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

Intangible Assets (Details 1)	6 Months Ended
Intangible Assets (Details 1)	Jun. 30, 2011
SIRIUS FM-1 satellite [Member]
Years in which licenses expires
Year in which each of our FCC licenses expire	2017
SIRIUS FM-2 satellite [Member]
Years in which licenses expires
Year in which each of our FCC licenses expire	2017
SIRIUS FM-3 satellite [Member]
Years in which licenses expires
Year in which each of our FCC licenses expire	2017
SIRIUS FM 4 satellite [Member]
Years in which licenses expires
Year in which each of our FCC licenses expire	2017
SIRIUS FM-5 satellite [Member]
Years in which licenses expires
Year in which each of our FCC licenses expire	2017
SIRIUS FM-6 satellite [Member]
Years in which licenses expires
Year in which each of our FCC license expire	0
Intangible Assets (Textuals) [Abstract]
Expected Fcc License Expiration Description	P8Y from launch
XM-1 satellite [Member]
Years in which licenses expires
Year in which each of our FCC licenses expire	2014
XM-2 satellite [Member]
Years in which licenses expires
Year in which each of our FCC licenses expire	2014
XM-3 satellite [Member]
Years in which licenses expires
Year in which each of our FCC licenses expire	2013
XM-4 satellite [Member]
Years in which licenses expires
Year in which each of our FCC licenses expire	2014
XM-5 satellite [Member]
Years in which licenses expires
Year in which each of our FCC licenses expire	2018