v3.19.3.a.u2
Document and Entity Information - shares
6 Months Ended
Dec. 31, 2019
Feb. 04, 2020
Document And Entity Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Dec. 31, 2019  
Document Fiscal Year Focus 2020  
Document Fiscal Period Focus Q2  
Entity Registrant Name FOX CORPORATION  
Entity Central Index Key 0001754301  
Current Fiscal Year End Date --06-30  
Entity Filer Category Non-accelerated Filer  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Shell Company false  
Entity Small Business false  
Entity Emerging Growth Company false  
Entity File Number 001-38776  
Entity Tax Identification Number 83-1825597  
Entity Address, Address Line One 1211 Avenue of the Americas  
Entity Address, City or Town New York  
Entity Address, State or Province NY  
Entity Incorporation, State or Country Code DE  
Entity Address, Postal Zip Code 10036  
City Area Code 212  
Local Phone Number 852-7000  
Document Quarterly Report true  
Document Transition Report false  
Class A Common Stock    
Document And Entity Information [Line Items]    
Title of 12(b) Security Common Stock, par value $0.01 per share  
Security Exchange Name NASDAQ  
Trading Symbol FOXA  
Entity Common Stock, Shares Outstanding   344,808,708
Class B Common Stock    
Document And Entity Information [Line Items]    
Title of 12(b) Security Common Stock, par value $0.01 per share  
Security Exchange Name NASDAQ  
Trading Symbol FOX  
Entity Common Stock, Shares Outstanding   262,024,419