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Quarterly report pursuant to Section 13 or 15(d)

Stock-Based Compensation (Narrative) (Details)

v2.4.0.6
Stock-Based Compensation (Narrative) (Details) (USD $)
In Millions, except Share data, unless otherwise specified
3 Months Ended 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Mar. 31, 2013
Common Class A [Member]
Dec. 31, 2012
Common Class A [Member]
Mar. 31, 2013
SIRIUS XM [Member]
Outstanding options Ìý Ìý 3,980,000 5,219,000 265,000,000
Options granted Ìý Ìý 0 Ìý Ìý
Total unrecognized compensation cost related to unvested Liberty equity awards $ 99 Ìý Ìý Ìý $ 310
Weighted average period of recognition related to unvested Liberty equity awards (in years) 1 year 10 months 25 days Ìý Ìý Ìý 3 years
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number Ìý Ìý 1,528,000 Ìý 90,000,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price Ìý Ìý $ 90.69 $ 98.77 $ 1.95
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price Ìý Ìý $ 84.93 Ìý $ 2.57
Share-based Compensation $ 41 $ 6 Ìý Ìý $ 26