| 
           Debt (Details) (USD $) 
        In Thousands, except Per Share data, unless otherwise specified  | 
        
           Sep. 30, 2012 
         | 
        
           Dec. 31, 2011 
         | 
        
           Sep. 30, 2012
 
          8.75% Senior Notes due 2015 [Member] 
         | 
        
           Dec. 31, 2011
 
          8.75% Senior Notes due 2015 [Member] 
         | 
        
           Mar. 31, 2010
 
          8.75% Senior Notes due 2015 [Member] 
         | 
        
           Sep. 30, 2012
 
          9.75% Senior Secured Notes due 2015 [Member] 
         | 
        
           Dec. 31, 2011
 
          9.75% Senior Secured Notes due 2015 [Member] 
         | 
        
           Aug. 31, 2009
 
          9.75% Senior Secured Notes due 2015 [Member] 
         | 
        
           Sep. 30, 2012
 
          13% Senior Notes due 2013 [Member] 
         | 
        
           Dec. 31, 2011
 
          13% Senior Notes due 2013 [Member] 
         | 
        
           Sep. 30, 2012
 
          7% Exchangeable Senior Subordinated Notes due 2014 [Member] 
         | 
        
           Dec. 31, 2011
 
          7% Exchangeable Senior Subordinated Notes due 2014 [Member] 
         | 
        
           Aug. 31, 2008
 
          7% Exchangeable Senior Subordinated Notes due 2014 [Member] 
         | 
        
           Sep. 30, 2012
 
          7.625% Senior Notes due 2018 [Member] 
         | 
        
           Dec. 31, 2011
 
          7.625% Senior Notes due 2018 [Member] 
         | 
        
           Sep. 30, 2012
 
          5.25% Senior Notes due 2022 [Member] 
         | 
        
           Dec. 31, 2011
 
          5.25% Senior Notes due 2022 [Member] 
         | 
      
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Debt | |||||||||||||||||
| Conversion price per share (in dollars per share) | $ 1.875 | $ 1.875 | |||||||||||||||
| Debt carrying value | $ 800,000 | $ 800,000 | $ 0 | $ 257,000 | $ 0 | $ 778,500 | $ 550,000 | $ 550,000 | $ 700,000 | $ 700,000 | $ 400,000 | $ 0 | |||||
| Less: discounts | (7,754) | (9,753) | (14,000) | 0 | (8,356) | (12,708) | 0 | (39,504) | (4,591) | (5,956) | (9,970) | (10,898) | (5,935) | 0 | |||
| Other debt: | |||||||||||||||||
| Capital leases | 13,003 | 2,941 | |||||||||||||||
| Total debt | 2,434,753 | 3,013,974 | |||||||||||||||
| Less: total current maturities non-related party | 4,326 | 1,623 | |||||||||||||||
| Total long-term | 2,430,427 | 3,012,351 | |||||||||||||||
| Related party long-term debt | 208,742 | 328,788 | |||||||||||||||
| Total long-term, excluding related party | $ 2,221,685 | $ 2,683,563 |