Segments and Geographic Information - Revenue and Profit by Segment (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Revenue	$ 8,696	$ 8,040	$ 7,794
Cost of services	(3,923)	(3,535)	(3,383)
Segment gross profit	4,773	4,505	4,411
Subscriber revenue
Segment Reporting Information [Line Items]
Revenue	6,614	6,372	6,120
Advertising revenue
Segment Reporting Information [Line Items]
Revenue	1,730	1,340	1,336
Equipment revenue
Segment Reporting Information [Line Items]
Revenue	201	173	173
Other revenue
Segment Reporting Information [Line Items]
Revenue	151	155	165
Sirius XM
Segment Reporting Information [Line Items]
Revenue	6,624	6,342	6,187
Cost of services	(2,594)	(2,430)	(2,378)
Segment gross profit	4,030	3,912	3,809
Sirius XM | Subscriber revenue
Segment Reporting Information [Line Items]
Revenue	6,084	5,857	5,644
Sirius XM | Advertising revenue
Segment Reporting Information [Line Items]
Revenue	188	157	205
Sirius XM | Equipment revenue
Segment Reporting Information [Line Items]
Revenue	201	173	173
Sirius XM | Other revenue
Segment Reporting Information [Line Items]
Revenue	151	155	165
Pandora
Segment Reporting Information [Line Items]
Revenue	2,072	1,698	1,607
Cost of services	(1,329)	(1,105)	(1,005)
Segment gross profit	743	593	602
Pandora | Subscriber revenue
Segment Reporting Information [Line Items]
Revenue	530	515	476
Pandora | Advertising revenue
Segment Reporting Information [Line Items]
Revenue	1,542	1,183	1,131
Pandora | Equipment revenue
Segment Reporting Information [Line Items]
Revenue	0	0	0
Pandora | Other revenue
Segment Reporting Information [Line Items]
Revenue	$ 0	$ 0	$ 0