Quarterly report pursuant to Section 13 or 15(d)

Business & Basis of Presentation - Reclassification (Details)

v3.19.1
Business & Basis of Presentation - Reclassification (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue $ 1,744 $ 1,375
Subscription Revenue    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue 1,458 1,258
Advertising revenue    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue 209 42
Equipment    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue 41 35
Other revenue    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue $ 36 40
Previously Reported    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue   1,375
Previously Reported | Subscription Revenue    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue   1,117
Previously Reported | Advertising revenue    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue   42
Previously Reported | Equipment    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue   35
Previously Reported | Other revenue    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue   181
Restatement Adjustment    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue   0
Restatement Adjustment | Subscription Revenue    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue   141
Restatement Adjustment | Advertising revenue    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue   0
Restatement Adjustment | Equipment    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue   0
Restatement Adjustment | Other revenue    
Error Corrections and Prior Period Adjustments Restatement [Line Items]    
Revenue   $ (141)