Quarterly report pursuant to Section 13 or 15(d)

Document and Entity Information

Document and Entity Information - shares
3 Months Ended
Mar. 31, 2017
Apr. 25, 2017
Document And Entity Information [Abstract]    
Entity Registrant Name SIRIUS XM HOLDINGS INC.  
Entity Central Index Key 0000908937  
Trading Symbol SIRI  
Document Type 10-Q  
Document Period End Date Mar. 31, 2017  
Document Fiscal Year Focus 2017  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Entity Common Stock, Shares Outstanding   4,665,016,103