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Invested Capital Multiple

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Percentage Shares Callable

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Put Option Cash Consideration Value

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Shareholder Distribution Threshold

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Stock Option, Exercise Price, Increase Percentage

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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The amount of unfunded commitments for which the entity is obligated, to those certain investments for which net asset value per share is calculated (including by unit, membership interest, or other equity (ownership interest) unit measure) (alternative investments).

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Indicates type of investment. Includes, but is not limited to, common stock, preferred stock, convertible security, fixed income security, government security, option purchased, warrant, loan participation and assignment, commercial paper, bankers' acceptance, certificates of deposit, short-term security, repurchase agreement, and other investment company.

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Investments - Co-Investment Agreement (Details) $ / shares in Units, € in Millions	Jun. 30, 2025 USD ($)	Apr. 30, 2025 USD ($) $ / shares	Dec. 31, 2024 USD ($)	Apr. 05, 2021 USD ($)	Apr. 05, 2021 EUR (€)
Debt and Equity Securities, FV-NI
Equity method investments	$ 97,400,000		$ 94,000,000.0
Equity securities, FV-NI	$ 118,300,000		114,600,000
Capital Commitment Condition One
Debt and Equity Securities, FV-NI
Investment, Type [Extensible Enumeration]				Common Stock	Common Stock
HTEC
Debt and Equity Securities, FV-NI
Equity investments, ownership interest (percent)	25.00%
Equity method investments	$ 72,000,000.0		$ 68,900,000
Hy24
Debt and Equity Securities, FV-NI
Equity securities, FV-NI				$ 19,000,000.0	€ 16.2
Unfunded commitment				$ 39,600,000	€ 33.8
Closing through third anniversary \| ISQ \| Corporate Joint Venture
Debt and Equity Securities, FV-NI
Shareholder distribution threshold		$ 900,000,000.0
Put option cash consideration		$ 323,000,000.0
Exercise price of option (usd per share) \| $ / shares		$ 51.20
Third Anniversary \| Corporate Joint Venture \| HTEC
Debt and Equity Securities, FV-NI
Put option internal rate of return (percent)		12.75%
Third Anniversary \| Corporate Joint Venture \| HTEC \| Common Stock
Debt and Equity Securities, FV-NI
Invested capital multiple rate		1.80
Percentage of shares callable upon exercise of call option (percent)		85.00%
Third Anniversary \| ISQ \| Corporate Joint Venture
Debt and Equity Securities, FV-NI
Percentage change in option value per share		11.25%