Quarterly report pursuant to Section 13 or 15(d)

Document And Entity Information

v3.10.0.1
Document And Entity Information - shares
9 Months Ended
Sep. 30, 2018
Oct. 31, 2018
Entity Registrant Name Liberty Media Corp  
Entity Central Index Key 0001560385  
Current Fiscal Year End Date --12-31  
Entity Current Reporting Status Yes  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Sep. 30, 2018  
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Entity Small Business false  
Entity Emerging Growth Company false  
Liberty Sirius XM Group Common Class A    
Entity Common Stock, Shares Outstanding   102,803,892
Liberty Sirius XM Group Common Class B    
Entity Common Stock, Shares Outstanding   9,821,531
Liberty Sirus XM Group Common Class C    
Entity Common Stock, Shares Outstanding   214,981,984
Liberty Braves Group Common Class A    
Entity Common Stock, Shares Outstanding   10,244,042
Liberty Braves Group Common Class B    
Entity Common Stock, Shares Outstanding   981,860
Liberty Braves Group Common Class C    
Entity Common Stock, Shares Outstanding   39,738,602
Liberty Formula One Group Common Class A    
Entity Common Stock, Shares Outstanding   25,673,855
Liberty Formula One Group Common Class B    
Entity Common Stock, Shares Outstanding   2,453,485
Liberty Formula One Group Common Class C    
Entity Common Stock, Shares Outstanding   202,878,210