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Summary of Significant Accounting Policies - Other Current Liabilities (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Other Current Liabilities:    
Accrued interest payable $ 80,520 $ 88,484
Accrued taxes other than income 62,391 84,755
Current portion of lease liabilities 46,380 35,449
Current portion of long-term capacity contracts 43,233 39,589
Accrued incentive compensation 24,542 50,894
Other accrued liabilities 28,457 42,320
Total other current liabilities $ 285,523 $ 341,491