Debt - Narrative - Debt Transactions (Details) - USD ($) $ in Millions	1 Months Ended
	Nov. 30, 2024	Sep. 30, 2024	May 31, 2024	Apr. 30, 2022	Mar. 31, 2025	Mar. 31, 2024	Mar. 31, 2023
Term Loan A | Term Loans | Lions Gate Entertainment Corp.
Debt Instrument [Line Items]
Principal amount of debt prepaid			$ 84.9
Term Loan B | Term Loans | Lions Gate Entertainment Corp.
Debt Instrument [Line Items]
Principal amount of debt prepaid	$ 250.0	$ 355.1	$ 214.1
5.5% Senior Notes and Exchange Notes(2) | Senior Notes | Lions Gate Entertainment Corp.
Debt Instrument [Line Items]
Debt instrument, principal amount repurchased						$ 85.0
Coupon rate (as percent)					5.50%
Debt instrument, amount paid for repurchases						$ 61.4
5.500% Senior Notes One | Senior Notes | Lions Gate Entertainment Corp.
Debt Instrument [Line Items]
Debt instrument, principal amount repurchased							$ 200.0
Debt instrument, amount paid for repurchases							$ 135.0
2023 Term Loan A | Term Loans
Debt Instrument [Line Items]
Principal amount of debt prepaid				$ 193.6
2023 Term Loan A | Term Loans | Lions Gate Entertainment Corp.
Debt Instrument [Line Items]
Principal amount of debt prepaid				$ 193.6