Annual report pursuant to Section 13 and 15(d)

Subsequent Events (Details)

v2.4.1.9
Subsequent Events (Details) (Subsequent Event [Member], Common Stock [Member], Open Market And Privately Negotiated Repurchases [Member], USD $)
In Thousands, except Share data, unless otherwise specified
1 Months Ended
Feb. 03, 2015
Subsequent Event [Member] | Common Stock [Member] | Open Market And Privately Negotiated Repurchases [Member]
 
Subsequent Event [Line Items]  
Number of shares repurchased and retired 65,425,873us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
/ us-gaap_ShareRepurchaseProgramAxis
= siri_OpenMarketAndPrivatelyNegotiatedMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember
Stock repurchased and retired during period, value $ 231,026us-gaap_StockRepurchasedAndRetiredDuringPeriodValue
/ us-gaap_ShareRepurchaseProgramAxis
= siri_OpenMarketAndPrivatelyNegotiatedMember
/ us-gaap_StatementEquityComponentsAxis
= us-gaap_CommonStockMember
/ us-gaap_SubsequentEventTypeAxis
= us-gaap_SubsequentEventMember