Sirius XM Holdings Inc. Quarterly report pursuant to Section 13 or 15(d)

Stock-based Compensation Plans and Awards - Schedule of Stock-Based Compensation Expenses Related to All Employee and Non-employee Stock-based Awards (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Stock-based compensation expenses:
Total stock-based compensation expense	$ 28,838	$ 30,101	$ 82,802	$ 98,327
Cost of revenue—Other
Stock-based compensation expenses:
Total stock-based compensation expense	742	803	2,284	2,432
Cost of revenue—Ticketing service
Stock-based compensation expenses:
Total stock-based compensation expense	0	6	0	69
Product development
Stock-based compensation expenses:
Total stock-based compensation expense	8,884	8,428	23,329	25,765
Sales and marketing
Stock-based compensation expenses:
Total stock-based compensation expense	11,300	14,059	34,209	42,657
General and administrative
Stock-based compensation expenses:
Total stock-based compensation expense	$ 7,912	$ 6,805	$ 22,980	$ 27,404