Summary of Significant Accounting Policies (Policies)	3 Months Ended
Summary of Significant Accounting Policies (Policies)	Mar. 31, 2026
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation The accompanying unaudited consolidated financial statement of BXHF has been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”). BXHF is considered an investment company under GAAP and follows the accounting and reporting guidance applicable to investment companies in the Financial Accounting Standards Board Accounting Standards Codification Topic 946, Financial Services—Investment Companies ("ASC 946"). The consolidated financial statement, including the notes, is unaudited. Management believes it has made all necessary adjustments (consisting of only normal recurring items), if applicable, so that the consolidated financial statement is presented fairly. The operating results presented for interim periods are not necessarily indicative of the results that may be expected for any other interim period or for the entire year.
Use of Estimates	Use of Estimates The preparation of the consolidated financial statement in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statement. Management believes that estimates made in preparing its consolidated financial statement are reasonable. Actual results may ultimately differ materially from those estimates.
Principles of Consolidation	Principles of Consolidation In accordance with ASC 946, BXHF generally does not consolidate its investments unless it has a controlling financial interest in an investment company or in an operating company whose business consists of providing services to BXHF. When such a controlling financial interest exists, the results of the related reporting entities are consolidated, and all intercompany balances and transactions are eliminated in consolidation.
Cash and Cash Equivalents	Cash and Cash Equivalents Cash and Cash Equivalents represents cash on hand, cash held in banks, money market funds and liquid investments with original maturities of three months or less.
Organizational and Offering Expenses	Organizational and Offering Expenses Organizational and offering costs will only be borne by BXHF when BXHF first accepts third-party investors and commences investment operations, at which time, costs associated with the organization of BXHF will be expensed as incurred. Costs associated with the offering of Units of BXHF will be capitalized as a deferred expense and included as an asset on the Statement of Assets and Liabilities and amortized over a twelve-month period from incurrence. As of March 31, 2026, BXHF had not accepted any third-party investors and investment operations have not yet commenced, therefore organizational and offering expenses are not recorded in the accompanying Statement of Assets and Liabilities.
Income Taxes	Income Taxes BXHF is treated as a partnership for income tax purposes and is not subject to income taxes. Certain intermediate entities that may be formed for use in carrying out the activities of BXHF following the commencement of operations may be subject to income taxes.

Disclosure of accounting policy for income taxes, which may include its accounting policies for recognizing and measuring deferred tax assets and liabilities and related valuation allowances, recognizing investment tax credits, operating loss carryforwards, tax credit carryforwards, and other carryforwards, methodologies for determining its effective income tax rate and the characterization of interest and penalties in the financial statements.

- Definition

Disclosure of accounting policy for the use of estimates in the preparation of financial statements in conformity with generally accepted accounting principles.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S50
-Paragraph 1
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478671/942-235-S50-1

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 942
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-05(b)(2))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477314/942-235-S99-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 12
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-12

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 9
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-9

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482836/275-10-55-6

Reference 6: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 6
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-6

Reference 7: http://www.xbrl.org/2003/role/disclosureRef
-Topic 275
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-4

Reference 8: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-SubTopic 10
-Topic 275
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-1

Reference 9: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-SubTopic 10
-Topic 275
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482861/275-10-50-1

+ Details

Blackstone Multi-Strategy Hedge Fund L.P. 10-Q