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Amount of the required periodic payments applied to interest.

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Fair value amount of debt instrument that was repurchased.

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Amount, before accumulated amortization, of debt issuance costs related to line of credit arrangements. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

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Amount of gain (loss) from the difference between the repurchase price of a debt instrument initially issued by the entity and the net carrying amount of the debt at the time of its repurchase.

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The carrying value as of the balance sheet date of the current and noncurrent portions of long-term obligations drawn from a line of credit, which is a bank's commitment to make loans up to a specific amount. Examples of items that might be included in the application of this element may consist of letters of credit, standby letters of credit, and revolving credit arrangements, under which borrowings can be made up to a maximum amount as of any point in time conditional on satisfaction of specified terms before, as of and after the date of drawdowns on the line. Includes short-term obligations that would normally be classified as current liabilities but for which (a) postbalance sheet date issuance of a long term obligation to refinance the short term obligation on a long term basis, or (b) the enterprise has entered into a financing agreement that clearly permits the enterprise to refinance the short-term obligation on a long term basis and the following conditions are met (1) the agreement does not expire within 1 year and is not cancelable by the lender except for violation of an objectively determinable provision, (2) no violation exists at the BS date, and (3) the lender has entered into the financing agreement is expected to be financially capable of honoring the agreement.

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Weighted average interest rate of long-term debt outstanding calculated over time.

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Including the current and noncurrent portions, carrying value at the balance sheet date of a financial instrument used to receive debt funding on a regular basis with original maturities ranging from 5-10 years.

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Indebtedness divided by net capital.

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Amount of cash outflow for short-term and long-term debt. Excludes payment of lease obligation.

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The remaining balance of debt issuance expenses that were capitalized and are being amortized against income over the lives of the respective bond issues. This does not include the amounts capitalized as part of the cost of the utility plant or asset.

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LONG-TERM DEBT - Senior Debt and Credit Facility (Details) $ in Millions									3 Months Ended				9 Months Ended
	Nov. 03, 2023 day	Nov. 02, 2023 USD ($)	Nov. 01, 2023 USD ($)	Oct. 31, 2023 USD ($)	Oct. 27, 2023	Oct. 26, 2023	Oct. 02, 2023	May 01, 2022	Jun. 30, 2022 USD ($)	Dec. 31, 2021 USD ($)	Mar. 31, 2021 USD ($)	Dec. 31, 2019 USD ($)	Sep. 30, 2023 USD ($)	Nov. 08, 2023 USD ($)
Debt Instrument [Line Items]
Debt issuance price, percentage of principal (percent)													100.00%
Senior secured second-lien notes due 2027
Debt Instrument [Line Items]
Notes issued												$ 325.0
Debt issuance price, percentage of principal (percent)										100.75%
Senior Secured Second-Lien Notes Due 2027 - Additional Notes
Debt Instrument [Line Items]
Notes issued										$ 45.0		$ 100.0
Interest rate on notes												6.50%	6.50%
Debt issuance price, percentage of principal (percent)								106.50%				105.00%	104.875%
Senior Debt Obligations
Debt Instrument [Line Items]
Refinancing expenses											$ 0.5
Senior Debt Obligations \| Credit Facility
Debt Instrument [Line Items]
Long-term line of credit													$ 227.3
Senior Debt Obligations \| Credit Facility \| Subsequent Event
Debt Instrument [Line Items]
Debt instrument interest payment grace period				3 days
Accrued interest subject to payment grace period				$ 17.0										$ 0.8
Debt default amended period threshold \| day	11
Senior Debt Obligations \| Credit Facility \| Maximum \| Subsequent Event
Debt Instrument [Line Items]
Consolidated leverage ratio	4.0
Senior Debt Obligations \| Credit Facility \| Minimum \| Subsequent Event
Debt Instrument [Line Items]
Debt default amended period threshold \| day	3
Senior Debt Obligations \| 6.750% notes due March 31, 2029
Debt Instrument [Line Items]
Notes issued											$ 540.0
Debt instrument, stated percentage (percent)											6.75%
Debt issuance costs											$ 6.6
Senior Debt Obligations \| 6.750% notes due March 31, 2029 \| Subsequent Event
Debt Instrument [Line Items]
Debt instrument interest payment grace period					60 days	30 days	30 days
Debt instrument periodic payment interest		$ 18.0
Senior Debt Obligations \| Revolver, matures August 19, 2024
Debt Instrument [Line Items]
Repayments of debt											40.0
Debt issuance costs attributable to the revolver											$ 0.4
Senior Debt Obligations \| 7.25% senior unsecured notes, due November 1, 2024
Debt Instrument [Line Items]
Debt instrument, stated percentage (percent)											7.25%
Repayments of debt											$ 400.0
Senior Notes \| 6.500% notes due May 1, 2027
Debt Instrument [Line Items]
Repurchase amount									$ 10.0
Gain on repurchase									$ 0.6
Debt instrument, stated percentage (percent)													6.50%
Senior Notes \| 6.500% notes due May 1, 2027 \| Subsequent Event
Debt Instrument [Line Items]
Debt instrument interest payment grace period			30 days
Accrued interest subject to payment grace period			$ 15.0
Senior Notes \| 6.750% notes due March 31, 2029
Debt Instrument [Line Items]
Debt instrument, stated percentage (percent)													6.75%
Term Loan \| Term B-2 Loan, due November 17, 2024
Debt Instrument [Line Items]
Repayments of debt											$ 77.0