Film Related Obligations - Annual Repayment of Film Related Obligations (Details) - USD ($) $ in Millions	Mar. 31, 2025	Mar. 31, 2024
Debt Instrument [Line Items]
2026	$ 1,617.8
2027	38.6
2028	333.8
2029	0.0
2030	0.0
Thereafter	0.0
Total	1,990.2
Less unamortized issuance costs	(7.1)
Total film related obligations, net	1,983.1	$ 1,938.0
Production Loans
Debt Instrument [Line Items]
2026	1,395.4
2027	0.0
2028	0.0
2029	0.0
2030	0.0
Thereafter	0.0
Total	1,395.4
Production Tax Credit Facility
Debt Instrument [Line Items]
2026	0.0
2027	0.0
2028	280.0
2029	0.0
2030	0.0
Thereafter	0.0
Total	280.0
Backlog Facility and Other
Debt Instrument [Line Items]
2026	185.1
2027	0.0
2028	53.8
2029	0.0
2030	0.0
Thereafter	0.0
Total	238.9
IP Credit Facility
Debt Instrument [Line Items]
2026	37.3
2027	38.6
2028	0.0
2029	0.0
2030	0.0
Thereafter	0.0
Total	$ 75.9