Annual report pursuant to Section 13 and 15(d)

Business & Basis of Presentation - Reclassification (Details)

v3.20.4
Business & Basis of Presentation - Reclassification (Details) - USD ($)
$ in Millions
 3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Mar. 31, 2020
Dec. 31, 2019
Sep. 30, 2019
Jun. 30, 2019
Mar. 31, 2019
Dec. 31, 2020
Dec. 31, 2019
Dec. 31, 2018
Related Party Transaction [Line Items]                      
Revenue $ 2,189 $ 2,025 $ 1,874 $ 1,952 $ 2,062 $ 2,011 $ 1,977 $ 1,744 $ 8,040 $ 7,794 $ 5,771
As Reported                      
Related Party Transaction [Line Items]                      
Revenue                     5,771
Reclassification                      
Related Party Transaction [Line Items]                      
Revenue                     0
Subscriber revenue                      
Related Party Transaction [Line Items]                      
Revenue                 6,372 6,120 5,264
Subscriber revenue | As Reported                      
Related Party Transaction [Line Items]                      
Revenue                     4,594
Subscriber revenue | Reclassification                      
Related Party Transaction [Line Items]                      
Revenue                     670
Advertising revenue                      
Related Party Transaction [Line Items]                      
Revenue                 1,340 1,336 188
Advertising revenue | As Reported                      
Related Party Transaction [Line Items]                      
Revenue                     188
Advertising revenue | Reclassification                      
Related Party Transaction [Line Items]                      
Revenue                     0
Equipment revenue                      
Related Party Transaction [Line Items]                      
Revenue                 173 173 155
Equipment revenue | As Reported                      
Related Party Transaction [Line Items]                      
Revenue                     155
Equipment revenue | Reclassification                      
Related Party Transaction [Line Items]                      
Revenue                     0
Other revenue                      
Related Party Transaction [Line Items]                      
Revenue                 $ 155 $ 165 164
Other revenue | As Reported                      
Related Party Transaction [Line Items]                      
Revenue                     834
Other revenue | Reclassification                      
Related Party Transaction [Line Items]                      
Revenue                     $ (670)