LITIGATION (Details) $ in Millions						1 Months Ended	3 Months Ended	9 Months Ended	12 Months Ended
	Apr. 10, 2020 USD ($)	Sep. 23, 2019 USD ($)	Jul. 17, 2019 USD ($) defendant	May 31, 2019 USD ($) defendant plaintiff	Jan. 27, 2014 USD ($) defendant	Oct. 31, 2018 case	Sep. 30, 2019 USD ($)	Sep. 30, 2020 USD ($) plaintiff case defendant	Dec. 31, 2017 plaintiff	Apr. 17, 2020 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2018 USD ($)
Loss Contingencies [Line Items]
California litigation accrual							$ 12.0	$ 12.0			$ 12.0
Santa Clara County, California Proceeding
Loss Contingencies [Line Items]
Number of additional defendants | defendant			2		2
Amount payable jointly and severally for litigation					$ 1,150.0
Abatement amount ordered by court								401.1		$ 409.1
Amount awarded to plaintiffs			$ 305.0
Amount awarded per defendant			101.7
Initial payment amount		$ 25.0	$ 25.0
Dismissal order and judgment period			60 days
Subsequent annual payments amount			$ 12.0
Term of subsequent annual payments			4 years
Final payment amount			$ 16.7
Maximum amount agreed to backstop and pay on behalf of other defendant			$ 15.0
Reduction of accrual							59.6
California litigation accrual							76.7	64.7				$ 136.3
Accrual included in current liabilities							12.0	12.0
Accrual included in long-term liabilities							$ 64.7	$ 52.7
Pennsylvania Proceedings
Loss Contingencies [Line Items]
Number of proceedings initiated | case						2
Ravon Owens v. American Cyanamid, et al., Cesar Sifuentes v. American Cyanamid, et al., and Glenn Burton, Jr. v. American Cyanamid, et al.
Loss Contingencies [Line Items]
Number of additional defendants | defendant				2
Amount awarded to plaintiffs				$ 6.0
Number of cases consolidated | case								3
Number of plaintiffs | plaintiff				3
Amount awarded per plaintiff				$ 2.0
Damages sought	$ 0.8
Maniya Allen, et al. v. American Cyanamid, et al.
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff								146
Number of plaintiffs selected for discovery | plaintiff								6
Number of cases selected for discovery | case								4
Dijonae Trammell, et al. v. American Cyanamid, et al.
Loss Contingencies [Line Items]
Number of plaintiffs | plaintiff								3
Number of plaintiffs consolidated with another case | plaintiff								1
Mary Lewis v. Lead Industries Association, et al.
Loss Contingencies [Line Items]
Number of defendants | defendant								3
Number of plaintiffs whose claims were paid by Medicaid or private insurance | plaintiff									3
Number of plaintiffs whose claims were paid by Medicaid | plaintiff									2