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Fair Value - Schedule of Fair Value of Assets and Liabilities Measured on Recurring Basis (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Gross Asset |  | $ 34,623 | $ 157,747 |
Liability |  | 100,276 | 276,846 |
Fair Value, Recurring [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Assets, Fair Value Disclosure |  | 69,716 | 82,825 |
Financial Liabilities Fair Value Disclosure |  | 35,119 | 34,802 |
Counterparty and Cash Collateral Netting, Assets | [1] | (22,802) | (136,605) |
Counterparty and Cash Collateral Netting, Liabilities | [1] | (65,157) | (242,044) |
Fair Value, Recurring [Member] | Fixed Income Funds [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Deferred compensation assets: | [2] | 1,117 | 1,267 |
Fair Value, Recurring [Member] | Equity Funds [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Equity investments | [2] | 50,254 | 54,284 |
Deferred compensation assets: | [2] | 6,524 | 6,132 |
Fair Value, Recurring [Member] | Energy Commodity Derivatives [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Counterparty and Cash Collateral Netting, Assets | [1],[3] | (22,802) | (136,605) |
Derivative Asset | [3] | 8,152 | 9,915 |
Counterparty and Cash Collateral Netting, Liabilities | [1],[3] | (65,157) | (242,044) |
Derivative Liability | [3] | 34,937 | 34,747 |
Fair Value, Recurring [Member] | Natural Gas Exchange Agreements [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Derivative Liability |  | 8,250 |  |
Fair Value, Recurring [Member] | Interest Rate Swap [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Derivative Asset |  | 3,667 | 11,184 |
Derivative Liability |  | 182 | 52 |
Fair Value, Recurring [Member] | Foreign Exchange Contract [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Liability |  |  | 3 |
Derivative Asset |  | 2 | $ 43 |
Derivative Asset, Statement of Financial Position [Extensible Enumeration] |  |  | Investments and Other Noncurrent Assets |
Derivative Liability, Statement of Financial Position [Extensible Enumeration] |  |  | Investments and Other Noncurrent Assets | Other Liabilities, Noncurrent
Fair Value, Recurring [Member] | Level 1 [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Assets, Fair Value Disclosure |  | 7,641 | $ 7,399 |
Fair Value, Recurring [Member] | Level 1 [Member] | Fixed Income Funds [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Deferred compensation assets: | [2] | 1,117 | 1,267 |
Fair Value, Recurring [Member] | Level 1 [Member] | Equity Funds [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Deferred compensation assets: | [2] | 6,524 | 6,132 |
Fair Value, Recurring [Member] | Level 2 [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Assets, Fair Value Disclosure |  | 34,623 | 157,459 |
Financial Liabilities Fair Value Disclosure |  | 92,026 | 258,824 |
Fair Value, Recurring [Member] | Level 2 [Member] | Energy Commodity Derivatives [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Gross Asset | [3] | 30,954 | 146,232 |
Liability | [3] | 91,844 | 258,769 |
Fair Value, Recurring [Member] | Level 2 [Member] | Interest Rate Swap [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Gross Asset |  | 3,667 | 11,184 |
Liability |  | 182 | 52 |
Fair Value, Recurring [Member] | Level 2 [Member] | Foreign Exchange Contract [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Gross Asset |  | 2 | 43 |
Liability |  |  | 3 |
Fair Value, Recurring [Member] | Level 3 [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Equity investments |  | 50,254 |  |
Assets, Fair Value Disclosure |  | 50,254 | 54,572 |
Financial Liabilities Fair Value Disclosure |  | 8,250 | 18,022 |
Fair Value, Recurring [Member] | Level 3 [Member] | Equity Funds [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Equity investments | [2] | 50,254 | 54,284 |
Fair Value, Recurring [Member] | Level 3 [Member] | Energy Commodity Derivatives [Member] |  |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Gross Asset | [3] |  | 288 |
Liability | [3] | $ 8,250 | $ 18,022 |
[1] | The Company is permitted to net derivative assets and derivative liabilities with the same counterparty when a legally enforceable master netting agreement exists. In addition, the Company nets derivative assets and derivative liabilities against payables and receivables for cash collateral held or placed with these same counterparties.
[2] | These assets are included in other property and investments-net and other non-current assets on the Consolidated Balance Sheets.
[3] | The Level 3 energy commodity derivative balances are associated with natural gas exchange agreements.

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