1001 - Document - Cover Page link:presentationLink link:definitionLink link:calculationLink 1002 - Statement - Condensed Statements of Assets and Liabilities link:presentationLink link:definitionLink link:calculationLink 1003 - Statement - Condensed Statements of Assets and Liabilities (Parenthetical) link:presentationLink link:definitionLink link:calculationLink 1004 - Statement - Condensed Statements of Operations link:presentationLink link:definitionLink link:calculationLink 1005 - Statement - Condensed Statements of Changes in Net Assets link:presentationLink link:definitionLink link:calculationLink 1006 - Statement - Condensed Statements of Cash Flows link:presentationLink link:definitionLink link:calculationLink 1007 - Statement - Condensed Schedule of Investments link:presentationLink link:definitionLink link:calculationLink 1008 - Statement - Condensed Schedule of Investments Alternate link:presentationLink link:definitionLink link:calculationLink 1009 - Statement - Condensed Schedule of Investments (Parenthetical) link:presentationLink link:definitionLink link:calculationLink 1010 - Statement - Condensed Schedule of Investments (Parenthetical) Alternate link:presentationLink link:definitionLink link:calculationLink 999001 - Disclosure - Organization link:presentationLink link:definitionLink link:calculationLink 999002 - Disclosure - Summary of Significant Accounting Policies link:presentationLink link:definitionLink link:calculationLink 999003 - Disclosure - Investment in the Aggregator link:presentationLink link:definitionLink link:calculationLink 999004 - Disclosure - Investments and Fair Value Measurement link:presentationLink link:definitionLink link:calculationLink 999005 - Disclosure - Line of Credit Agreement link:presentationLink link:definitionLink link:calculationLink 999006 - Disclosure - Derivative Instruments link:presentationLink link:definitionLink link:calculationLink 999007 - Disclosure - Net Assets link:presentationLink link:definitionLink link:calculationLink 999008 - Disclosure - Income Taxes link:presentationLink link:definitionLink link:calculationLink 999009 - Disclosure - Related Party Transactions link:presentationLink link:definitionLink link:calculationLink 999010 - Disclosure - Commitments and Contingencies link:presentationLink link:definitionLink link:calculationLink 999011 - Disclosure - Financial Highlights link:presentationLink link:definitionLink link:calculationLink 999012 - Disclosure - Subsequent Events link:presentationLink link:definitionLink link:calculationLink 999013 - Disclosure - Summary of Significant Accounting Policies (Policies) link:presentationLink link:definitionLink link:calculationLink 999014 - Disclosure - Investments and Fair Value Measurement (Tables) link:presentationLink link:definitionLink link:calculationLink 999015 - Disclosure - Derivative Instruments (Tables) link:presentationLink link:definitionLink link:calculationLink 999016 - Disclosure - Net Assets (Tables) link:presentationLink link:definitionLink link:calculationLink 999017 - Disclosure - Income Taxes (Tables) link:presentationLink link:definitionLink link:calculationLink 999018 - Disclosure - Financial Highlights (Tables) link:presentationLink link:definitionLink link:calculationLink 999019 - Disclosure - Summary of Significant Accounting Policies - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999020 - Disclosure - Investment in the Aggregator - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999021 - Disclosure - Investments and Fair Value Measurement - Summary of Fair Value Measurements Recurring and Nonrecurring (Detail) link:presentationLink link:definitionLink link:calculationLink 999022 - Disclosure - Investments and Fair Value Measurement - Summary of Fair Value Measurement Inputs and Valuation Techniques (Detail) link:presentationLink link:definitionLink link:calculationLink 999023 - Disclosure - Investments and Fair Value Measurement - Summary of Fair Value Assets Measured on Recurring Basis Unobservable Input Reconciliation (Detail) link:presentationLink link:definitionLink link:calculationLink 999024 - Disclosure - Investments and Fair Value Measurement - Summary of Fair Value of Investments in Affiliates and unfunded commitment (Detail) link:presentationLink link:definitionLink link:calculationLink 999025 - Disclosure - Investments and Fair Value Measurement - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999026 - Disclosure - Line of Credit Agreement - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999027 - Disclosure - Derivative Instruments - Summary of the Aggregate Notional Amount and Fair Value of the Derivative Financial Instruments (Detail) link:presentationLink link:definitionLink link:calculationLink 999028 - Disclosure - Derivative Instruments - Summary of the Impact to the Condensed Consolidated Statements of Operations from Derivative Financial Instruments (Detail) link:presentationLink link:definitionLink link:calculationLink 999029 - Disclosure - Net Assets - Summary of the Units issued during the period (Detail) link:presentationLink link:definitionLink link:calculationLink 999030 - Disclosure - Net Assets - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999031 - Disclosure - Income Taxes - Schedule of Net Investment Income Before Provision for Taxes (Detail) link:presentationLink link:definitionLink link:calculationLink 999032 - Disclosure - Income Taxes - Schedule of Provision for Taxes (Detail) link:presentationLink link:definitionLink link:calculationLink 999033 - Disclosure - Income Taxes - Schedule of Effective Income Tax Rate to the U.S. Federal Statutory Tax Rate (Detail) link:presentationLink link:definitionLink link:calculationLink 999034 - Disclosure - Income Taxes - Schedule of Deferred Tax Assets and Liabilities (Detail) link:presentationLink link:definitionLink link:calculationLink 999035 - Disclosure - Income Taxes - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999036 - Disclosure - Related Party Transactions - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999037 - Disclosure - Commitments and Contingencies - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999038 - Disclosure - Financial Highlights - Schedule of Capital Transactions and Differing Fee Arrangements (Detail) link:presentationLink link:definitionLink link:calculationLink 999039 - Disclosure - Financial Highlights - Schedule of Capital Transactions and Differing Fee Arrangements (Detail) (Parenthetical) link:presentationLink link:definitionLink link:calculationLink 999040 - Disclosure - Subsequent Events - Additional Information (Detail) link:presentationLink link:definitionLink link:calculationLink 999041 - Disclosure - Cybersecurity Risk Management and Strategy Disclosure link:presentationLink link:definitionLink link:calculationLink Cover [Abstract] Document Information [Table] Document Information [Line Items] Document Type Amendment Flag Document Transition Report Entity Registrant Name Entity Central Index Key Document Period End Date Document Fiscal Year Focus Document Fiscal Period Focus Current Fiscal Year End Date Entity Incorporation, State or Country Code Entity File Number Entity Tax Identification Number Entity Address, Address Line One Entity Address, City or Town Entity Address, State or Province Entity Address, Postal Zip Code City Area Code Local Phone Number Entity Current Reporting Status Entity Interactive Data Current Entity Filer Category Entity Small Business Entity Emerging Growth Company Entity Ex Transition Period Entity Shell Company Entity Common Stock, Shares Outstanding Document Annual Report Entity Well-known Seasoned Issuer Entity Voluntary Filers ICFR Auditor Attestation Flag Entity Public Float Auditor Name Auditor Firm ID Auditor Location Document Financial Statement Error Correction [Flag] Class of Stock [Axis] Class of Stock [Domain] Class S Units [Member] Class S Units [Member] Class s units. Class D Units [Member] Class D Units [Member] Class d units. Class I Units [Member] Class I Units [Member] Class I Units Class N Units [Member] Class N Units [Member] Legal Entity [Axis] Entity [Domain] Blackstone Private Equity Strategies Fund TE LP [Member] Blackstone Private Equity Strategies Fund (TE) L.P. [Member] Blackstone Private Equity Strategies Fund (TE) L.P. Statement of Financial Position [Abstract] Statement [Table] Statement [Line Items] Assets [Abstract] Assets Cash and Cash Equivalents, at Carrying Value Cash and Cash Equivalents Assets Total Assets Investment Owned, Fair Value Investments at Fair Value Fair Value Investment Owned, Fair Value Deferred Costs and Other Assets Deferred Assets Other Assets Other Assets Investments in Affiliates, Subsidiaries, Associates, and Joint Ventures, Fair Value Disclosure Investments in Affiliated Investee Funds at Fair Value (Cost $893,757 as of December 31, 2025; $736,141 as of December 31, 2024) Investments in Affiliated Investee Funds Derivative Asset Derivative Assets at Fair Value (Cost $473 as of December 31, 2025; $- as of December 31, 2024) Derivative Asset, Fair Value Due From Affiliates Due from Affiliates Due from affiliates. RedemptionsReceivable Redemption Receivable Redemptions receivable. Interest And Dividend Receivable AndOther Assets Interest and Dividend Receivable and Other Assets Interest and dividend receivable and other assets. Deferred Income Tax Assets, Net Deferred Tax Assets Liabilities and Equity [Abstract] Liabilities and Net Assets Liabilities Total Liabilities Other Liabilities Due to Affiliates Servicing Fees Payable Servicing Fees Payable Servicing fees payable. Accounts Payable and Other Accrued Liabilities Accounts Payable, Accrued Expenses and Other Liabilities Payable, Investment, Purchase Payable for Investments Purchased Taxes Payable Taxes Payable Administration Fees Payable Administration Fees Payable Administration fees payable. Other Accrued Liabilities Accrued Performance Participation Allocation Management Fee Payable Management Fee Payable Deferred Income Tax Liabilities, Net Deferred Tax Liabilities Long-Term Line of Credit Credit Facilities Derivative Liability Derivative Liabilities at Fair Value (Cost $- as of September 30, 2025 and December 31, 2024) Derivative Liabilities, Fair Value Redemptions Payable Redemptions payable. Commitments and Contingencies Commitments and Contingencies Net Assets [Abstract] Net Assets Limited Partners' Capital Account Limited Partnership Unit General Partner's Share of Undistributed Earnings, Incentive Distribution Right Embedded in General Partner Interest General Partner Interest Liabilities and Equity Total Liabilities and Net Assets General Partners' Capital Account Total Net Assets Capital Units by Class [Axis] Capital Unit, Class [Domain] Capital Unit, Class A [Member] Capital Unit, Class A [Member] Capital Unit, Class B [Member] Capital Unit, Class B [Member] BXPE US Aggregator CYM L P [Member] BXPE US Aggregator (CYM) L.P [Member] Limited Partners' Capital Account, Units Issued Units issued Limited Partners' Capital Account, Units Outstanding Units outstanding Limited Partners' Capital Account, Description of Units Units authorized Investment Owned, Cost Investment owned, cost Investment Owned, Cost Derivative Liability At Cost Derivative liability at cost Derivative liability at cost. Derivative Asset At Cost Derivative asset at cost Derivative asset at cost. Investment, Issuer Affiliation [Axis] Investment, Issuer Affiliation [Domain] Investment, Affiliated Issuer [Member] Investment, Affiliated Issuer [Member] Income Statement [Abstract] Operating Expenses [Abstract] Expenses Professional Fees Professional Fees Noninterest Expense Directors Fees Directors' Fees Warehousing Fees Warehousing Fees Warehousing fees. Other Expenses Other Management Fee Expense Management Fees Organizational Cost, Expense Organizational Expenses Labor and Related Expense Performance Participation Allocation Deferred Offering Costs Amortization Deferred Offering Costs Amortization Deferred offering costs amortization. General and Administrative Expense Administration Fees Other Expenses and Losses Other Other expenses and losses. Deferred Financing Cost Amortization Deferred Financing Cost Amortization Deferred financing cost amortization. Interest Expense, Operating Interest Expense Investment Income, Investment Expense Total Expenses Investment Income, Net [Abstract] Investment Income, Interest Interest Income Other Income Other Gross Investment Income, Operating Total Income Dividend Income, Operating Dividend Income Investment Company, Contractual Fee Waived Management Fees Waived Expense Support Expense Support Expense support. Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, before Tax [Abstract] Net Realized and Unrealized Gain (Loss) on Investments, Derivative Instruments and Translation of Assets and Liabilities in Foreign Currencies Realized Investment Gains (Losses) Net Realized Gain (Loss) on Investments and Derivative Instruments Net Realized Loss on Investments and Derivative Instruments Net Increase in Net Assets Resulting from Operations Net Increase in Net Assets Resulting from Operations Unrealized Gain (Loss) on Investments Net Change in Unrealized Gain (Loss) on Investments Net Change in Unrealized Gain (Loss) on Investments Realized Gain (Loss), Foreign Currency Transaction, Excluding Investment Price Change, before Tax Net Change in Unrealized Gain (Loss) on Translation of Assets and Liabilities in Foreign Currencies Net Change in Unrealized Gain (Loss) on Translation of Assets and Liabilities in Foreign Currencies Gain (Loss), Investment and Derivative, Operating, and Foreign Currency Transaction, before Tax, Total Net Realized and Unrealized Gain (Loss) on Investments, Derivative Instruments and Translation of Assets and Liabilities in Foreign Currencies Unrealized Gain (Loss) on Derivatives Net Change in Unrealized Gain (Loss) on Derivative Instruments Net Change in Unrealized Gain (Loss) on Derivative Instruments Unrealized Gain (Loss), Investment, Derivative, and Foreign Currency Transaction, Operating, after Tax Net Change in Unrealized Gain (Loss) on Investment in the Aggregator Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest Net Investment Income (Loss) Before Provision for Taxes Income Tax Expense (Benefit) Provision for Taxes Provision for Taxes Income Tax Expense (Benefit) Investment Income, Net Net Investment Income (Loss) Net Investment Income Loss Operating Expenses Net Expenses Warehousing Fees Waived Warehousing Fees Waived Warehousing fees waived. Investment Company, Net Assets [Roll Forward] Investment Company, Change in Net Assets [Table] Investment Company, Change in Net Assets [Line Items] Net Assets Net Assets Net Assets Stock Issued During Period, Value, New Issues Proceeds from Units Issued Servicing Fees Servicing Fees Servicing fees. Stock Issued During Period, Value, Conversion of Units Conversion of Units Between Classes Stock Redeemed or Called During Period, Value Redemption of Units, Net of Early Redemption Deduction Stock Redeemed Or Called During Period Value General Partner Interest [Member] General Partner Interest [Member] General partner interest. Class A Units [Member] Class A Units [Member] Class A units. Class B Units [Member] Class B Units [Member] Class B Units. Statement of Cash Flows [Abstract] Net Cash Provided by (Used in) Operating Activities [Abstract] Operating Activities Adjustments to Reconcile Net Income (Loss) to Cash Provided by (Used in) Operating Activities [Abstract] Adjustments to Reconcile Net Increase in Net Assets Resulting from Operations to Net Cash Used in Operating Activities Realized Gain (Loss), Investment and Derivative, Operating, after Tax Net Realized Loss on Investments and Derivative Instruments Other Noncash Expense Non-Cash Directors' Fees Payment for Purchase, Investment, Operating Activity Purchases of Investments Proceeds from Disposition of Investment, Operating Activity Proceeds from Investments Unrealized Gain (Loss), Investment and Derivative, Operating, after Tax Net Change in Unrealized (Gain) Loss on Investment in the Aggregator Unrealized Gain (Loss), Foreign Currency Transaction, after Tax Net Change in Unrealized (Gain) Loss on Translation of Assets and Liabilities in Foreign Currencies Accretion (Amortization) of Discounts and Premiums, Investments Net Amortization of Debt Investments Amortization of Other Deferred Charges Deferred Costs Amortization Increase Decrease In Unrealized Gain Loss On Derivative Instruments Net Change in Unrealized (Gain) Loss on Derivative Instruments Increase decrease in unrealized gain loss on derivative instruments. Investment In Bxpe US Aggregator Investment in BXPE U.S. Investment in bxpe US aggregator. Proceeds from Equity Method Investment, Distribution Proceeds from Investment in the Aggregator Investment In The Aggregator Investment in the Aggregator Investment in the aggregator. Increase (Decrease) in Operating Capital [Abstract] Cash Flows Due to Changes in Operating Assets and Liabilities Due from Affiliates Increase (Decrease) in Other Accounts Payable and Accrued Liabilities Accounts Payable, Accrued Expenses and Other Liabilities Increase (Decrease) in Other Operating Liabilities Due to Affiliates Increase (Decrease) in Deferred Charges Deferred Assets Increase (Decrease) in Due to Affiliates Due to Affiliates Increase (Decrease) in Accounts Payable and Accrued Liabilities Accounts Payable and Accrued Expenses Increase (Decrease) in Payable for Investment Purchased Payable for Investments Purchased Increase (Decrease) in Accrued Taxes Payable Taxes Payable