Debt (Schedule of Obligations Under Debt Arrangements) (Details) - USD ($)	Dec. 31, 2025	Feb. 28, 2025	Dec. 31, 2024	Jul. 19, 2024	Dec. 17, 2020	Dec. 11, 2017
Debt Instrument [Line Items]
Principal	$ 3,085,760,000		$ 3,776,605,000
Unamortized Discount and Debt Issuance Costs	38,945,000		48,745,000
Net Value	3,046,815,000		3,727,860,000
Senior Secured Credit Facility | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Principal	6,400,000		291,000,000
Unamortized Discount and Debt Issuance Costs	0		0
Net Value	$ 6,400,000		291,000,000
6.250% senior unsecured notes due 2026 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt interest rate						6.25%
8.000% senior unsecured notes due 2027 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt interest rate	8.00%				8.00%
Principal	$ 0		406,245,000
Unamortized Discount and Debt Issuance Costs	0		933,000
Net Value	$ 0		405,312,000
7.750% senior unsecured notes due 2028 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt interest rate	7.75%			7.75%
Principal	$ 679,360,000		679,360,000
Unamortized Discount and Debt Issuance Costs	3,123,000		4,622,000
Net Value	$ 676,237,000		674,738,000	$ 150,000,000
8.250% senior unsecured notes due 2029 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt interest rate	8.25%
Principal	$ 600,000,000		600,000,000
Unamortized Discount and Debt Issuance Costs	10,690,000		13,993,000
Net Value	$ 589,310,000		586,007,000
8.875% senior unsecured notes due 2030 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt interest rate	8.875%
Principal	$ 500,000,000		500,000,000
Unamortized Discount and Debt Issuance Costs	5,690,000		7,015,000
Net Value	$ 494,310,000		492,985,000
7.875% Senior Unsecured Notes Due 2032 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt interest rate	7.875%
Principal	$ 700,000,000		700,000,000
Unamortized Discount and Debt Issuance Costs	9,919,000		11,476,000
Net Value	$ 690,081,000		688,524,000
8.000% Senior Unsecured Notes Due 2033 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt interest rate	8.00%
Principal	$ 600,000,000		600,000,000
Unamortized Discount and Debt Issuance Costs	9,523,000		10,706,000
Net Value	590,477,000		589,294,000
5.875% Alkali senior secured notes due 2042 | Senior Notes [Member]
Debt Instrument [Line Items]
Debt interest rate		5.875%
Principal		$ 413,400,000
Revolving Loan | Line of Credit | Revolving Credit Facility
Debt Instrument [Line Items]
Unamortized debt issuance costs included in other long term assets	$ 5,400,000		$ 7,900,000