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Income Taxes - Schedule of the Reconciles the Aggregator's Effective Income Tax Rate to the U.S.Federal Statutory Tax Rate (Detail) - BXINFRA Aggregator (CYM) L.P. [Member]
 5 Months Ended 12 Months Ended
Dec. 31, 2024
Dec. 31, 2025
Schedule of the reconciles the Aggregators effective income tax rate to the U.S. federal statutory tax rate [Line Items]    
Statutory U.S. Federal Income Tax Rate 0.00% 21.00%
Income Not Subject to Income Tax [1] 0.00% (19.80%)
State and Local Income Taxes [2] 0.00% 0.10%
Effective Income Tax Rate 0.00% 1.30%
[1] Income Not Subject to Income Tax generally refers to the Aggregator’s income that is not effectively connected with a U.S. trade or business nor subject to U.S. corporate income tax, which reduces its effective income tax rate.
[2] State and Local Income Taxes refers to taxes imposed by individual states and local governments on income, property and sales. These taxes vary by jurisdiction and can significantly impact a corporation’s overall effective tax rate.