REVENUES - Treatment and Disposal Revenue (Details) - T	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Small Quantity Generation | Minimum
Disaggregation of revenue
Revenue Contract Term	1 year
Total Waste Management | Minimum
Disaggregation of revenue
Revenue Contract Term	1 year
Remediation | Minimum
Disaggregation of revenue
Revenue Contract Term	1 year
Event Business | Treatment and disposal
Disaggregation of revenue
Threshold Tons of Non-recurring projects	1,000
Revenue (in percent)	24.00%	27.00%	22.00%
Base Business | Treatment and disposal
Disaggregation of revenue
Revenue (in percent)	76.00%	73.00%	78.00%