v3.25.3

Summary of Significant Accounting Policies - Narrative (Details)	9 Months Ended
	Sep. 30, 2025 USD ($) segment	Aug. 22, 2025	Dec. 31, 2024 USD ($)	Feb. 29, 2024	Feb. 26, 2024	Dec. 05, 2023
Property, Plant and Equipment [Line Items]
Number of operating segments \| segment	1
Number of reportable segments \| segment	1
Amortization period for definite-lived intangibles	14 years
Revenue from fixed and variable consideration, through December 31, 2027	$ 62,940,000
Revenue from fixed and variable consideration, thereafter	269,000,000
Receivables from contracts with customers	$ 0		$ 0
Alta Mesa
Property, Plant and Equipment [Line Items]
Ownership interest in subsidiary as a result of transaction (as a percent)				70.00%	70.00%	70.00%
Noncontrolling ownership percentage				30.00%
Alta Mesa \| Boss
Property, Plant and Equipment [Line Items]
Noncontrolling ownership percentage		30.00%			30.00%	30.00%

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Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right to consideration is unconditional.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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enCore Energy Corp. 10-Q