v3.19.1
Document And Entity Information - shares
3 Months Ended
Mar. 31, 2019
Apr. 30, 2019
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 Mar. 31, 2019  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Entity Small Business false  
Entity Emerging Growth Company false  
Liberty Sirius XM Group Common Class A    
Entity Common Stock, Shares Outstanding   102,868,921
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   206,986,548
Liberty Braves Group Common Class A    
Entity Common Stock, Shares Outstanding   10,251,309
Liberty Braves Group Common Class B    
Entity Common Stock, Shares Outstanding   981,860
Liberty Braves Group Common Class C    
Entity Common Stock, Shares Outstanding   39,776,088
Liberty Formula One Group Common Class A    
Entity Common Stock, Shares Outstanding   25,684,311
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   202,990,600