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Debt (Schedule of Obligations Under Debt Arrangements) (Details)
$ in Thousands
Sep. 30, 2024
USD ($)
Jul. 19, 2024
USD ($)
May 09, 2024
Dec. 31, 2023
USD ($)
Jan. 25, 2023
May 17, 2022
Debt Instrument [Line Items]            
Principal $ 4,084,510     $ 3,823,215    
Unamortized Premium, Discount and Debt Issuance Costs 62,775     58,751    
Net Value 4,021,735     3,764,464    
5.875% Alkali senior secured notes due 2042(2)            
Debt Instrument [Line Items]            
Principal 400,000          
Credit Facility | Revolving Credit Facility | Revolving Loan            
Debt Instrument [Line Items]            
Principal 207,600     298,300    
Unamortized Premium, Discount and Debt Issuance Costs 0     0    
Net Value 207,600     298,300    
Unamortized debt issuance costs 8,000     5,700    
Senior Notes | 6.250% senior unsecured notes due 2026            
Debt Instrument [Line Items]            
Principal 0     339,310    
Unamortized Premium, Discount and Debt Issuance Costs 0     1,746    
Net Value $ 0     337,564    
Interest rate 6.25%          
Senior Notes | 8.000% senior unsecured notes due 2027            
Debt Instrument [Line Items]            
Principal $ 981,245     981,245    
Unamortized Premium, Discount and Debt Issuance Costs 2,568     3,549    
Net Value $ 978,677 $ 150,000   977,696    
Interest rate 8.00% 8.00%        
Senior Notes | 7.750% senior unsecured notes due 2028            
Debt Instrument [Line Items]            
Principal $ 679,360     679,360    
Unamortized Premium, Discount and Debt Issuance Costs 4,997     6,121    
Net Value $ 674,363 $ 150,000   673,239    
Interest rate 7.75% 7.75%        
Senior Notes | 8.250% Senior Unsecured Notes Due 2029            
Debt Instrument [Line Items]            
Principal $ 600,000     600,000    
Unamortized Premium, Discount and Debt Issuance Costs 14,804     17,202    
Net Value $ 585,196     582,798    
Interest rate 8.25%          
Senior Notes | 5.875% Alkali senior secured notes due 2042(2)            
Debt Instrument [Line Items]            
Principal $ 416,305     425,000    
Unamortized Premium, Discount and Debt Issuance Costs 21,195     21,791    
Net Value $ 395,110     403,209    
Interest rate 5.875%          
Interest rate, limited term percentage           10
2030 Notes | Senior Notes            
Debt Instrument [Line Items]            
Principal $ 500,000     500,000    
Unamortized Premium, Discount and Debt Issuance Costs 7,347     8,342    
Net Value $ 492,653     491,658    
Interest rate 8.875%       8.875%  
2032 Notes | Senior Notes            
Debt Instrument [Line Items]            
Principal $ 700,000     0    
Unamortized Premium, Discount and Debt Issuance Costs 11,864     0    
Net Value $ 688,136     $ 0    
Interest rate 7.875%   7.875%