Quarterly report pursuant to Section 13 or 15(d)

Information About Liberty's Operating Segments - Other Information (Details)

v3.8.0.1
Information About Liberty's Operating Segments - Other Information (Details) - USD ($)
$ in Millions
 3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Operating Activities And Reporting Information By Segment [Line Items]      
Assets $ 42,540   $ 41,996
Investments in affiliates, accounted for using the equity method 1,658   1,750
Capital expenditures 89 $ 156  
Elimination      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets (207)    
Liberty Sirius XM Group      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 28,958    
Investments in affiliates, accounted for using the equity method 651   672
Capital expenditures 82 54  
Liberty Sirius XM Group | SIRIUS XM      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 27,860    
Investments in affiliates, accounted for using the equity method 651    
Capital expenditures 82    
Liberty Sirius XM Group | Corporate And Other      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 1,098    
Braves Group      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 1,947    
Investments in affiliates, accounted for using the equity method 97   145
Capital expenditures 6 $ 102  
Braves Group | Corporate And Other      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 1,947    
Investments in affiliates, accounted for using the equity method 97    
Capital expenditures 6    
Formula One Group      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 11,842    
Investments in affiliates, accounted for using the equity method 910   $ 933
Capital expenditures 1    
Formula One Group | Formula 1      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 9,433    
Capital expenditures 1    
Formula One Group | Corporate And Other      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 2,409    
Investments in affiliates, accounted for using the equity method $ 910