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           DEBT OBLIGATIONS - Maturities of Debt Obligations (Details 2) (USD $) 
        In Thousands, unless otherwise specified  | 
        
           Dec. 31, 2013 
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|---|---|
| Debt maturing in year | |
| 2014 | $ 569,940 | 
| 2015 | 16,537 | 
| 2016 | 41,083 | 
| 2017 | 225,795 | 
| 2018 | 142,789 | 
| Thereafter | 2,034,346 | 
| Total | 3,030,490 | 
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           Recourse Debt 
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        |
| Debt maturing in year | |
| 2014 | 556,347 | 
| 2015 | |
| 2016 | |
| 2017 | 152,498 | 
| 2018 | |
| Thereafter | |
| Total | 708,845 | 
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           Nonrecourse Debt 
         | 
        |
| Debt maturing in year | |
| 2014 | 13,593 | 
| 2015 | 16,537 | 
| 2016 | 41,083 | 
| 2017 | 73,297 | 
| 2018 | 142,789 | 
| Thereafter | 2,034,346 | 
| Total | $ 2,321,645 | 
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- Definition 
          Represents the aggregate of total long-term debt, including current maturities and short-term debt. No definition available. 
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- Details 
          
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- Definition 
          Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition 
          Amount of long-term debt, sinking fund requirements, and other securities redeemable at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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