Fair Value Measurements - Investments - Schedule of Investment Holdings (Details) $ in Thousands	3 Months Ended
Mar. 31, 2024 USD ($)
Infrastructure Assets [Roll Forward]
Balance as of December 31, 2023	$ 983,552
Purchases	24,111
Net change in unrealized appreciation on investments	29,713
Net change in unrealized depreciation on foreign currency translation	(16,215)
Balance as of March 31, 2024	1,021,161
Infrastructure Assets
Infrastructure Assets [Roll Forward]
Balance as of December 31, 2023	983,552
Purchases	24,111
Net change in unrealized appreciation on investments	29,713
Net change in unrealized depreciation on foreign currency translation	(16,215)
Balance as of March 31, 2024	$ 1,021,161

Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Gain (Loss) On Investments

No definition available.

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- Definition

Fair Value, Measurement With Unobservable Inputs Reconciliation, Recurring Basis, Asset, Translation Adjustment Gain (Loss)

+ References

No definition available.

+ Details

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

+ Details

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- Definition

Amount of purchases of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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- Definition

Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-SubTopic 10
-Topic 820
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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