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Stock-Based Compensation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified |
3 Months Ended | 3 Months Ended | ||||
|---|---|---|---|---|---|---|
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Mar. 31, 2014
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Mar. 31, 2013
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Mar. 31, 2014
Common Class A
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Dec. 31, 2013
Common Class A
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Mar. 31, 2014
SIRIUS XM
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Mar. 31, 2013
SIRIUS XM
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] | 听 | 听 | 听 | 听 | 听 | 听 |
| Granted | 听 | 听 | 1,000 | 听 | 听 | 听 |
| Weighted average grant-date fair value | 听 | 听 | $ 38.86 | 听 | 听 | 听 |
| Vesting period | 听 | 听 | 4 years | 听 | 听 | 听 |
| Total unrecognized compensation cost related | $ 54 | 听 | 听 | 听 | $ 278 | 听 |
| Cost not yet recognized, weighted average period | 1 year 6 months | 听 | 听 | 听 | 2 years 6 months | 听 |
| Outstanding options | 听 | 听 | 3,502,000 | 3,656,000 | 259,000,000 | 听 |
| Exercisable options | 听 | 听 | 2,035,000 | 听 | 110,000,000 | 听 |
| Outstanding WAEP | 听 | 听 | $ 0 | $ 91.74 | $ 2.43 | 听 |
| Exercisable WAEP | 听 | 听 | $ 88.92 | 听 | $ 2.15 | 听 |
| Share-based Compensation | $ 49 | $ 41 | 听 | 听 | $ 36 | $ 26 |
| X | ||||||||||
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- Definition
Unrecognized cost of unvested share-based compensation awards. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Details
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| X | ||||||||||
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- Definition
The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Net number of share options (or share units) granted during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Number of options outstanding, including both vested and non-vested options. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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