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Fair Values of Financial Instruments - Implied Market Rates of Interest (Details)	Dec. 31, 2024	Dec. 31, 2023
3.95% Senior Notes Due 2028
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt interest rate	3.95%
5.15% Senior Notes Due 2029
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt interest rate	5.15%
7.15% Senior Notes Due 2033
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Debt interest rate	7.15%
Valuation, Market Approach | Fair Value Level 2 | Measurement Input, Implied Market Rate | 3.95% Senior Notes Due 2028
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long-term debt, measurement input	0.0549	0.0579
Valuation, Market Approach | Fair Value Level 2 | Measurement Input, Implied Market Rate | 5.15% Senior Notes Due 2029
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long-term debt, measurement input	0.0573	0.0610
Valuation, Market Approach | Fair Value Level 2 | Measurement Input, Implied Market Rate | 7.15% Senior Notes Due 2033
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long-term debt, measurement input	0.0642	0.0628
Valuation, Market Approach | Fair Value Level 2 | Measurement Input, Implied Market Rate | Equipment Loans Due 2025
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Long-term debt, measurement input	0.0528	0.0536

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

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