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Share-based Compensation - Narrative (Details) |  |  | 12 Months Ended
--- | --- | --- | ---
Apr. 20, 2023 d option shares | Apr. 17, 2020 plan | Jun. 30, 2024 USD ($) plan shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of share-based compensation plans | plan |  | 2 | 3
Share-based payment award, vesting period |  |  | 3 years
Number Of Equity Award Options | option | 2 |  |
Share-based compensation arrangement, threshold trading days | d | 10 |  |
Share-based payment arrangement, nonvested award, option, cost not yet recognized, amount | $ |  |  | $ 0
Minimum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based payment award, expiration period |  |  | 7 years 6 months
Maximum |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based payment award, expiration period |  |  | 10 years
Common Class A | Employee Stock Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based payment award, expiration period |  |  | 10 years
Awards granted (in shares) |  |  | 4,500,000
Share-based compensation arrangement by share-based payment award, expiration period, increase |  |  | 1 year
Performance Stock Units and Performance Restricted Stock Units |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based compensation cost not yet recognized | $ |  |  | $ 88,753,000
Share-based compensation cost not yet recognized, period for recognition |  |  | 2 years 1 month 6 days
Stock Appreciation Rights (SARs) |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based payment award, vesting period |  |  | 3 years
Employee Stock | Common Class A | Non-Employee Director Plan |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Share-based payment award, expiration period |  |  | 10 years
Awards granted (in shares) |  |  | 250,000
MSG Entertainment | Spinoff | Common Class A | Share-Based Payment Arrangement, Nonemployee |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares received for every one common stock shares held on record date (in shares) | 1 |  |
MSG Entertainment | Performance Stock Units and Performance Restricted Stock Units | Spinoff |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares received for every one common stock shares held on record date (in shares) | 1 |  |
Sphere | Spinoff | Common Class A |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares received for every one common stock shares held on record date (in shares) | 1 |  |
Sphere | Performance Stock Units and Performance Restricted Stock Units | Spinoff |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares received for every one common stock shares held on record date (in shares) | 1 |  |
Sphere | Restricted Stock | Spinoff | Share-Based Payment Arrangement, Nonemployee |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of shares received for every one common stock shares held on record date (in shares) | 1 |  |

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