v2.4.0.6
DISPOSITIONS Narrative 2 (Details) (USD $)
Sep. 30, 2012
Dec. 31, 2011
Related Party Transaction [Line Items]    
Investment in joint ventures $ 116,139,000 $ 66,687,000
Asphalt JV [Member]
   
Related Party Transaction [Line Items]    
Maximum loss exposure related to VIE 448,700,000  
Investment in joint ventures 48,700,000  
Maximum amount available under credit facility to related party 250,000,000  
Maximum amount of guarantees $ 150,000,000