Debt Instrument, Covenant, Debt Cover Ratio

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- Definition

Funding Of Debt Service Reserve

+ References

No definition available.

+ Details

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- Definition

Restricted Cash Required, Period For Contractual Future Payments

+ References

No definition available.

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- Definition

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

+ References

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- Definition

Carrying amount as of the balance sheet date of petroleum or crude oil.

+ References

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- References

No definition available.

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- Definition

Carrying amount, net of valuation reserves and adjustments, as of the balance sheet date of products used directly or indirectly in the manufacturing or production process, which may or may not become part of the final product. May also include items used in the storage, presentation or transportation of physical goods.

+ References

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- References

No definition available.

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Accounting Policies - Narrative (Details) $ in Millions	9 Months Ended
Accounting Policies - Narrative (Details) $ in Millions	Sep. 30, 2026 USD ($)	Dec. 31, 2025 USD ($)	Sep. 30, 2024	Apr. 30, 2024	Mar. 31, 2024	Oct. 31, 2021	Mar. 31, 2021
Inventories
Materials and supplies inventory	$ 129.8	$ 144.9
Hydrocarbons inventory	12.6	$ 27.7
Facility
Cash, Cash Equivalents and Restricted Cash
Debt cover ratio				2.50
Debt service reserve account	$ 23.6
Facility Interest or Senior Notes
Cash, Cash Equivalents and Restricted Cash
Period for contractual future interest payments	6 months
7.750% Senior Notes \| Senior Notes
Cash, Cash Equivalents and Restricted Cash
Interest rate (as a percent)						7.75%
7.500% Senior Notes \| Senior Notes
Cash, Cash Equivalents and Restricted Cash
Interest rate (as a percent)							7.50%
8.750% Senior Notes \| Senior Notes
Cash, Cash Equivalents and Restricted Cash
Interest rate (as a percent)			8.75%
3.125% Convertible Senior Notes \| Senior Notes
Cash, Cash Equivalents and Restricted Cash
Interest rate (as a percent)	3.125%	3.125%			3.125%