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Cover - USD ($)
$ in Millions
12 Months Ended
Jun. 30, 2023
Jul. 31, 2023
Dec. 31, 2022
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Current Fiscal Year End Date --06-30    
Document Period End Date Jun. 30, 2023    
Document Transition Report false    
Entity File Number 001-39245    
Entity Registrant Name SPHERE ENTERTAINMENT CO.    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 84-3755666    
Entity Address, Street Address Two Penn Plaza,    
Entity Address, City New York,    
Entity Address, State NY    
Entity Address, Postal Zip Code 10121    
City Area Code 725    
Local Phone Number 258-0001    
Title of 12(b) Security Class A Common Stock    
Trading Symbol SPHR    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag true    
Document Financial Statement Error Correction [Flag] false    
Entity Shell Company false    
Entity Public Float     $ 1,180
Documents Incorporated by Reference Documents incorporated by reference — Certain information required for Part III of this report is incorporated herein by reference to the proxy statement for the 2023 annual meeting of the Company’s stockholders, expected to be filed within 120 days after the end of our fiscal year.    
Entity Central Index Key 0001795250    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus FY    
Amendment Flag false    
Class A Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   27,811,874  
Class B Common Stock      
Document Information [Line Items]      
Entity Common Stock, Shares Outstanding   6,866,754