| Form N-CSR Cover | 6 Months Ended |
| Jun. 30, 2024 | |
| Shareholder Report [Line Items] | |
| Document Type | N-CSRS |
| Amendment Flag | false |
| Registrant Name | AFL CIO Housing Investment Trust |
| Entity Central Index Key | 0000225030 |
| Entity Investment Company Type | N-1A |
| Document Period End Date | Jun. 30, 2024 |
| Shareholder Report | 6 Months Ended | |
| Jun. 30, 2024 USD ($) Holdings | ||
| Shareholder Report [Line Items] | ||
| Document Type | N-CSRS | |
| Amendment Flag | false | |
| Registrant Name | AFL CIO Housing Investment Trust | |
| Entity Central Index Key | 0000225030 | |
| Entity Investment Company Type | N-1A | |
| Document Period End Date | Jun. 30, 2024 | |
| AFL CIO HOUSING INVESTMENT TRUST | ||
| Shareholder Report [Line Items] | ||
| Fund Name | AFL CIO HOUSING INVESTMENT TRUST | |
| Class Name | AFL CIO HOUSING INVESTMENT TRUST | |
| Annual or Semi-Annual Statement [Text Block] | SEMI-ANNUAL REPORT | |
| Shareholder Report Annual or Semi-Annual | semi-annual shareholder report | |
| Additional Information [Text Block] | This semi-annual report contains important information about the AFL-CIO Housing Investment Trust (the “HIT”) for the period of January 1, 2024 to June 30, 2024. You can find additional information about the HIT at aflcio-hit.com/shareholder-reports/ 1-202-331-8055 | |
| Additional Information Phone Number | 1-202-331-8055 | |
| Additional Information Website | aflcio-hit.com/shareholder-reports/ | |
| Expenses [Text Block] | WHAT WERE THE HIT’S COSTS FOR THE PAST SIX MONTHS? BASED ON A HYPOTHETICAL $10,000 INVESTMENT The below table explains the costs that Participants would have paid within the reporting period. COSTS OF A $10,000 INVESTMENT COSTS PAID AS A PERCENTAGE OF A $10,000 INVESTMENT 1 AFL-CIO Housing Investment Trust $ 16.00 0.32 1 Expenses are equal to the HIT’s annualized six-month expense ratio of 0.32%, as of June 30, 2024 | |
| Expenses Paid, Amount | $ 16 | |
| Expense Ratio, Percent | 0.32% | [1] |
| Factors Affecting Performance [Text Block] | HOW DID THE HIT PERFORM DURING THE REPORTING PERIOD AND The HIT outperformed the Bloomberg US Aggregate Bond Index* (Bloomberg Aggregate or Benchmark) with a gross return of 0.47% and a net return of 0.31% for the first half of 2024, compared to -0.71% for the Benchmark. Interest rates rose materially throughout the first half of the year, causing investment grade fixed income strategies to broadly produce negative returns; however, the HIT was able to produce a positive total return primarily due to the strength of the multifamily sector. Entering 2024, the market had priced in six interest rate cuts, starting as early as March, but sticky inflation and a resilient labor market in the first quarter caused a drastic shift in market expectations. As the second quarter concluded, the Federal Reserve had still not cut interest rates, remaining on pause to assess the lagged impacts of its restrictive monetary policy. Consequently, the 10-year Treasury rate closed June at its second-highest quarter-end level in over 15 years. HIT’s overweight to agency-insured multifamily mortgage backed securities (MBS) as spreads tightened to Treasuries HIT’s structural underweight to corporate bonds, the second-best performing asset class in the Benchmark on an excess return basis HIT’s underweight to agency-insured, fixed-rate single family MBS and Treasuries, the worst and second-worst performing asset classes in the Benchmark on an excess return basis, respectively HIT’s overweight to the second highest credit quality sector, the worst performing asset classes in the Benchmark on an excess return basis HIT’s overweight to spread product, as spreads across most investment grade fixed income assets tightened versus Treasuries due to the attractiveness of all-in-yields and lack of new issuance | |
| Performance Past Does Not Indicate Future [Text] | Past performance is not a good predictor of future performance. | |
| Line Graph [Table Text Block] | FUND PERFORMANCE The following graph compares the initial and subsequent account values at the end of each of the most recently completed 10 fiscal years of the HIT. It assumes a $50,000 initial investment at the beginning of the first fiscal year in the Benchmark. | |
| Average Annual Return [Table Text Block] | AVERAGE ANNUAL TOTAL RETURNS 1 YEAR 5 YEAR 10 YEAR HIT Gross 3.82% -0.20% 1.52% HIT Net 3.48% -0.52% 1.14% Bloomberg Aggregate* 2.63% -0.23% 1.35% * Bloomberg Index Services Limited. BLOOMBERG ® Past performance is not a good predictor of future performance. | |
| Net Assets | $ 6,555,000,000 | |
| Holdings Count | Holdings | 933 | |
| Investment Company, Portfolio Turnover | 21.41% | |
| Additional Fund Statistics [Text Block] | KEY FUND STATISTICS HIT’s net assets $6.555 Billion Ratio of net investment income to average net assets 3.59% Portfolio turnover rate 21.41% Total number of portfolio holdings 933 Effective Duration 5.97% Current Yield 4.05% Yield to Worst 2 5.65% Advisory Fee Paid N/A 2 Yield-to-Worst is a measure of the lowest possible yield that can be received on a bond that fully operates within the terms of its contract without defaulting. It does not represent the performance yield. It is calculated by using the lower of either the yield to maturity or the yield to call on every possible call date. | |
| Holdings [Text Block] | ||
| [1]Expenses are equal to the HIT’s annualized six-month expense ratio of 0.32%, as of June 30, 2024 | ||
| Shareholder Report, Average Annual Return (Details) | 12 Months Ended | 60 Months Ended | 120 Months Ended | |
| Jun. 30, 2024 | Jun. 30, 2024 | Jun. 30, 2024 | ||
| AFL CIO HOUSING INVESTMENT TRUST | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 3.48% | (0.52%) | 1.14% | |
| Without Sales Load [Member] | AFL CIO HOUSING INVESTMENT TRUST | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | 3.82% | (0.20%) | 1.52% | |
| Bloomberg Aggregate | ||||
| Average Annual Return [Line Items] | ||||
| Average Annual Return, Percent | [1] | 2.63% | (0.23%) | 1.35% |
| [1]Bloomberg Index Services Limited. BLOOMBERG ® | ||||
| Shareholder Report, Holdings (Details) - AFL CIO HOUSING INVESTMENT TRUST | Jun. 30, 2024 |
| US Government Corporations and Agencies Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 86.60% |
| AAA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.65% |
| AA [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.04% |
| Not Rated [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 5.15% |
| Cash [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.56% |
| Multifamily [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 65.33% |
| Multifamily Construction Investments [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 14.34% |
| Single Family [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 15.61% |
| Commercial MBS [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 0.05% |
| US Treasury Securities [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 3.11% |
| Cash and Cash Equivalents [Member] | |
| Holdings [Line Items] | |
| Percent of Net Asset Value | 1.56% |
