v3.19.2
Document and Entity Information - USD ($)
12 Months Ended
Jun. 30, 2019
Aug. 06, 2019
Dec. 30, 2018
Document And Entity Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Jun. 30, 2019    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Entity Registrant Name FOX CORPORATION    
Entity Central Index Key 0001754301    
Current Fiscal Year End Date --06-30    
Entity Filer Category Non-accelerated Filer    
Entity Well-known Seasoned Issuer No    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Voluntary Filers No    
Entity Shell Company false    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity File Number 001-38776    
Entity Tax Identification Number 831825597    
Entity Address, Address Line One 1211 Avenue of the Americas    
Entity Address, City or Town New York    
Entity Address, State or Province New York    
Entity Address, Postal Zip Code 10036    
City Area Code 212    
Local Phone Number 852-7000    
Entity Public Float     $ 0
Class A Common Stock      
Document And Entity Information [Line Items]      
Trading Symbol FOXA    
Entity Common Stock, Shares Outstanding   354,434,371  
Class B Common Stock      
Document And Entity Information [Line Items]      
Trading Symbol FOX    
Entity Common Stock, Shares Outstanding   266,173,651