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Segment Information - Narrative (Details)
$ in Millions
12 Months Ended
Mar. 31, 2025
USD ($)
segment
customer
Mar. 31, 2024
USD ($)
customer
Mar. 31, 2023
USD ($)
customer
Segment Reporting Information [Line Items]      
Number of reportable segments | segment 1    
Total revenue $ 1,369.6 $ 1,392.4 $ 1,422.5
Revenue Benchmark | Customer Concentration Risk      
Segment Reporting Information [Line Items]      
Number of customers | customer 1 2 1
Accounts Receivable | Customer Concentration Risk      
Segment Reporting Information [Line Items]      
Number of customers | customer 3 4  
Customer One      
Segment Reporting Information [Line Items]      
Accounts receivable, after allowance for credit loss $ 19.4 $ 5.9  
Customer One | Starz Networks [Member]      
Segment Reporting Information [Line Items]      
Total revenue     $ 374.1
Customer One | Customer Concentration Risk      
Segment Reporting Information [Line Items]      
Total revenue 406.5    
Two Customers      
Segment Reporting Information [Line Items]      
Total revenue   384.2  
Two Customers | Starz Networks [Member]      
Segment Reporting Information [Line Items]      
Total revenue   95.6  
Customer Two      
Segment Reporting Information [Line Items]      
Accounts receivable, after allowance for credit loss 5.9 7.1  
Customer Three      
Segment Reporting Information [Line Items]      
Accounts receivable, after allowance for credit loss $ 4.7 11.3  
Customer Four      
Segment Reporting Information [Line Items]      
Accounts receivable, after allowance for credit loss   $ 7.3