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Leases - Summary Of Expected Future Payments Relating To The Company's Lease Liabilities (Details) - USD ($)
$ in Millions
Mar. 31, 2024
Mar. 31, 2023
Lessee Operating Leases [Line Items]    
2025 $ 62.9  
2026 56.1  
2027 49.3  
2028 49.2  
2029 45.4  
thereafter 220.8  
Total lease payments 483.7  
Less imputed interest (109.6)  
Total 374.1 $ 134.1
Starz Business of Lions Gate Entertainment Corp    
Lessee Operating Leases [Line Items]    
2025 11.3  
2026 11.9  
2027 12.4  
2028 12.4  
2029 5.9  
thereafter 19.9  
Total lease payments 73.8  
Less imputed interest (9.4)  
Total $ 64.4 $ 72.5