| Document And Entity Information - shares | 6 Months Ended | |
| Jun. 30, 2024 | Jul. 31, 2024 | |
| Document Information Line Items | ||
| Entity Registrant Name | AEI INCOME & GROWTH FUND 25 LLC | |
| Document Type | 10-Q | |
| Current Fiscal Year End Date | --12-31 | |
| Entity Common Stock, Shares Outstanding | 36,986.36 | |
| Amendment Flag | false | |
| Entity Central Index Key | 0001185198 | |
| Entity Current Reporting Status | Yes | |
| Entity Filer Category | Non-accelerated Filer | |
| Document Period End Date | Jun. 30, 2024 | |
| Document Fiscal Year Focus | 2024 | |
| Document Fiscal Period Focus | Q2 | |
| Entity Small Business | true | |
| Entity Emerging Growth Company | false | |
| Entity Shell Company | false | |
| Document Quarterly Report | true | |
| Entity File Number | 000-50609 | |
| Entity Incorporation, State or Country Code | DE | |
| Entity Tax Identification Number | 75-3074973 | |
| Entity Address, Address Line One | 30 East 7th Street, Suite 1300 | |
| Entity Address, City or Town | St. Paul | |
| Entity Address, State or Province | MN | |
| Entity Address, Postal Zip Code | 55101 | |
| City Area Code | 651 | |
| Local Phone Number | 227-7333 | |
| Entity Information, Former Legal or Registered Name | Not Applicable | |
| No Trading Symbol Flag | true | |
| Security Exchange Name | NONE | |
| Title of 12(g) Security | Limited Liability Company Units | |
| Entity Interactive Data Current | Yes | |
| Document Transition Report | false |
| Balance Sheet - USD ($) | Jun. 30, 2024 | Dec. 31, 2023 |
| Current Assets: | ||
| Cash | $ 1,472,884 | $ 1,161,433 |
| Real Estate Investments: | ||
| Land | 5,868,790 | 5,868,790 |
| Buildings | 15,321,028 | 15,321,028 |
| Acquired Intangible Lease Assets | 2,178,056 | 2,178,056 |
| Real Estate Held for Investment, at Cost | 23,367,874 | 23,367,874 |
| Accumulated Depreciation and Amortization | (8,784,154) | (8,394,725) |
| Real Estate Held for Investment, Net | 14,583,720 | 14,973,149 |
| Real Estate Held for Sale | 0 | 405,977 |
| Total Real Estate Investments | 14,583,720 | 15,379,126 |
| Total Assets | 16,056,604 | 16,540,559 |
| Current Liabilities: | ||
| Payable to AEI Fund Management, Inc. | 178,638 | 249,999 |
| Distributions Payable | 278,351 | 284,538 |
| Unearned Rent | 27,001 | 57,573 |
| Total Current Liabilities | 483,990 | 592,110 |
| Members’ Equity: | ||
| Managing Members | (754) | (66,695) |
| Limited Members – 50,000 Units authorized; 36,986.36 and 37,158.30 Units issued and outstanding as of 6/30/2024 and 12/31/2023 | 15,573,368 | 16,015,144 |
| Total Members’ Equity | 15,572,614 | 15,948,449 |
| Total Liabilities and Members’ Equity | $ 16,056,604 | $ 16,540,559 |
| Balance Sheet (Parentheticals) - Limited Partner [Member] - shares | Jun. 30, 2024 | Dec. 31, 2023 |
| Limited Members, units authorized | 50,000 | 50,000 |
| Limited Members, units issued | 36,986.36 | 37,158.3 |
| Limited Members, units outstanding | 36,986.36 | 37,158.3 |
| Statement of Operations - USD ($) | 3 Months Ended | 6 Months Ended | ||
| Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | |
| Income Statement [Abstract] | ||||
| Rental Income | $ 384,430 | $ 398,656 | $ 807,014 | $ 798,800 |
| Expenses: | ||||
| LLC Administration – Affiliates | 59,965 | 72,544 | 129,765 | 153,133 |
| LLC Administration and Property Management – Unrelated Parties | 45,928 | 80,100 | 70,854 | 151,468 |
| Depreciation and Amortization | 174,231 | 186,481 | 354,209 | 376,824 |
| Real Estate Impairment | 0 | 90,000 | 0 | 90,000 |
| Total Expenses | 280,124 | 429,125 | 554,828 | 771,425 |
| Operating Income (Loss) | 104,306 | (30,469) | 252,186 | 27,375 |
| Other Income: | ||||
| Gain on Sale of Real Estate | 0 | 0 | 711 | 44,186 |
| Interest Income | 11,082 | 18,759 | 22,497 | 32,440 |
| Total Other Income | 11,082 | 18,759 | 23,208 | 76,626 |
| Net Income | 115,388 | (11,710) | 275,394 | 104,001 |
| Net Income (Loss) Allocated: | ||||
| Managing Members | 78,800 | 21,981 | 83,600 | 26,245 |
| Limited Members | 36,588 | (33,691) | 191,794 | 77,756 |
| Net Income | $ 115,388 | $ (11,710) | $ 275,394 | $ 104,001 |
| Net Income (Loss) per LLC Unit (in Dollars per share) | $ 0.99 | $ (0.88) | $ 5.17 | $ 2.02 |
| Weighted Average Units Outstanding – Basic and Diluted (in Shares) | 36,986 | 38,192 | 37,072 | 38,577 |
| Statement of Cash Flows - USD ($) | 3 Months Ended | 6 Months Ended | ||
| Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | |
| Cash Flows from Operating Activities: | ||||
| Net Income | $ 115,388 | $ (11,710) | $ 275,394 | $ 104,001 |
| Adjustments to Reconcile Net Income To Net Cash Provided by Operating Activities: | ||||
| Depreciation and Amortization | 389,429 | 417,769 | ||
| Real Estate Impairment | 0 | 90,000 | 0 | 90,000 |
| Gain on Sale of Real Estate | 0 | 0 | (711) | (44,186) |
| (Increase) Decrease in Rent Receivable | 0 | 3,673 | ||
| Increase (Decrease) in Payable to AEI Fund Management, Inc. | (71,361) | 30,999 | ||
| Increase (Decrease) in Unearned Rent | (30,572) | 873 | ||
| Total Adjustments | 286,785 | 499,128 | ||
| Net Cash Provided By Operating Activities | 562,179 | 603,129 | ||
| Cash Flows from Investing Activities: | ||||
| Proceeds from Sale of Real Estate | 406,688 | 1,418,133 | ||
| Cash Flows from Financing Activities: | ||||
| Distributions Paid to Members | (563,507) | (572,363) | ||
| Repurchase of Member Units | (93,909) | (456,519) | ||
| Net Cash Used For Financing Activities | (657,416) | (1,028,882) | ||
| Net Increase in Cash | 311,451 | 992,380 | ||
| Cash, beginning of period | 1,161,433 | 1,762,822 | ||
| Cash, end of period | $ 1,472,884 | $ 2,755,202 | $ 1,472,884 | $ 2,755,202 |
| Statement of Changes in Members' Equity - USD ($) | General Partner [Member] | Limited Partner [Member] | Total |
| Balance at Dec. 31, 2022 | $ 4,747 | $ 18,711,412 | $ 18,716,159 |
| Balance (in Shares) at Dec. 31, 2022 | 38,961.72 | ||
| Distributions Declared | (17,079) | $ (552,196) | $ (569,275) |
| (13,696) | (442,823) | ||
| (in Shares) | (769.76) | ||
| Net Income | $ 104,001 | ||
| Balance at Jun. 30, 2023 | 217 | $ 17,794,149 | 17,794,366 |
| Balance (in Shares) at Jun. 30, 2023 | 38,191.96 | ||
| Balance at Dec. 31, 2023 | 15,948,449 | ||
| Balance (in Shares) at Dec. 31, 2023 | 37,158.3 | ||
| Distributions Declared | (16,720) | $ (540,600) | $ (557,320) |
| (939) | (92,970) | ||
| (in Shares) | (171.94) | ||
| Net Income | $ 275,394 | ||
| Balance at Jun. 30, 2024 | $ (754) | $ 15,573,368 | $ 15,572,614 |
| Balance (in Shares) at Jun. 30, 2024 | 36,986.36 |
| Basis of Accounting | 6 Months Ended |
| Jun. 30, 2024 | |
| Accounting Policies [Abstract] | |
| Basis of Accounting [Text Block] | (1) The condensed statements included herein have been prepared by the registrant, without audit, pursuant to the rules and regulations of the Securities and Exchange Commission, and reflect all adjustments which are, in the opinion of management, necessary to a fair statement of the results of operations for the interim period, on a basis consistent with the annual audited statements. The adjustments made to these condensed statements consist only of normal recurring adjustments. Certain information, accounting policies, and footnote disclosures normally included in financial statements prepared in accordance with United States Generally Accepted Accounting Principles (US GAAP) have been condensed or omitted pursuant to such rules and regulations, although the registrant believes that the disclosures are adequate to make the information presented not misleading. It is suggested that these condensed financial statements be read in conjunction with the financial statements and the summary of significant accounting policies and notes thereto included in the registrant’s latest annual report on Form 10‑K. |
| Organization | 6 Months Ended |
| Jun. 30, 2024 | |
| Accounting Policies [Abstract] | |
| Organization, Consolidation, Basis of Presentation, Business Description and Accounting Policies [Text Block] | (2) Organization – AEI Income & Growth Fund 25 LLC (the “Company”), a Limited Liability Company, was formed on June 24, 2002 to acquire and lease commercial properties to operating tenants. The Company's operations are managed by AEI Fund Management XXI, Inc. (“AFM”), the Managing Member. Robert P. Johnson, the previous Chief Executive Officer and sole director of AFM, served as the Special Managing Member until his withdrawal date effective March 31, 2020. AFM is a wholly owned subsidiary of AEI Capital Corporation of which the Credit Trust fbo of Patricia Johnson and Patricia Johnson own a majority interest. AEI Fund Management, Inc. (“AEI”), an affiliate of AFM, performs the administrative and operating functions for the Company. |
| Recently Issued Accounting Pronouncements | 6 Months Ended |
| Jun. 30, 2024 | |
| Accounting Policies [Abstract] | |
| New Accounting Pronouncements, Policy [Policy Text Block] | (3) Recently Adopted Accounting Pronouncements – Accounting standards that have been issued or proposed by the Financial Accounting Standards Board are currently not applicable to the Company or are not expected to have a significant impact on the Company’s financial position, results of operations and cash flows. |
| Real Estate Investments | 6 Months Ended |
| Jun. 30, 2024 | |
| Real Estate [Abstract] | |
| Real Estate Disclosure [Text Block] | (4) Real Estate Investments – In September 2022, the Company entered into an agreement to sell its 60% interest in the Biomat property in Wichita, Kansas to an unrelated third party. The property was classified as real estate held for sale at December 31, 2022. On February 9, 2023, the sale closed with the Company receiving net proceeds of $1,418,133, which resulted in a net gain of $44,186. At the time of sale, the cost and related accumulated depreciation was $2,839,297 and $1,465,350, respectively. In June 2023, the Company entered into an agreement with the tenant of the Piedmont Health (Fka Coliseum Health) property in Macon, Georgia to extend the lease term 87 months commencing on April 1, 2024 and expiring on June 30, 2031. As an inducement for the Tenant’s extension of the lease term, fixed rent will be abated for the first three months of the new lease term. As part of the agreement, the annual rent decreased from $168,948 to $167,375 effective July 1, 2024. The Company also agrees to pay a commission to Tenant’s real estate broker in the amount of 2% of the Fixed Rent to be paid during the period from April 1, 2024, to June 30, 2031, which is the amount of $23,968. The commission is recorded within acquired intangible lease assets on the balance sheet and will be amortized over the lease term. The Company owned a 100% interest in a Premier Diagnostic Imaging Center in Terre Haute, Indiana. In June 2023, the Company performed a long-lived asset valuation analysis and determined the Premier Diagnostic Imaging Center in Terre Haute, Indiana was impaired. As a result, in the second quarter of 2023, the Company recognized real estate impairment of $90,000 to decrease the carrying value to the estimated fair value of $1,401,977. The charge was recorded against the land, building, in-place lease and above market lease. In December 2023, the Company performed another long-lived asset valuation analysis and determined the Premier Diagnostic Imaging Center in Terre Haute, Indiana was impaired. As a result, in the fourth quarter of 2023, the Company recognized real estate impairment of $996,000 to decrease the carrying value to the estimated fair value of $405,977. The charge was recorded against the land, building, in-place lease and above market lease. This property was classified as Real Estate Held for Sale on the balance sheet as of December 31, 2023 with a carrying value of $405,977. In November 2023, the Company entered into an agreement to sell its 100% interest in the Premier Diagnostic Imaging Center in Terre Haute, Indiana. On January 2, 2024, the sale closed with the Company receiving net proceeds of $406,688, which resulted in a net gain of $711. At the time of sale, the cost and related accumulated depreciation was $1,248,000 and $842,023, respectively. |
| Payable to AEI Fund Management, Inc. | 6 Months Ended |
| Jun. 30, 2024 | |
| Payables and Accruals [Abstract] | |
| Accounts Payable and Accrued Liabilities Disclosure [Text Block] | (5) Payable to AEI Fund Management, Inc. – AEI Fund Management, Inc. performs the administrative and operating functions for the Company. The payable to AEI Fund Management represents the balance due for those services. This balance is non-interest bearing and unsecured and is to be paid in the normal course of business. |
| Members' Equity | 6 Months Ended |
| Jun. 30, 2024 | |
| Disclosure Text Block Supplement [Abstract] | |
| Members' Equity Notes Disclosure [Text Block] | (6) Members’ Equity – For the six months ended June 30, 2024 and 2023, the Company declared distributions of $557,320 and $569,275, respectively. The Limited Members were allocated distributions of $540,600 and $552,196 and the Managing Members were allocated distributions of $16,720 and $17,079 for the periods ended June 30, 2024 and 2023, respectively. The Limited Members’ declared distributions represented $14.58 and $14.31 per LLC Unit outstanding using 37,072 and 38,577 weighted average Units in 2024 and 2023, respectively. The declared distributions represented $5.17 and $2.02 per Unit of Net Income and $9.41 and $12.29 per Unit of return of contributed capital in 2024 and 2023, respectively. 8 AEI INCOME & GROWTH FUND 25 LLC CONDENSED NOTES TO FINANCIAL STATEMENTS (6) Members’ Equity (Continued) – On April 1, 2024, the Company repurchased a total of 171.94 Units for $92,970 from 8 Limited Members in accordance with the Operating Agreement. The Company acquired these Units using net sales proceeds. The repurchase increases the remaining Limited Members' ownership interest in the Company. As a result of this repurchase and pursuant to the Operating Agreement, the Managing Members received distributions of $939 in the second quarter of 2024. On April 1, 2023, the Company repurchased a total of 769.76 Units for $442,823 from 30 Limited Members in accordance with the Operating Agreement. The Company acquired these Units using net sales proceeds. The repurchase increased the remaining Limited Members' ownership interest in the Company. As a result of this repurchase and pursuant to the Operating Agreement, the Managing Members received distributions of $13,696 in the second quarter of 2023. |
| Fair Value Measurements | 6 Months Ended |
| Jun. 30, 2024 | |
| Fair Value Disclosures [Abstract] | |
| Fair Value Disclosures [Text Block] | (7) Fair Value Measurements – At June 30, 2024, the Company had no financial assets or liabilities measured at fair value on a recurring basis or nonrecurring basis. At December 31, 2023, the Company had one property measured on a nonrecurring basis that was recorded at fair value during 2023. The fair value of the Premier Diagnostic Imaging Center in Terre Haute, Indiana was based upon a signed purchase agreement, which is considered a Level 2 input in the valuation hierarchy. A Level 2 input includes quoted market prices for similar assets, quoted market prices in an inactive market, and other observable information that can be corroborated by market data. |
| Real Estate Investments (Details) - USD ($) | 3 Months Ended | 6 Months Ended | 87 Months Ended | |||||||
| Jun. 30, 2023 | Jun. 01, 2023 | Feb. 09, 2023 | Jun. 30, 2022 | Sep. 21, 2017 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2031 | |
| Real Estate Investments (Details) [Line Items] | ||||||||||
| Gain (Loss) on Disposition of Assets | $ 0 | $ 0 | $ 711 | $ 44,186 | ||||||
| Average Lease Term | November 2023 | |||||||||
| Impairment of Real Estate | $ 996,000 | $ 0 | 90,000 | $ 0 | 90,000 | |||||
| Real Estate Investments, Other | 405,977 | 405,977 | 405,977 | |||||||
| Coliseum Health Macon GA | ||||||||||
| Real Estate Investments (Details) [Line Items] | ||||||||||
| Average Lease Term | In June 2023, the Company entered into an agreement with the tenant of the Piedmont Health (Fka Coliseum Health) property in Macon, Georgia to extend the lease term 87 months commencing on April 1, 2024 and expiring on June 30, 2031 | |||||||||
| Revenue from Contract with Customer, Excluding Assessed Tax | $ 167,375 | |||||||||
| Payments for Lease Commissions | $ 23,968 | |||||||||
| Premier Diagnostics Terre Haute IN | ||||||||||
| Real Estate Investments (Details) [Line Items] | ||||||||||
| Impairment of Real Estate | 90,000 | |||||||||
| Property, Plant, and Equipment, Fair Value Disclosure | $ 1,401,977 | $ 1,401,977 | $ 1,401,977 | |||||||
| Biomat Wichita KS 'Member" | ||||||||||
| Real Estate Investments (Details) [Line Items] | ||||||||||
| Disposal Date | Feb. 09, 2023 | |||||||||
| Proceeds from Sale of Real Estate | $ 1,418,133 | |||||||||
| Gain (Loss) on Disposition of Assets | 44,186 | |||||||||
| SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Cost of Investment in Real Estate Sold | 2,839,297 | |||||||||
| SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation | $ 1,465,350 | |||||||||
| Staples Clermont FL 'Member' | ||||||||||
| Real Estate Investments (Details) [Line Items] | ||||||||||
| Disposal Date | Jan. 02, 2024 | |||||||||
| Premier Diagnostics Terre Haute IN | ||||||||||
| Real Estate Investments (Details) [Line Items] | ||||||||||
| Proceeds from Sale of Real Estate | $ 406,688 | |||||||||
| Gain (Loss) on Disposition of Assets | 711 | |||||||||
| SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Cost of Investment in Real Estate Sold | 1,248,000 | |||||||||
| SEC Schedule, 12-28, Real Estate Companies, Investment in Real Estate, Accumulated Depreciation | $ 842,023 | |||||||||
| Members' Equity (Details) - USD ($) | 3 Months Ended | 6 Months Ended | ||||
| Jun. 30, 2024 | Mar. 31, 2024 | Jun. 30, 2023 | Mar. 31, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | |
| Members' Equity (Details) [Line Items] | ||||||
| Distribution Made to Limited Partner, Cash Distributions Declared | $ 278,351 | $ 278,969 | $ 283,093 | $ 286,182 | $ 557,320 | $ 569,275 |
| Partners' Capital Account, Units, Redeemed (in Shares) | 171.94 | 769.76 | ||||
| Partners' Capital Account, Redemptions | 93,909 | 456,519 | ||||
| Limited Partner [Member] | ||||||
| Members' Equity (Details) [Line Items] | ||||||
| Distribution Made to Limited Partner, Cash Distributions Declared | $ 270,000 | 270,600 | $ 274,600 | 277,596 | $ 540,600 | $ 552,196 |
| Distribution Made to Limited Partner, Distributions Declared, Per Unit (in Dollars per share) | $ 14.58 | $ 14.31 | ||||
| Weighted Average Limited Partnership Units Outstanding, Basic (in Shares) | 37,072 | 38,577 | ||||
| DistributionsPerUnitOfNetIncome (in Dollars per share) | $ 5.17 | $ 2.02 | ||||
| DistributionsPerUnitOfReturnOfCapital (in Dollars per share) | $ 9.41 | $ 12.29 | ||||
| Partners' Capital Account, Units, Redeemed (in Shares) | 171,940,000 | 769,760,000 | ||||
| Partners' Capital Account, Redemptions | $ 92,970 | $ 442,823 | $ 92,970 | $ 442,823 | ||
| General Partner [Member] | ||||||
| Members' Equity (Details) [Line Items] | ||||||
| Distribution Made to Limited Partner, Cash Distributions Declared | 8,351 | $ 8,369 | 8,493 | $ 8,586 | 16,720 | 17,079 |
| Partners' Capital Account, Redemptions | $ 939 | $ 13,696 | $ 939 | $ 13,696 | ||
| Label | Element | Value |
| General Partner [Member] | ||
| Net Income | us-gaap_ProfitLoss | $ 4,264 |
| Net Income | us-gaap_ProfitLoss | 21,981 |
| Net Income | us-gaap_ProfitLoss | 4,800 |
| Net Income | us-gaap_ProfitLoss | 78,800 |
| Partners' Capital | us-gaap_PartnersCapital | 425 |
| Partners' Capital | us-gaap_PartnersCapital | (66,695) |
| Partners' Capital | us-gaap_PartnersCapital | (70,264) |
| Limited Partner [Member] | ||
| Net Income | us-gaap_ProfitLoss | 111,447 |
| Net Income | us-gaap_ProfitLoss | (33,691) |
| Net Income | us-gaap_ProfitLoss | 155,206 |
| Net Income | us-gaap_ProfitLoss | 36,588 |
| Partners' Capital | us-gaap_PartnersCapital | 18,545,263 |
| Partners' Capital | us-gaap_PartnersCapital | 16,015,144 |
| Partners' Capital | us-gaap_PartnersCapital | $ 15,899,750 |
