Revenue - Provision for Doubtful Accounts (Details) $ in Millions	12 Months Ended
	Mar. 31, 2025 USD ($)
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 6.4
Recoveries	(2.1)
Other	2.5
Uncollectible accounts written-off	(1.2)
Ending balance	5.6
Lions Gate Entertainment Corp.
Accounts Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	7.2
Recoveries	(1.9)
Other	2.5
Uncollectible accounts written-off	(1.7)
Ending balance	$ 6.1