Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v2.4.0.8
Stock-Based Compensation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 9 Months Ended 0 Months Ended 0 Months Ended 9 Months Ended 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Jul. 23, 2014
Common Class C
Sep. 30, 2014
Common Class C
Jul. 23, 2014
Common Class C
Jul. 23, 2014
Common Class A
Sep. 30, 2014
Common Class A
Jul. 23, 2014
Common Class A
Dec. 31, 2013
Common Class A
Sep. 30, 2014
SIRIUS XM
Sep. 30, 2013
SIRIUS XM
Sep. 30, 2014
SIRIUS XM
Sep. 30, 2013
SIRIUS XM
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                              
Number of shares issued during the period for each share of Series A and Series B stock held by shareholders prior to the distribution         2     2              
Granted                 1,000            
Weighted average grant-date fair value                 $ 38.86            
Vesting period                 4 years            
Total unrecognized compensation cost related $ 32   $ 32                 $ 274   $ 274  
Cost not yet recognized, weighted average period     1 year 9 months 18 days                     2 years 6 months  
Outstanding options           6,894,000     3,450,000   3,656,000 282,000,000   282,000,000  
Exercisable options           4,668,000     2,337,000     134,000,000   134,000,000  
Outstanding WAEP           $ 30.72     $ 30.70   $ 30.58 $ 2.67   $ 2.67  
Exercisable WAEP           $ 30.14     $ 30.11     $ 2.21   $ 2.21  
Outstanding, aggregate intrinsic value           112     57     270   270  
Exercisable, aggregate intrinsic value           79     40     204   204  
Share-based Compensation $ 53 $ 52 $ 151 $ 141               $ 39 $ 38 $ 110 $ 97
Series C option exercise price as compared to the Series A exercise price (as a percent)             33.33%                
Option exercise price adjustment (as a percent)                   33.33%