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DEBT - Additional Information (Detail) - USD ($)
3 Months Ended 9 Months Ended
Jul. 06, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Sep. 30, 2018
Dec. 31, 2017
Debt Instrument [Line Items]            
Minimum consolidated leverage ratio to trigger increase in interest rate   375.00%     375.00%  
Payment of litigation settlement amount $ 295,000,000          
Maximum consolidated leverage ratio possible on Settlement   400.00%     400.00%  
Consolidated leverage ratio, current   350.00%     350.00%  
Debt modification costs       $ 2,700,000    
Maximum            
Debt Instrument [Line Items]            
Allowed additions for business transformation, operational optimization and litigation matters for debt covenant compliance calculation         $ 200,000,000  
Private placement notes            
Debt Instrument [Line Items]            
Increase in interest rate     0.50%      
Private placement notes | BBB or better by S&P            
Debt Instrument [Line Items]            
Allowable increment in interest rate on consolidated leverage ratio   0.50%     0.50%  
Private placement notes | BBB- by S&P            
Debt Instrument [Line Items]            
Allowable increment in interest rate on consolidated leverage ratio   0.75%     0.75%  
Allowable increment in previous base interest rate on consolidated leverage ratio exceeds 3.75   0.25%     0.25%  
Private placement notes | BB+ or worse by S&P            
Debt Instrument [Line Items]            
Allowable increment in interest rate on consolidated leverage ratio   1.25%     1.25%  
Allowable increment in previous base interest rate on consolidated leverage ratio exceeds 3.75   0.50%     0.50%  
Senior credit facility and term loan            
Debt Instrument [Line Items]            
Increase in interest rate   0.25%        
Senior credit facility | Line of credit            
Debt Instrument [Line Items]            
Revolving credit facility, amount committed to outstanding letters of credit   $ 119,500,000     $ 119,500,000 $ 130,800,000
Revolving credit facility, unused portion   $ 466,800,000     $ 466,800,000 $ 597,500,000
Minimum consolidated leverage ratio to trigger increase in interest rate   400.00%     400.00%  
Allowable increment in interest rate on consolidated leverage ratio   0.25%     0.25%  
Term Loan Facility            
Debt Instrument [Line Items]            
Minimum consolidated leverage ratio to trigger increase in interest rate   400.00%     400.00%  
Allowable increment in interest rate on consolidated leverage ratio   0.25%     0.25%