Debt (Schedule of Debt) (Details) - USD ($) $ in Millions	Sep. 30, 2024	Mar. 31, 2024
Debt Instrument [Line Items]
Total corporate debt	$ 2,495.9	$ 2,508.5
Unamortized debt issuance costs	(35.6)	(28.5)
Total debt, net	2,460.3	2,480.0
Less current portion	(362.6)	(860.3)
Non-current portion of debt	2,097.7	1,619.7
Revolving Credit Facility
Debt Instrument [Line Items]
Total corporate debt	421.5	575.0
Term Loans \| Term Loan A
Debt Instrument [Line Items]
Total corporate debt	314.4	399.3
Term Loans \| Term Loan B
Debt Instrument [Line Items]
Total corporate debt	250.0	819.2
Senior Notes \| 5.5% Senior Notes
Debt Instrument [Line Items]
Total corporate debt	$ 715.0	715.0
Coupon rate	5.50%
Line of Credit \| eOne IP Credit Facility
Debt Instrument [Line Items]
Total corporate debt	$ 340.0	0.0
Line of Credit \| LG IP Credit Facility
Debt Instrument [Line Items]
Total corporate debt	$ 455.0	$ 0.0

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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