity [Abstract]
Year Ending March 31, 2026	134.0
2027	448.4
2028	134.0
Year Ending March 31, 2029	134.0
2030	1,480.8
Thereafter	0.0
Total corporate debt	2,331.2	2,508.5
Unamortized debt issuance costs	(40.0)	(28.5)
Total debt, net	2,291.2	2,480.0
Revolving Credit Facility \| Lions Gate Entertainment Corp.
Long-term Debt, Fiscal Year Maturity [Abstract]
Year Ending March 31, 2026	0.0
2027	0.0
2028	0.0
Year Ending March 31, 2029	0.0
2030	0.0
Thereafter	0.0
Total corporate debt	0.0	575.0
Term Loans \| Term Loan A \| Lions Gate Entertainment Corp.
Long-term Debt, Fiscal Year Maturity [Abstract]
Year Ending March 31, 2026	0.0
2027	314.4
2028	0.0
Year Ending March 31, 2029	0.0
2030	0.0
Thereafter	0.0
Total corporate debt	314.4	399.3
Senior Notes \| 5.5% Senior Notes and Exchange Notes(2) \| Lions Gate Entertainment Corp.
Long-term Debt, Fiscal Year Maturity [Abstract]
Year Ending March 31, 2026	0.0
2027	0.0
2028	0.0
Year Ending March 31, 2029	0.0
2030	715.0
Thereafter	0.0
Total corporate debt	$ 715.0	715.0
Coupon rate (as percent)	5.50%
Line of Credit \| eOne IP Credit Facility
Long-term Debt, Fiscal Year Maturity [Abstract]
Year Ending March 31, 2026	$ 34.0
2027	34.0
2028	34.0
Year Ending March 31, 2029	34.0
2030	187.0
Thereafter	0.0
Total corporate debt	323.0
Line of Credit \| eOne IP Credit Facility \| Lions Gate Entertainment Corp.
Long-term Debt, Fiscal Year Maturity [Abstract]
Year Ending March 31, 2026	34.0
2027	34.0
2028	34.0
Year Ending March 31, 2029	34.0
2030	187.0
Thereafter	0.0
Total corporate debt	323.0	0.0
Line of Credit \| LG IP Credit Facility
Long-term Debt, Fiscal Year Maturity [Abstract]
Year Ending March 31, 2026	100.0
2027	100.0
2028	100.0
Year Ending March 31, 2029	100.0
2030	578.8
Thereafter	0.0
Total corporate debt	978.8
Line of Credit \| LG IP Credit Facility \| Lions Gate Entertainment Corp.
Long-term Debt, Fiscal Year Maturity [Abstract]
Year Ending March 31, 2026	100.0
2027	100.0
2028	100.0
Year Ending March 31, 2029	100.0
2030	578.8
Thereafter	0.0
Total corporate debt	$ 978.8	$ 0.0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount, after deduction of unamortized premium (discount) and debt issuance cost, of long-term debt. Excludes lease obligation.

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Amount of long-term debt payable, sinking fund requirement, and other securities issued that are redeemable by holder at fixed or determinable price and date, maturing after fifth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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