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Percentage Of Early Deduction Units Repurchased.

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Percentage Of Repurchase Of Units Outstanding.

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Net asset value per share or per unit of investments in certain entities that calculate net asset value per share. Includes, but is not limited to, by unit, membership interest, or other ownership interest. Investment includes, but is not limited to, investment in certain hedge funds, venture capital funds, private equity funds, real estate partnerships or funds. Excludes fair value disclosure.

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Total change in each class of partners' capital accounts during the year due to redemptions and adjustments to redemption value. All partners include general, limited and preferred partners.

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The number of units redeemed during the year of each class of partners' capital account. Units represent shares of ownership of the general, limited, and preferred partners.

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The cash inflow from the issuance of common limited partners units during the period.

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Net Assets - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands	5 Months Ended	6 Months Ended	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2024	Dec. 31, 2025
Net Assets [Line Items]
Net Asset Value Per Share			$ 25
Percentage Of Repurchase Of Units Outstanding			3.00%
Percentage Of Early Deduction Units Repurchased			5.00%
Partners capital account units redeemed			32,452
Partners' capital account, redemptions			$ 800
Proceeds from issuance of common limited partners units		$ 100	$ 3,298,682
Feeder [Member]
Net Assets [Line Items]
Partners capital account units redeemed			5,154
Partners' capital account, redemptions			$ 100
BXINFRA Aggregator (CYM) L.P. [Member]
Net Assets [Line Items]
Net Asset Value Per Share			$ 25
Proceeds from issuance of common limited partners units	$ 0		$ 3,538,760
Class S Units [Member]
Net Assets [Line Items]
Proceeds from issuance of common limited partners units			12,600
Class D Units [Member]
Net Assets [Line Items]
Proceeds from issuance of common limited partners units			1,300
Class I Units [Member]
Net Assets [Line Items]
Proceeds from issuance of common limited partners units			17,800
Common Class A [Member] \| BXINFRA Aggregator (CYM) L.P. [Member]
Net Assets [Line Items]
Proceeds from issuance of common limited partners units			$ 32,200