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Benefit Plans (Details Textual) (USD $)
In Thousands, except Share data, unless otherwise specified |
1 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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May 31, 2009
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Sep. 30, 2014
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Sep. 30, 2013
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Sep. 30, 2014
plan
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Sep. 30, 2013
|
Sep. 30, 2014
Third Parties [Member]
|
Sep. 30, 2013
Third Parties [Member]
|
Sep. 30, 2014
Third Parties [Member]
|
Sep. 30, 2013
Third Parties [Member]
|
Sep. 30, 2014
Restricted Stock Units RSU and Stock Options [Member]
|
Dec. 31, 2013
Restricted Stock Units RSU and Stock Options [Member]
|
Sep. 30, 2014
Employee Stock Option [Member]
|
Sep. 30, 2013
Employee Stock Option [Member]
|
Sep. 30, 2014
Employee Stock Option [Member]
|
Sep. 30, 2013
Employee Stock Option [Member]
|
Sep. 30, 2014
Restricted Stock Units (RSUs) [Member]
|
Sep. 30, 2013
Restricted Stock Units (RSUs) [Member]
|
Sep. 30, 2014
Restricted Stock Units (RSUs) [Member]
|
Sep. 30, 2013
Restricted Stock Units (RSUs) [Member]
|
Sep. 30, 2014
Sirius XM Savings Plan [Member]
|
Sep. 30, 2013
Sirius XM Savings Plan [Member]
|
Sep. 30, 2014
Sirius XM Savings Plan [Member]
|
Sep. 30, 2013
Sirius XM Savings Plan [Member]
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| Benefits Plans (Textual) [Abstract] | |||||||||||||||||||||||
| Share-based compensation expense | $ 21,805 | $ 19,762 | $ 57,832 | $ 49,774 | $ 19,318 | $ 18,860 | $ 52,126 | $ 48,661 | $ 2,487 | $ 902 | $ 5,706 | $ 1,113 | |||||||||||
| Stock-based awards expiration term | 10 years | ||||||||||||||||||||||
| Restricted stock conversion to common stock | 1 | ||||||||||||||||||||||
| Common stock available for future grants | 20,896,000 | 20,896,000 | |||||||||||||||||||||
| Number of other share-based benefit plans | 4 | ||||||||||||||||||||||
| Granted, options (in shares) | 0 | 0 | 0 | 0 | 59,534,000 | ||||||||||||||||||
| Weighted average grant date fair value of options granted (in dollars per share) | $ 1.05 | $ 1.48 | |||||||||||||||||||||
| Total intrinsic value of stock options exercised | 62,650 | 104,785 | |||||||||||||||||||||
| Exercise of stock options and vesting of restricted stock units (in shares) | 11,212,077 | 710,728 | |||||||||||||||||||||
| Weighted average grant date fair value of restricted stock units granted (in dollars per share) | $ 3.39 | $ 3.58 | |||||||||||||||||||||
| Total intrinsic value of restricted stock units that vested | 3,924 | 605 | |||||||||||||||||||||
| Granted, shares | 5,883,000 | ||||||||||||||||||||||
| Total unrecognized compensation costs related to unvested share based payment awards for restricted stock units, net of estimated forfeitures | 182,649 | 164,292 | |||||||||||||||||||||
| Weighted average expected period for recognition of compensation expenses | 3 years | ||||||||||||||||||||||
| Minimum of employee contributions of pre-tax eligible earnings to Company 401(k) Savings Plan | 1.00% | 1.00% | |||||||||||||||||||||
| Maximum of employee contributions of pre-tax eligible earnings to Company 401(k) Savings Plan | 50.00% | 50.00% | |||||||||||||||||||||
| Percent of Company match of employee's voluntary contributions | 50.00% | ||||||||||||||||||||||
| Percent of employee's pre-tax salary | 6.00% | ||||||||||||||||||||||
| Maximum annual contributions per employee, percent | 3.00% | ||||||||||||||||||||||
| Vesting percentage of employer contributions for each year of employment | 33.33% | 33.33% | |||||||||||||||||||||
| Savings plan, fully vested period | 3 years | ||||||||||||||||||||||
| Contributions by employer | $ 1,190 | $ 944 | $ 4,323 | $ 3,331 | |||||||||||||||||||