Annual report pursuant to Section 13 and 15(d)

STOCKHOLDERS' EQUITY, Common Stock and Noncontrolling Interests (Details)

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STOCKHOLDERS' EQUITY, Common Stock and Noncontrolling Interests (Details) (USD $)
In Millions, except Share data, unless otherwise specified
1 Months Ended 3 Months Ended 1 Months Ended
Dec. 31, 2011
Dec. 31, 2011
Stock Options [Member]
Dec. 31, 2011
Restricted Stock [Member]
Dec. 31, 2011
RSUs [Member]
Dec. 31, 2011
BigChampagne [Member]
Jun. 30, 2011
Front Line [Member]
Dec. 31, 2010
Front Line [Member]
Feb. 28, 2011
Front Line [Member]
Common Stock [Member]
Mar. 31, 2011
Front Line [Member]
Common Stock [Member]
Jun. 30, 2011
Liberty Media [Member]
Common Stock [Member]
Feb. 28, 2011
Liberty Media [Member]
Common Stock [Member]
May 31, 2011
Vector [Member]
Common Stock [Member]
Business Acquisition, Equity Interests Issued or Issuable [Line Items]                        
Ownership interest acquired (in hundredths)         50.00%              
Shares issued in business combinations (in shares)               5,700,000       700,000
Common shares sold to related party pursuant to the subscription agreement (in shares)                   5,500,000 1,800,000  
Noncontrolling interest common stock repurchased (in shares)                 27,821      
Noncontrolling interest vested options repurchased (in shares)                 3,402      
Carrying value of common stock and vested options repurchased             $ 82.4          
Noncontrolling interest restricted common shares repurchased (in shares)                 15,376      
Carrying value of restricted common stock repurchased             24.0          
Fair value of redeemable put arrangements             22.5          
Carrying value of redeemable put arrangements             22.5          
Cost of acquired entity, purchase price           $ 14.7            
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]                        
Common stock reserved for future issuances under the stock incentive plan (in shares) 36,900,000 21,400,000 3,300,000 700,000