Annual report pursuant to Section 13 and 15(d)

Income Taxes - Valuation Allowance (Details)

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Income Taxes - Valuation Allowance (Details) (USD $)
9 Months Ended 12 Months Ended
Dec. 31, 2012
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Apr. 02, 2012
Jan. 11, 2013
Liberty Media [Member]
Valuation Allowance [Line Items]            
Decrease in Valuation Allowance Due to Subsidiary Conversion to Partnership $ 16,100,000          
Increase in Deferred Tax Assets Due to Difference in Book and Tax Basis for Subsidiary 7,100,000          
Change in valuation allowance affecting tax expense   3,061,000 76,933,000 (223,992,000)    
Deferred Tax Assets, Valuation Allowance 155,861,000 1,480,000 155,861,000     157,400,000
Capital loss carryforward deferred tax asset         101,300,000  
Decrease in Deferred Tax Assets Due to Subsidiary Conversion to Partnership $ 16,100,000