Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Revenue recognition - Deferred revenue (Details)

v3.10.0.1
Summary of Significant Accounting Policies - Revenue recognition - Deferred revenue (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Jan. 01, 2018
Dec. 31, 2017
Deferred revenue      
Deferred revenue $ 2,079 $ 1,899 $ 1,941
Formula One Group      
Deferred revenue      
Deferred revenue 93   8
Liberty Sirius XM Group      
Deferred revenue      
Deferred revenue 1,932   1,882
Braves Group      
Deferred revenue      
Deferred revenue $ 54   51
SIRIUS XM | Accounting Standards Update 2014-09 | Maximum      
Optional exemption      
Percent of total deferred revenue balance related to contracts that extend beyond one year 10.00%    
SIRIUS XM | Liberty Sirius XM Group | Maximum      
Optional exemption      
Self-pay customers, audio subscriptions prepayment period 3 years    
SIRIUS XM | Liberty Sirius XM Group | Accounting Standards Update 2014-09      
Optional exemption      
Optional exemption utilized true    
SIRIUS XM | Liberty Sirius XM Group | Accounting Standards Update 2014-09 | Minimum      
Optional exemption      
Prepaid data trials, contract period 3 years    
SIRIUS XM | Liberty Sirius XM Group | Accounting Standards Update 2014-09 | Maximum      
Optional exemption      
Prepaid data trials, contract period 5 years    
Formula One and Braves Holdings      
Deferred revenue      
Deferred revenue $ 154   $ 59