| Document and Entity Information | Oct. 07, 2024 |
| Cover [Abstract] | |
| Amendment Flag | false |
| Entity Central Index Key | 0001795250 |
| Document Type | 8-K |
| Document Period End Date | Oct. 07, 2024 |
| Entity Registrant Name | SPHERE ENTERTAINMENT CO. |
| Entity Incorporation State Country Code | DE |
| Entity File Number | 001-39245 |
| Entity Tax Identification Number | 84-3755666 |
| Entity Address, Address Line One | Two Pennsylvania Plaza |
| Entity Address, City or Town | New York |
| Entity Address, State or Province | NY |
| Entity Address, Postal Zip Code | 10121 |
| City Area Code | (725) |
| Local Phone Number | 258-0001 |
| Written Communications | false |
| Soliciting Material | false |
| Pre Commencement Tender Offer | false |
| Pre Commencement Issuer Tender Offer | false |
| Security 12b Title | Class A Common Stock |
| Trading Symbol | SPHR |
| Security Exchange Name | NYSE |
| Entity Emerging Growth Company | false |
