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Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of unamortized debt discount (premium) and debt issuance costs.

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Represents the aggregate of total long-term debt, including current maturities and short-term debt.

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No definition available.

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

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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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Including the current and noncurrent portions, aggregate carrying amount of all types of notes payable, as of the balance sheet date, with initial maturities beyond one year or beyond the normal operating cycle, if longer.

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Carrying amount of liabilities associated with financial assets accounted for as secured borrowings recognized in the transferor's statement of financial position at the end of each period presented.

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DEBT (Details 1) - USD ($) $ in Millions	Dec. 31, 2019	Jul. 16, 2019	Dec. 31, 2018	Jan. 19, 2018	Mar. 09, 2017	Oct. 05, 2015
Debt Instrument [Line Items]
Notes payable	$ 3,381.2		$ 3,298.1
Receivables Financing Agreement (See Note 7)	0.0		125.0
Finance lease obligations	5.3		4.2
Deferred debt issuance costs	(38.2)		(34.1)
Interest rate swaps	(2.2)		(33.7)
Total debt	3,340.8		3,230.3
Current installments of long-term debt	2.1		125.9
Total long-term debt	3,338.7		3,104.4
$1,375.0 million Term Loan Facility
Debt Instrument [Line Items]
Notes payable	$ 0.0		$ 543.0
Interest rate	0.00%		4.02%
Variable-Rate Recovery Zone Bonds
Debt Instrument [Line Items]
Notes payable	$ 103.0		$ 103.0
Interest rate	2.85%		3.67%
Variable-Rate Go Zone Bonds
Debt Instrument [Line Items]
Notes payable	$ 50.0		$ 50.0
Interest rate	2.85%		3.67%
Industrial Development and Environmental Improvement Obligations
Debt Instrument [Line Items]
Notes payable	$ 2.9		$ 2.9
Interest rate	1.70%		2.52%
2025 Notes
Debt Instrument [Line Items]
Notes payable	$ 500.0		$ 500.0
Interest rate	10.00%		10.00%			10.00%
2023 Notes
Debt Instrument [Line Items]
Notes payable	$ 720.0		$ 720.0
Interest rate	9.75%		9.75%			9.75%
2029 Notes
Debt Instrument [Line Items]
Notes payable	$ 750.0		$ 0.0
Interest rate	5.625%	5.625%	0.00%
2022 Notes
Debt Instrument [Line Items]
Notes payable	$ 200.0		$ 200.0
Interest rate	5.50%		5.50%
2027 Notes
Debt Instrument [Line Items]
Notes payable	$ 500.0		$ 500.0
Interest rate	5.125%		5.125%		5.125%
2030 Notes
Debt Instrument [Line Items]
Notes payable	$ 550.0		$ 550.0
Interest rate	5.00%		5.00%	5.00%