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Amount after unamortized (discount) premium and debt issuance costs of long-term debt classified as noncurrent and excluding amounts to be repaid within one year or the normal operating cycle, if longer. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The cash outflow during the period from the repayment of aggregate short-term and long-term debt. Excludes payment of capital lease obligations.

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DEBT - Components of Long-term Debt (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Long-term debt		$ 3,322.5	$ 3,194.2
Less current portion		(217.5)	(288.0)
Long-term debt		3,105.0	2,906.2
Short-term borrowings		$ 2.5	$ 2.2
Weighted-average interest rate (as a percent)		11.70%	8.30%
2020 New BrandCo Second-Lien Term Loans due 2025
Debt Instrument [Line Items]
Long-term debt		$ 75.0	$ 0.0
2020 New ABL FILO Term Loans due 2023
Debt Instrument [Line Items]
Long-term debt		50.0	0.0
2020 Troubled-debt-restructuring: future interest
Debt Instrument [Line Items]
Long-term debt		57.8	0.0
5.75% Senior Notes due 2021
Debt Instrument [Line Items]
Long-term debt		$ 0.0	498.1
Stated interest rate (as a percent)		5.75%
2020 BrandCo Term Loan Facility due 2025
Debt Instrument [Line Items]
Long-term debt		$ 1,644.8	0.0
Less current portion		(13.7)
2016 Term Loan Facility due 2023 and 2025
Debt Instrument [Line Items]
Long-term debt		874.8	1,713.6
Less current portion		(9.2)
Repayment of debt	$ 18.0
2019 Term Loan Facility due 2023
Debt Instrument [Line Items]
Long-term debt		0.0	187.1
2018 Foreign Asset-Based Term Facility due 2021
Debt Instrument [Line Items]
Long-term debt		57.7	82.3
Amended 2016 Revolving Credit Facility due 2021
Debt Instrument [Line Items]
Long-term debt		136.7	269.9
Less current portion		(136.7)	(269.9)
6.25% Senior Notes due 2024
Debt Instrument [Line Items]
Long-term debt		$ 425.4	442.8
Stated interest rate (as a percent)		6.25%
Spanish Government Loan due 2025
Debt Instrument [Line Items]
Long-term debt		$ 0.3	$ 0.4