v3.25.2
Financial Instruments - Carrying Values and Estimated Fair Values (Details) - USD ($)
$ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Dec. 31, 2023
Non-Derivatives:        
Cash and cash equivalents $ 783,427 $ 527,591 $ 566,384 $ 679,225
Trade accounts receivable 95,700   29,667  
Current portion of long-term debt (512,045)   (521,282)  
Long-term debt (1,436,410)   (930,973)  
Derivatives:        
Deposits, money market deposits 115,500   301,800  
Interest income, money market deposits 12,900 $ 13,400    
Trade accounts receivable, lease and operate agreement 92,600      
Reimbursement of capital spares 43,152   0  
Lease and operate agreement, net pre-commissioning contractual cash flows, trade receivable 31,000      
Lease and operate agreement, post-commercial operations date, services invoiced 14,000      
Deferred financing costs $ 31,474   22,686  
Perenco | Golar debt        
Derivatives:        
Equity method investment, ownership percentage 10.06%      
Hilli        
Non-Derivatives:        
Trade accounts receivable $ 29,700      
Gimi conversion        
Non-Derivatives:        
Trade accounts payable (5,100)   (80,900)  
Engineering, procurement and construction agreement. MKII EPC        
Non-Derivatives:        
Trade accounts payable (65,100)   (100,200)  
Level 1 | Carrying value        
Non-Derivatives:        
Cash and cash equivalents 783,427   566,384  
Restricted cash and short-term deposits 123,874   150,198  
Trade accounts receivable 95,700   29,667  
Interest receivable from money-market deposits and bank accounts 1,962   2,053  
Receivable from IRS derivatives 1,415   1,745  
Trade accounts payable (82,909)   (198,906)  
Short-term debt - 2021 Unsecured Bonds (189,678)   (189,642)  
Long-term debt - 2024 Unsecured Bonds (300,000)   0  
Level 1 | Fair value        
Non-Derivatives:        
Cash and cash equivalents, fair value 783,427   566,384  
Restricted cash and short-term deposits, fair value 123,874   150,198  
Trade accounts receivable, fair value 95,700   29,667  
Interest receivable from money-market deposits and bank accounts, fair value 1,962   2,053  
Receivable from IRS derivatives, fair value 1,415   1,745  
Trade accounts payable, fair value (82,909)   (198,906)  
Short-term debt - 2021 Unsecured Bonds, fair value (190,081)   (191,147)  
Long-term debt - 2024 Unsecured Bonds, fair value (301,959)   0  
Level 2 | Carrying value        
Non-Derivatives:        
Current portion of long-term debt (326,718)   (337,299)  
Long-term debt (588,533)   (948,000)  
Long-term debt - 2025 Convertible Bonds (575,000)   0  
Level 2 | Carrying value | Oil and gas derivative        
Derivatives:        
MTM asset on TTF linked commodity swap derivatives (note 20) 46,011   105,828  
Level 2 | Carrying value | Interest rate swap        
Derivatives:        
MTM asset on TTF linked commodity swap derivatives (note 20) 21,806   33,417  
Level 2 | Fair value        
Non-Derivatives:        
Current portion of long-term debt, fair value (326,718)   (337,299)  
Long-term debt, fair value (588,533)   (948,000)  
Long-term debt - 2025 Convertible Bonds, fair value (590,399)   0  
Level 2 | Fair value | Oil and gas derivative        
Derivatives:        
MTM asset on TTF linked commodity swap derivatives (note 20) 46,011   105,828  
Level 2 | Fair value | Interest rate swap        
Derivatives:        
MTM asset on TTF linked commodity swap derivatives (note 20) $ 21,806   $ 33,417