Cover - shares	3 Months Ended
	Mar. 31, 2022	Apr. 26, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-34295
Entity Registrant Name	SIRIUS XM HOLDINGS INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	38-3916511
Entity Address, Address Line One	1221 Avenue of the Americas
Entity Address, Address Line Two	35th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10020
City Area Code	212
Local Phone Number	584-5100
Title of 12(b) Security	Common stock, $0.001 par value
Trading Symbol	SIRI
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		3,936,116,505
Entity Central Index Key	0000908937
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false