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NOTES PAYABLE AND COMMERCIAL BANK FINANCINGS NOTES PAYABLE AND COMMERCIAL BANK FINANCINGS - Bank Credit Agreement (Details) - USD ($)
3 Months Ended
Sep. 30, 2016
Jul. 19, 2016
Jun. 30, 2016
Dec. 31, 2015
Debt Instrument [Line Items]        
Outstanding debt     $ 4,178,800,000  
Bank Credit Agreement | Forecast        
Debt Instrument [Line Items]        
Financing costs $ 2,300,000      
Financing costs to be expensed $ 300,000      
Bank Credit Agreement | Revolving Credit Facility        
Debt Instrument [Line Items]        
Outstanding balance     0 $ 0
Current borrowing capacity     $ 483,300,000  
Subsequent Event | Bank Credit Agreement | Revolving Credit Facility        
Debt Instrument [Line Items]        
Revolving commitments   $ 485,200,000.0    
Financing costs   2,600,000    
Subsequent Event | Bank Credit Agreement | Term Loan | Term Loan A Extended to July 2021        
Debt Instrument [Line Items]        
Outstanding debt   139,500,000    
Subsequent Event | Bank Credit Agreement | Term Loan | Term Loan A Maturing April 2018        
Debt Instrument [Line Items]        
Outstanding debt   $ 153,500,000