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v3.26.1

Goodwill and Intangible Assets - Schedule of Carrying Amount of Goodwill (Details) - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2026 | Sep. 30, 2025 | Dec. 31, 2025
Goodwill [Roll Forward] |  |  |
Goodwill |  |  | $ 471,372,000
Accumulated impairment losses | $ 0 |  | (126,600,000)
Beginning balance | 344,772,000 |  |
Acquisitions | 0 |  |
Ending balance | 344,772,000 |  | 344,772,000
Sphere |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill |  |  | 46,864,000
Accumulated impairment losses | 0 | $ 0 | 0
Beginning balance | 46,864,000 |  |
Acquisitions | 0 |  |
Ending balance | 46,864,000 |  | 46,864,000
MSG Networks |  |  |
Goodwill [Roll Forward] |  |  |
Goodwill |  |  | 424,508,000
Accumulated impairment losses | 0 | $ (65,400,000) | (126,600,000)
Beginning balance | 297,908,000 |  |
Acquisitions | 0 |  |
Ending balance | $ 297,908,000 |  | $ 297,908,000

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