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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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