COMMITMENTS AND CONTINGENCIES (Details) $ in Millions	3 Months Ended	9 Months Ended	12 Months Ended
	Sep. 30, 2020 USD ($) proceeding	Sep. 30, 2020 USD ($) site claim proceeding	Dec. 31, 2012 CAD ($)	Dec. 31, 1999 municipality	Dec. 31, 1968 permit	Dec. 31, 2019 USD ($) proceeding
Loss Contingencies [Line Items]
Recorded reserves for actual or probable liabilities | $	$ 29,900,000	$ 29,900,000				$ 26,000,000.0
Number of proceedings as defendant | proceeding	69	69
Number of product liability claims settled or dismissed | claim		10
Annual aggregate self-insured corridor retention | $	$ 5,000,000.0	$ 5,000,000.0
Remedial Liabilities for Inactive Sites
Loss Contingencies [Line Items]
Increase of remedial liabilities | $		3,300,000
Legal and Administrative Proceedings
Loss Contingencies [Line Items]
Recorded reserves for actual or probable liabilities | $	24,100,000	$ 24,100,000				18,400,000
Ville Mercier
Loss Contingencies [Line Items]
Number of permits issued by government, for dumping organic liquid | permit					2
Number of neighboring municipalities filing separate legal proceedings against the Mercier Subsidiary and the Government of Quebec | municipality				3
General damages sought | $			$ 2.9
Punitive damages sought | $			$ 10.0
Superfund Proceedings
Loss Contingencies [Line Items]
Number of sites owned by third party excluded from cleanup or related liabilities | site		130
Number of sites owned by the entity subject to proceedings under federal or state superfund laws | site		5
Number of sites owned by third parties | site		125
Number of sites for which environmental remediation expense is settled | site		31
Third party sites requiring expenditure on remediation | site		15
Number of sites not currently requiring expenditures on remediation | site		79
Minimum potential liability | $	100,000	$ 100,000
Number of sites, potential liability exceeds substantial quota | site		9
Notices received from owners of third parties sites seeking indemnifications from the company | site		17
BR Facility | Remedial Liabilities for Inactive Sites
Loss Contingencies [Line Items]
Increase of remedial liabilities | $	3,300,000
ChemWaste
Loss Contingencies [Line Items]
Indemnification agreement with third party sites | site		11
Kleen Performance Products
Loss Contingencies [Line Items]
Notices received from owners of third parties sites seeking indemnifications from the company | site		6
Federal and State Enforcement Actions
Loss Contingencies [Line Items]
Recorded reserves for actual or probable liabilities | $	$ 5,800,000	$ 5,800,000				$ 7,600,000
Number of proceedings as defendant | proceeding	11	11				12
Minimum potential liability | $	$ 100,000	$ 100,000				$ 100,000