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Debt (Schedule of Obligations Under Debt Arrangements) (Details) - USD ($) | Dec. 31, 2023 | Dec. 31, 2022 | May 17, 2022 | Dec. 17, 2020 | Jan. 16, 2020 | Dec. 11, 2017 | May 15, 2014
--- | --- | --- | --- | --- | --- | --- | ---
Debt Instrument [Line Items] |  |  |  |  |  |  |
Principal | $ 3,823,215,000 | $ 3,506,284,000 |  |  |  |  |
Unamortized Premium, Discount and Debt Issuance Costs | 58,751,000 | 42,130,000 |  |  |  |  |
Net Value | 3,764,464,000 | 3,464,154,000 |  |  |  |  |
Senior Secured Credit Facility | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Principal | 298,300,000 | 205,400,000 |  |  |  |  |
Unamortized Premium, Discount and Debt Issuance Costs | 0 | 0 |  |  |  |  |
Net Value | $ 298,300,000 | 205,400,000 |  |  |  |  |
5.625% senior unsecured notes due 2024 | Senior Unsecured Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt interest rate | 5.625% |  |  |  |  |  | 5.625%
Principal | $ 0 | 341,135,000 |  |  |  |  |
Unamortized Premium, Discount and Debt Issuance Costs | 0 | 1,249,000 |  |  |  |  |
Net Value | $ 0 | 339,886,000 |  |  |  |  |
6.500% senior unsecured notes due 2025 | Senior Unsecured Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt interest rate | 6.50% |  |  |  |  |  |
Principal | $ 0 | 534,834,000 |  |  |  |  |
Unamortized Premium, Discount and Debt Issuance Costs | 0 | 3,265,000 |  |  |  |  |
Net Value | $ 0 | 531,569,000 |  |  |  |  |
6.250% senior unsecured notes due 2026 | Senior Unsecured Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt interest rate | 6.25% |  |  |  |  | 6.25% |
Principal | $ 339,310,000 | 339,310,000 |  |  |  |  |
Unamortized Premium, Discount and Debt Issuance Costs | 1,746,000 | 2,481,000 |  |  |  |  |
Net Value | $ 337,564,000 | 336,829,000 |  |  |  |  |
8.000% senior unsecured notes due 2027 | Senior Unsecured Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt interest rate | 8.00% |  |  | 8.00% |  |  |
Principal | $ 981,245,000 | 981,245,000 |  |  |  |  |
Unamortized Premium, Discount and Debt Issuance Costs | 3,549,000 | 4,956,000 |  |  |  |  |
Net Value | $ 977,696,000 | 976,289,000 |  |  |  |  |
7.750% senior unsecured notes due 2028 | Senior Unsecured Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt interest rate | 7.75% |  |  |  | 7.75% |  |
Principal | $ 679,360,000 | 679,360,000 |  |  |  |  |
Unamortized Premium, Discount and Debt Issuance Costs | 6,121,000 | 7,621,000 |  |  |  |  |
Net Value | $ 673,239,000 | 671,739,000 |  |  |  |  |
8.250% senior unsecured notes due 2029 | Senior Unsecured Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt interest rate | 8.25% |  |  |  |  |  |
Principal | $ 600,000,000 | 0 |  |  |  |  |
Unamortized Premium, Discount and Debt Issuance Costs | 17,202,000 | 0 |  |  |  |  |
Net Value | $ 582,798,000 | 0 |  |  |  |  |
8.875% senior unsecured notes due 2030 | Senior Unsecured Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt interest rate | 8.875% |  |  |  |  |  |
Principal | $ 500,000,000 | 0 |  |  |  |  |
Unamortized Premium, Discount and Debt Issuance Costs | 8,342,000 | 0 |  |  |  |  |
Net Value | 491,658,000 | 0 |  |  |  |  |
5.875% Alkali senior secured notes due 2042 |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Principal | $ 400,000,000 |  |  |  |  |  |
5.875% Alkali senior secured notes due 2042 | Senior Unsecured Notes |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Debt interest rate | 5.875% |  | 5.875% |  |  |  |
Principal | $ 425,000,000 | 425,000,000 |  |  |  |  |
Unamortized Premium, Discount and Debt Issuance Costs | 21,791,000 | 22,558,000 |  |  |  |  |
Net Value | 403,209,000 | 402,442,000 |  |  |  |  |
Revolving Loan | Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |  |  |
Unamortized debt issuance costs included in other long term assets | $ 5,700,000 | $ 2,600,000 |  |  |  |  |

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