Investments and Fair Value Measurement - Summary of Valuation of Investments by the Fair Value Hierarchy Levels (Details) - USD ($)		Dec. 31, 2025	Dec. 31, 2024	[1]
Cash and cash equivalent
Cash and cash equivalents		$ 0
Investments
Fair Value		774,862,476	$ 0
Total cash and investments		774,862,476
Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Cash and cash equivalent
Cash and cash equivalents		36,361,729
Investments
Fair Value		1,152,608,352
Derivative assets		2,362,085
Total cash and investments		1,191,332,166
Liabilities
Derivative Liabilities		$ (1,270,032)
Derivative Liability, Statement of Financial Position [Extensible Enumeration]		Derivative Liabilities
Stonepeak-Plus Infrastructure Fund Master Aggregator LP | Cash held at banks
Cash and cash equivalent
Cash and cash equivalents		$ 0
Stonepeak-Plus Infrastructure Fund Master Aggregator LP | Money market fund
Cash and cash equivalent
Cash and cash equivalents		36,361,729
Affiliated investee funds
Investments
Fair Value		770,904,647
Affiliated investee funds | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		496,511,870
Other Affiliated Investments
Investments
Fair Value	[2]	3,957,829
Other Affiliated Investments | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		643,929,648
Debt Investments | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		12,166,834
Level I
Cash and cash equivalent
Cash and cash equivalents		0
Investments
Total cash and investments		0
Level I | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Cash and cash equivalent
Cash and cash equivalents		36,361,729
Investments
Fair Value		0
Derivative assets		0
Total cash and investments		36,361,729
Liabilities
Derivative Liabilities		0
Level I | Stonepeak-Plus Infrastructure Fund Master Aggregator LP | Cash held at banks
Cash and cash equivalent
Cash and cash equivalents		0
Level I | Stonepeak-Plus Infrastructure Fund Master Aggregator LP | Money market fund
Cash and cash equivalent
Cash and cash equivalents		36,361,729
Level I | Affiliated investee funds
Investments
Fair Value		0
Level I | Affiliated investee funds | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		0
Level I | Other Affiliated Investments
Investments
Fair Value		0
Level I | Other Affiliated Investments | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		0
Level I | Debt Investments | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		0
Level II
Cash and cash equivalent
Cash and cash equivalents		0
Investments
Total cash and investments		0
Level II | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Cash and cash equivalent
Cash and cash equivalents		0
Investments
Fair Value		0
Derivative assets		2,362,085
Total cash and investments		2,362,085
Liabilities
Derivative Liabilities		(1,270,032)
Level II | Stonepeak-Plus Infrastructure Fund Master Aggregator LP | Cash held at banks
Cash and cash equivalent
Cash and cash equivalents		0
Level II | Stonepeak-Plus Infrastructure Fund Master Aggregator LP | Money market fund
Cash and cash equivalent
Cash and cash equivalents		0
Level II | Affiliated investee funds
Investments
Fair Value		0
Level II | Affiliated investee funds | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		0
Level II | Other Affiliated Investments
Investments
Fair Value		0
Level II | Other Affiliated Investments | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		0
Level II | Debt Investments | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		0
Level III
Cash and cash equivalent
Cash and cash equivalents		0
Investments
Fair Value		3,957,829
Total cash and investments		3,957,829
Level III | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Cash and cash equivalent
Cash and cash equivalents		0
Investments
Fair Value		629,951,339
Derivative assets		0
Total cash and investments		629,951,339
Liabilities
Derivative Liabilities		0
Level III | Stonepeak-Plus Infrastructure Fund Master Aggregator LP | Cash held at banks
Cash and cash equivalent
Cash and cash equivalents		0
Level III | Stonepeak-Plus Infrastructure Fund Master Aggregator LP | Money market fund
Cash and cash equivalent
Cash and cash equivalents		0
Level III | Affiliated investee funds
Investments
Fair Value		0
Level III | Affiliated investee funds | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		0
Level III | Other Affiliated Investments
Investments
Fair Value		3,957,829
Level III | Other Affiliated Investments | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		617,784,505
Level III | Debt Investments | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		12,166,834
NAV
Cash and cash equivalent
Cash and cash equivalents		0
Investments
Fair Value		770,904,647
Total cash and investments		770,904,647
NAV | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Cash and cash equivalent
Cash and cash equivalents		0
Investments
Fair Value		522,657,013
Derivative assets		0
Total cash and investments		522,657,013
Liabilities
Derivative Liabilities		0
NAV | Stonepeak-Plus Infrastructure Fund Master Aggregator LP | Cash held at banks
Cash and cash equivalent
Cash and cash equivalents		0
NAV | Stonepeak-Plus Infrastructure Fund Master Aggregator LP | Money market fund
Cash and cash equivalent
Cash and cash equivalents		0
NAV | Affiliated investee funds
Investments
Fair Value		770,904,647
NAV | Affiliated investee funds | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		496,511,870
NAV | Other Affiliated Investments
Investments
Fair Value		0
NAV | Other Affiliated Investments | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		26,145,143
NAV | Debt Investments | Stonepeak-Plus Infrastructure Fund Master Aggregator LP
Investments
Fair Value		$ 0

[1] The financial statements were not consolidated as of December 31, 2024.

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