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Cover Page - USD ($)
 12 Months Ended
Mar. 31, 2025
Jun. 16, 2025
Sep. 30, 2024
Document Information [Line Items]      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Mar. 31, 2025    
Current Fiscal Year End Date --03-31    
Document Transition Report false    
Entity File Number 1-14880    
Registrant Name Starz Entertainment Corp.    
Entity Incorporation, State or Country Code A1    
Entity Address, Address Line One 250 Howe Street, 20th Floor    
Entity Address, City or Town Vancouver    
Entity Address, State or Province BC    
Entity Address, Postal Zip Code V6C 3R8    
City Area Code (604)    
Local Phone Number 648-6559    
Title of each class Common Shares, no par value per share    
Trading Symbol(s) STRZ    
Name of each exchange on which registered NASDAQ    
Entity Well-known Seasoned Issuer No    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Non-accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
ICFR Auditor Attestation Flag false    
Document Financial Statement Error Correction false    
Entity Shell Company false    
Documents Incorporated by Reference
Information required in Part III of this Annual Report on Form 10-K is incorporated by reference to an amendment to this Form 10-K to be filed with the Securities and Exchange Commission within 120 days of the registrant’s fiscal year ended March 31, 2025.
    
Amendment Flag false    
Document Fiscal Year Focus 2025    
Document Fiscal Period Focus FY    
Central Index Key 0000929351    
Entity Public Float     $ 0
Entity Common Stock, Shares Outstanding   16,721,810  
Other Address      
Document Information [Line Items]      
Entity Address, Address Line One 1647 Stewart St.    
Entity Address, City or Town Santa Monica    
Entity Address, State or Province CA    
Entity Address, Postal Zip Code 90404