Annual report pursuant to Section 13 and 15(d)

Income Taxes - Tax Effects And Reconciliation Of Unrecognized Tax Benefits (Details)

v3.10.0.1
Income Taxes - Tax Effects And Reconciliation Of Unrecognized Tax Benefits (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Deferred Income Taxes and Tax Credits [Abstract]      
Tax loss and credit carryforwards $ 1,355 $ 1,017  
Accrued stock compensation 97 88  
Other accrued liabilities   175  
Deferred revenue 514 502  
Deferred Tax Asset Discount on debt   26  
Other future deductible amounts 22 22  
Deferred tax assets 1,988 1,830  
Valuation allowance (174) (112)  
Net deferred tax assets 1,814 1,718  
Investments 26 110  
Fixed assets 359 326  
Intangible assets 2,690 2,760  
Discount on debt 76    
Other future taxable amounts 314    
Deferred tax liabilities 3,465 3,196  
Net deferred tax liabilities 1,651 1,478  
Valuation Allowances and Reserves, Period Increase (Decrease) 62    
Foreign operating loss carryforwards with no expiration 243    
Foreign operating loss carryforwards that expire 4    
Tax loss and credit carryforwards with no expiration 153    
Tax losses and tax credit carryforwards that expire 3    
Tax loss and credit carryforward valuation allowance 174    
Income Tax Uncertainties [Abstract]      
Unrecognized Tax Benefits, Beginning Balance 365 304 $ 254
Reduction for tax positions of prior years (27) (1) (1)
Increase in tax positions for current year 15 16 51
Increase in tax positions from prior years 65 37  
Decrease due to Settlements With Taxing Authorities (31) (423)  
Increase in tax positions from acquisition   432  
Unrecognized Tax Benefits, Ending Balance 387 $ 365 $ 304
Unrecognized Tax Benefits that Would Impact Effective Tax Rate 257    
Maximum      
Income Tax Uncertainties [Abstract]      
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued 1    
SIRIUS XM      
Deferred Income Taxes and Tax Credits [Abstract]      
Tax loss and credit carryforwards $ 952