Debt - Narrative - Senior Credit Facilities (Details) - Lions Gate Entertainment Corp. $ in Millions	12 Months Ended
	Mar. 31, 2025 USD ($) increase
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving credit facility, maximum borrowing capacity	$ 1,250.0
Credit facility, available amount	$ 1,250.0
Number of possible increases in margin | increase	2
Effective interest rate (as percent)	6.17%
Change in control, trigger percentage	50.00%
Revolving Credit Facility | SOFR
Debt Instrument [Line Items]
Basis spread on variable interest rate (as percent)	0.10%
Potential increases in interest rate upon certain increases to leverage ratios, total	0.50%
Potential increase in interest rate upon certain increases to leverage ratios, per increase	0.25%
Revolving Credit Facility | Applicable Margin
Debt Instrument [Line Items]
Basis spread on variable interest rate (as percent)	1.75%
Revolving Credit Facility | Base Rate
Debt Instrument [Line Items]
Basis spread on variable interest rate (as percent)	0.75%
Revolving Credit Facility | Minimum
Debt Instrument [Line Items]
Commitment fee (as percent)	0.25%
Revolving Credit Facility | Minimum | SOFR
Debt Instrument [Line Items]
Coupon rate (as percent)	0.00%
Revolving Credit Facility | Maximum
Debt Instrument [Line Items]
Commitment fee (as percent)	0.375%
Letter of Credit
Debt Instrument [Line Items]
Letters of credit outstanding, amount	$ 0.0
Term Loans | Term Loan A
Debt Instrument [Line Items]
Quarterly principal payment percent, year two	1.75%
Quarterly principal payment percent, year four	2.50%
Quarterly principal payment percent, year three	2.50%
Term Loans | SOFR | Term Loan A
Debt Instrument [Line Items]
Potential increases in interest rate upon certain increases to leverage ratios, total	0.50%
Potential increase in interest rate upon certain increases to leverage ratios, per increase	0.25%
Term Loans | SOFR | Term Loan B
Debt Instrument [Line Items]
Basis spread on variable interest rate (as percent)	0.10%
Term Loans | Applicable Margin | Term Loan B
Debt Instrument [Line Items]
Basis spread on variable interest rate (as percent)	2.25%
Term Loans | Base Rate | Term Loan B
Debt Instrument [Line Items]
Basis spread on variable interest rate (as percent)	1.25%
Term Loans | Minimum | SOFR | Term Loan B
Debt Instrument [Line Items]
Coupon rate (as percent)	0.00%