XML 122 R50.htm IDEA: XBRL DOCUMENT v2.4.0.8
Variable Interest Entities - Grey Ranch, L.P. - Assets and Liabilities Included in Unaudited Condensed Consolidated Balance Sheets (Detail) (USD $)
In Thousands, unless otherwise specified
Jun. 30, 2013
Dec. 31, 2012
Jun. 30, 2012
Dec. 31, 2011
Variable Interest Entity        
Cash and cash equivalents $ 1,094,341 $ 309,766 $ 421,073 $ 207,681
Accounts receivable, net 412,140 445,506    
Prepaid expenses 38,162 31,319    
Other current assets 38,866 19,043    
Total current assets 1,641,990 1,142,885    
Other property, plant and equipment, net 567,910 582,375    
Accounts payable and accrued expenses 746,944 766,544    
Grey Ranch Plant, L.P
        
Variable Interest Entity        
Cash and cash equivalents 226 1,080    
Accounts receivable, net 18 20    
Prepaid expenses 33 64    
Other current assets 109 109    
Total current assets 386 1,273    
Other property, plant and equipment, net 1,205 1,246    
Total assets 1,591 2,519    
Accounts payable and accrued expenses 137 274    
Total liabilities $ 137 $ 274