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LONG-TERM DEBT - Additional Information (Detail) - USD ($)
1 Months Ended 3 Months Ended
Apr. 06, 2020
Feb. 25, 2020
Jun. 14, 2019
Apr. 30, 2020
Mar. 31, 2020
Mar. 31, 2019
Dec. 31, 2019
Debt Instrument [Line Items]              
Increase in pricing tier percent based on leverage ratio of greater than 4.50 to 1.00   0.125%          
Issuance cost         $ 14,500,000   $ 14,200,000
Divestiture of principal repayments         6,700,000 $ 6,800,000  
Domestic Environmental Solutions Less Retained Business | Subsequent Event              
Debt Instrument [Line Items]              
Divestiture of principal repayments       $ 430,000,000.0      
Decrease of maximum consolidated leverage ratio 0.25%            
Quarter Ending on or Before December 31, 2021 | Maximum              
Debt Instrument [Line Items]              
Maximum consolidated leverage ratio   5.00%          
Quarter Ending on or Before December 31, 2021 | Maximum | Domestic Environmental Solutions Less Retained Business | Subsequent Event              
Debt Instrument [Line Items]              
Maximum consolidated leverage ratio 4.75%            
Quarter Ending on or Before December 31, 2021 | Maximum | Domestic Environmental Solutions Group              
Debt Instrument [Line Items]              
Maximum consolidated leverage ratio   4.75%          
Quarter Ending on or After March 31, 2022 | Maximum              
Debt Instrument [Line Items]              
Maximum consolidated leverage ratio   4.50%          
Quarter Ending on or After March 31, 2022 | Maximum | Domestic Environmental Solutions Less Retained Business | Subsequent Event              
Debt Instrument [Line Items]              
Maximum consolidated leverage ratio 4.25%            
Quarter Ending on or After March 31, 2022 | Maximum | Domestic Environmental Solutions Group              
Debt Instrument [Line Items]              
Maximum consolidated leverage ratio   4.25%          
Period Through December 31, 2020 | Term Loan Facility              
Debt Instrument [Line Items]              
Allowed additional cash back to EBITDA   $ 200,000,000          
Period until December 31, 2021 | Term Loan Facility              
Debt Instrument [Line Items]              
Allowed additional cash back to EBITDA   100,000,000          
Period Thereafter | Term Loan Facility              
Debt Instrument [Line Items]              
Allowed additional cash back to EBITDA   $ 0          
Fiscal Quarter After March 31, 2022 and Thereafter | Maximum              
Debt Instrument [Line Items]              
Maximum consolidated leverage ratio   4.50%          
Fifth Amendment              
Debt Instrument [Line Items]              
Issuance cost         1,700,000    
Interest expense         $ 300,000    
Debt weighted average maturity 1.4 years and 1.6 years | Maximum | Term Loan Facility              
Debt Instrument [Line Items]              
Maximum consolidated leverage ratio     5.00%   4.50%    
Level 2              
Debt Instrument [Line Items]              
Estimated fair value of debt         $ 2,630,000,000   $ 2,730,000,000