Quarterly report pursuant to Section 13 or 15(d)

Related Party Transactions - Schedule of Related Party Revenue and Other Income, Additional Information (Details)

v3.8.0.1
Related Party Transactions - Schedule of Related Party Revenue and Other Income, Additional Information (Details) - USD ($)
3 Months Ended 5 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
May 24, 2017
Sep. 30, 2017
Sep. 30, 2016
Related Party Transaction [Line Items]          
Dividend received from unconsolidated entity investment       $ 3,606,000 $ 7,160,000
Sirius XM Canada | Equity Method Investee          
Related Party Transaction [Line Items]          
Earning recognition lag period     1 month    
Equity method investment, dividends, including reduction of investment $ 0     3,796,000 7,548,000
Dividend received from unconsolidated entity investment $ 0 $ 0   $ 0 $ 3,575,000
Sirius XM Canada | Equity Method Investee | Sirius Platform          
Related Party Transaction [Line Items]          
Percentage-based fee     10.00%    
Sirius XM Canada | Equity Method Investee | X M Platform          
Related Party Transaction [Line Items]          
Percentage-based fee     15.00%