Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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DEBT (Details) - USD ($) $ in Millions	Sep. 30, 2020	Dec. 31, 2019	May 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Mar. 17, 2017	Feb. 09, 2017	Oct. 17, 2016
Long-term Debt and Lease Obligation, Net, Alternative [Abstract]
Long-term Debt, Gross		$ 3,585.2
Unamortized discount and issuance costs	$ 32.2	117.9		$ (137.3)
Long-term Debt	$ 2,256.8	3,467.3		3,427.8
Debt instrument, Percentage								9.25%
Term Loan due 2023
Long-term Debt and Lease Obligation, Net, Alternative [Abstract]
Long-term Debt, Gross		2,070.0		2,070.0			$ 2,245.0
Long-term Debt					$ 2,070.0	$ 325.0
9.250% Senior notes due 2024
Long-term Debt and Lease Obligation, Net, Alternative [Abstract]
Long-term Debt, Gross		750.0		750.0
12.00%/13.00% PIK notes due 2022
Long-term Debt and Lease Obligation, Net, Alternative [Abstract]
Long-term Debt, Gross		500.0		500.0
Debt instrument, Percentage							13.00%
ABL Revolving Credit Facility
Long-term Debt and Lease Obligation, Net, Alternative [Abstract]
Long-term Debt, Gross		145.2		$ 245.1
10.00% notes due 2024
Long-term Debt and Lease Obligation, Net, Alternative [Abstract]
Long-term Debt, Gross		$ 120.0
Debt instrument, Percentage			10.00%