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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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Face (par) amount of debt instrument at time of issuance.

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

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

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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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Maximum borrowing capacity under the credit facility without consideration of any current restrictions on the amount that could be borrowed or the amounts currently outstanding under the facility.

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The cash inflow from a debt initially having maturity due after one year or beyond the operating cycle, if longer.

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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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Debt - Delayed Draw Term Loan Narrative (Details) - USD ($)					6 Months Ended
	Jan. 12, 2024	Nov. 08, 2023	Aug. 10, 2023	Mar. 10, 2022	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024	Dec. 31, 2023	Mar. 16, 2020	Feb. 26, 2020	Nov. 28, 2018	Nov. 06, 2018
6.125% Senior Notes \| Senior Notes
Line of Credit Facility
Stated interest rate												6.125%
Debt instrument face amount												$ 550,000,000
7.500% Senior Notes \| Senior Notes
Line of Credit Facility
Stated interest rate	7.50%				7.50%
Borrowings of long-term debt	$ 594,700,000
Debt instrument face amount	$ 600,000,000
Principal balance					$ 600,000,000		$ 600,000,000
7.500% Senior Notes \| Unsecured Debt
Line of Credit Facility
Stated interest rate	7.50%
Revolving Credit Facility \| Line of Credit
Line of Credit Facility
Maximum revolving credit				$ 600,000,000					$ 465,000,000.0	$ 425,000,000.0	$ 250,000,000.0
Revolving Credit Facility \| Line of Credit \| Federal Funds Rate
Line of Credit Facility
Basis spread on variable rate					0.50%
Revolving Credit Facility \| Line of Credit \| SOFR
Line of Credit Facility
Basis spread on variable rate				1.50%	1.50%
Revolving Credit Facility \| Line of Credit \| SOFR \| Minimum
Line of Credit Facility
Basis spread on variable rate					1.00%
Revolving Credit Facility \| Line of Credit \| SOFR \| Maximum
Line of Credit Facility
Basis spread on variable rate					2.125%
Revolving Credit Facility \| Line of Credit \| Base Rate
Line of Credit Facility
Basis spread on variable rate					0.50%
Revolving Credit Facility \| Line of Credit \| Base Rate \| Minimum
Line of Credit Facility
Basis spread on variable rate					0.00%
Revolving Credit Facility \| Line of Credit \| Base Rate \| Maximum
Line of Credit Facility
Basis spread on variable rate					1.125%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit
Line of Credit Facility
Addition borrowing capacity			$ 420,000,000
Maximum revolving credit			$ 550,000,000
Borrowings of long-term debt		$ 420,000,000
Principal balance								$ 420,000,000
Unamortized debt issuance expense	$ 2,700,000
Interest expense, debt						$ 3,700,000
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component Two \| Federal Funds Rate
Line of Credit Facility
Basis spread on variable rate			0.50%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component Two \| SOFR
Line of Credit Facility
Basis spread on variable rate			1.00%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component Two \| Base Rate
Line of Credit Facility
Basis spread on variable rate			1.625%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component One \| SOFR
Line of Credit Facility
Basis spread on variable rate			2.625%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component Three, Period One \| SOFR \| Minimum
Line of Credit Facility
Basis spread on variable rate			2.125%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component Three, Period One \| SOFR \| Maximum
Line of Credit Facility
Basis spread on variable rate			3.375%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component Three, Period Two \| SOFR \| Minimum
Line of Credit Facility
Basis spread on variable rate			2.50%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component Three, Period Two \| SOFR \| Maximum
Line of Credit Facility
Basis spread on variable rate			3.875%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component Four, Period One \| Base Rate \| Minimum
Line of Credit Facility
Basis spread on variable rate			1.125%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component Four, Period One \| Base Rate \| Maximum
Line of Credit Facility
Basis spread on variable rate			2.375%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component Four, Period Two \| Base Rate \| Minimum
Line of Credit Facility
Basis spread on variable rate			1.50%
Revolving Credit Facility \| Delayed Draw Term Loan \| Line of Credit \| Component Four, Period Two \| Base Rate \| Maximum
Line of Credit Facility
Basis spread on variable rate			2.875%