Quarterly report pursuant to Section 13 or 15(d)

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

v3.10.0.1
Information About Liberty's Operating Segments - Other Information (Details) - USD ($)
$ in Millions
9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Operating Activities And Reporting Information By Segment [Line Items]      
Assets $ 41,624   $ 41,996
Investments in affiliates, accounted for using the equity method 1,730   1,750
Capital expenditures 265 $ 407  
Elimination      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets (248)    
Liberty Sirius XM Group      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 28,476    
Investments in affiliates, accounted for using the equity method 661   672
Capital expenditures 239 207  
Liberty Sirius XM Group | SIRIUS XM      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 27,900    
Investments in affiliates, accounted for using the equity method 661    
Capital expenditures 239    
Liberty Sirius XM Group | Corporate And Other      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 576    
Braves Group      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 1,913    
Investments in affiliates, accounted for using the equity method 97   145
Capital expenditures 15 190  
Braves Group | Corporate And Other      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 1,913    
Investments in affiliates, accounted for using the equity method 97    
Capital expenditures 15    
Formula One Group      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 11,483    
Investments in affiliates, accounted for using the equity method 972   $ 933
Capital expenditures 11 $ 10  
Formula One Group | Formula 1      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 9,177    
Capital expenditures 9    
Formula One Group | Corporate And Other      
Operating Activities And Reporting Information By Segment [Line Items]      
Assets 2,306    
Investments in affiliates, accounted for using the equity method 972    
Capital expenditures $ 2