Investments and Fair Value Measurement - Valuation of Investments by the Fair Value Hierarchy Levels (Details) - USD ($)		Mar. 31, 2026	Dec. 31, 2025
Assets
Cash		$ 0	$ 0
Investments
Fair Value		936,589,565	774,862,476
Total cash and investments		936,589,565	774,862,476
Affiliated investee funds
Investments
Fair Value		932,664,293	770,904,647
Other Affiliated Investments
Investments
Fair Value	[1]	3,925,272	3,957,829
Level I
Assets
Cash		0	0
Investments
Total cash and investments		0	0
Level I | Affiliated investee funds
Investments
Fair Value		0	0
Level I | Other Affiliated Investments
Investments
Fair Value		0	0
Level II
Assets
Cash		0	0
Investments
Total cash and investments		0	0
Level II | Affiliated investee funds
Investments
Fair Value		0	0
Level II | Other Affiliated Investments
Investments
Fair Value		0	0
Level III
Assets
Cash		0	0
Investments
Fair Value		3,925,272	3,957,829
Total cash and investments		3,925,272	3,957,829
Level III | Affiliated investee funds
Investments
Fair Value		0	0
Level III | Other Affiliated Investments
Investments
Fair Value		3,925,272	3,957,829
NAV
Assets
Cash		0	0
Investments
Fair Value		932,664,293	770,904,647
Total cash and investments		932,664,293	770,904,647
NAV | Affiliated investee funds
Investments
Fair Value		932,664,293	770,904,647
NAV | Other Affiliated Investments
Investments
Fair Value		$ 0	$ 0

[1] EMEA is defined as Europe, Middle East and Africa.