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, unless otherwise specified	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014
Stock-based compensation expenses:
Total stock-based compensation expense	$ 23,195	$ 17,392
Cost of revenue - Other
Stock-based compensation expenses:
Total stock-based compensation expense	1,207	881
Product development
Stock-based compensation expenses:
Total stock-based compensation expense	4,605	3,461
Sales and marketing
Stock-based compensation expenses:
Total stock-based compensation expense	11,344	8,311
General and administrative
Stock-based compensation expenses:
Total stock-based compensation expense	$ 6,039	$ 4,739