Quarterly report pursuant to Section 13 or 15(d)

Benefit Plans - Additional Information (Details)

v3.19.1
Benefit Plans - Additional Information (Details)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Feb. 01, 2019
USD ($)
Mar. 31, 2019
USD ($)
$ / shares
shares
Mar. 31, 2018
USD ($)
Dec. 31, 2018
USD ($)
Business Acquisition [Line Items]        
Share-based payment expense   $ (70) $ (34)  
Goodwill   3,831   $ 2,290
Share-based payment expense   $ 70 34  
Pandora        
Business Acquisition [Line Items]        
Exchange ratio (in shares per share) 1.44      
Goodwill $ 1,541      
Employees and Non Employee Stock Option        
Business Acquisition [Line Items]        
Grant date fair value of options (in dollars per share) | $ / shares   $ 1.26    
Options exercised in period, intrinsic value   $ 10 55  
Exercise of options and vesting of restricted stock units (in shares) | shares   1    
Share-based payment expense   $ 20 19  
Pre-Acquisition Replacement Equity Awards        
Business Acquisition [Line Items]        
Goodwill   8    
Restricted Stock Units (RSUs) and Performance Shares        
Business Acquisition [Line Items]        
Restricted stock units vested, intrinsic value   $ 74 1  
Granted (in shares) | shares   11    
Share-based payment expense   $ 50 $ 15  
Restricted Stock Units (RSUs)        
Business Acquisition [Line Items]        
Exercise of options and vesting of restricted stock units (in shares) | shares   7    
Performance-based Share Awards        
Business Acquisition [Line Items]        
Granted (in shares) | shares   5    
Pre-Acquisition Replacement Equity Awards, Restricted Stock Units        
Business Acquisition [Line Items]        
Goodwill   $ 62    
Restricted Stock Units Rsu And Stock Options        
Business Acquisition [Line Items]        
Unrecognized compensation costs   $ 477   $ 254
Weighted-average service period (in years)   2 years    
Acquisition-related Costs        
Business Acquisition [Line Items]        
Share-based payment expense   $ (21)    
Maximum | Restricted Stock Units (RSUs) and Performance Shares        
Business Acquisition [Line Items]        
Restricted stock units granted (in shares) | shares   1