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Redeemable Non-Controlling Interests in Subsidiary - Schedule Of Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Class of Stock [Line Items]
Non-controlling interest holders	64.50%	66.00%	64.50%	66.00%
OpCo | Non-controlling interest holders
Class of Stock [Line Items]
Non-controlling interest holders			64.70%		64.40%
OpCo | NET Power Inc.
Class of Stock [Line Items]
NET Power Inc.	35.30%		35.30%		35.60%

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