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Supplemental Cash Flow Information - Summary of Cash Paid for Interest and Income Taxes (Details) - USD ($)
$ in Millions
6 Months Ended 12 Months Ended
Jun. 30, 2025
Dec. 31, 2024
Franklin Mountain Energy    
Business Combination, Pro Forma Information [Line Items]    
Issuance of common stock for FME Interests $ 785 $ 0