v3.23.2

ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Additional Information (Details)	12 Months Ended
	Mar. 31, 2023 shares	Mar. 31, 2022 shares
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Units of limited partnership interest, authorized	101,500,000	101,500,000
Limited partners capital account per units	10
Amortization Period Of Acquisition Costs Straight Line Method	27 years 6 months
Tax Credit
ORGANIZATION AND SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES
Limited Liability Company (LLC) or Limited Partnership (LP), Members or Limited Partners, Ownership Interest	99.00%
Limited Liability Company (LLC) or Limited Partnership (LP), Managing Member or General Partner, Ownership Interest	1.00%

Amortization period of capitalization acquisition costs recognized on a straight-line basis.

+ References

No definition available.

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- Definition

Per unit rate of limited partners capital account.

+ References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Percentage investment held by the managing member or general partner of the limited liability company (LLC) or limited partnership (LP).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 272
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482987/272-10-50-3

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- Definition

Percentage investment held by members or limited partners of limited liability company (LLC) or limited partnership (LP).

+ References

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- Definition

The number of limited partner units authorized to be issued.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 5
-Subparagraph (SAB Topic 4.F)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147480008/505-10-S99-5

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BF Garden Tax Credit Fund IV L.P. 10-K