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Pension Plans and Other Postretirement Benefit Plan - Narrative (Details) $ in Thousands | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2026 USD ($) plan | Mar. 31, 2025 USD ($) | Apr. 20, 2023 | Apr. 19, 2023 plan
Defined Contribution Plan Disclosure [Line Items] |  |  |  |
Defined benefit plan, number of contributory welfare plans | plan |  |  |  | 2
Defined benefit plan, number of sponsored plans | plan | 1 |  |  |
Defined benefit plan, plan assets, period increase (decrease) | $ 34 | $ 21 |  |
Savings Plan |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |
Defined contribution plan, cost | 1,614 | 1,596 |  |
Other Pension, Postretirement and Supplemental Plans |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |
Employer contributions | $ 0 | $ 0 |  |
MSG Entertainment | Spinoff | MSG Stockholders |  |  |  |
Defined Contribution Plan Disclosure [Line Items] |  |  |  |
Noncontrolling interest, ownership percentage by parent |  |  | 67.00% |

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