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Investments - Noncontrolling Interests (Details) $ in Millions | Jun. 30, 2026 USD ($) | Jul. 31, 2025 | May 08, 2025
--- | --- | --- | ---
Schedule of Equity Method Investments [Line Items] |  |  |
Temporary equity, investment on capital |  |  | 1.65
Temporary equity, carrying amount, attributable to parent | $ 30.2 |  |
Temporary equity, estimated redemption value | 50.4 |  |
Distributions payable to noncontrolling interest | $ 6.9 |  |
BKV-BPP Cotton Cove |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Percentage of noncontrolling interest (percent) |  | 0.49 |
BKV dCarbon Project, LLC |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Percentage of noncontrolling interest (percent) |  |  | 0.49

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- Definition Carrying amount, attributable to parent, of an entity's issued and outstanding stock which is not included within permanent equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. 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