Pension Plans and Other Postretirement Benefit Plans - Weighted-Average Asset Allocation (Details)	Jun. 30, 2025	Jun. 30, 2024
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	100.00%	100.00%
Fixed income securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	82.00%	79.00%
Defined benefit plan, plan assets, target allocation, percentage	85.00%
Equity securities
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	15.00%	15.00%
Defined benefit plan, plan assets, target allocation, percentage	15.00%
Cash equivalents
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, actual allocation, percentage	3.00%	6.00%
Union Plans
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, target allocation, percentage	100.00%

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Madison Square Garden Entertainment Corp. 10-K