Annual report pursuant to Section 13 and 15(d)

Property and Equipment (Details 2)

v2.4.1.9
Property and Equipment (Details 2) (USD $)
In Thousands, unless otherwise specified
Dec. 31, 2014
Dec. 31, 2013
Construction in progress    
Construction in progress $ 155,716us-gaap_ConstructionInProgressGross $ 103,148us-gaap_ConstructionInProgressGross
Satellite system [Member]    
Construction in progress    
Construction in progress 12,912us-gaap_ConstructionInProgressGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= siri_SatelliteSystemMember 		11,879us-gaap_ConstructionInProgressGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= siri_SatelliteSystemMember
Terrestrial repeater network [Member]    
Construction in progress    
Construction in progress 48,406us-gaap_ConstructionInProgressGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= siri_TerrestrialRepeaterNetworkMember 		30,078us-gaap_ConstructionInProgressGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= siri_TerrestrialRepeaterNetworkMember
Capitalized software [Member]    
Construction in progress    
Construction in progress 77,755us-gaap_ConstructionInProgressGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember 		39,924us-gaap_ConstructionInProgressGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= us-gaap_SoftwareAndSoftwareDevelopmentCostsMember
Other [Member]    
Construction in progress    
Construction in progress $ 16,643us-gaap_ConstructionInProgressGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= siri_ConstructionInProgressOtherMember 		$ 21,267us-gaap_ConstructionInProgressGross
/ us-gaap_PropertyPlantAndEquipmentByTypeAxis
= siri_ConstructionInProgressOtherMember