| Document And Entity Information | Jul. 26, 2023 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Jul. 26, 2023 |
| Entity Registrant Name | Greystone Housing Impact Investors LP |
| Entity Central Index Key | 0001059142 |
| Entity Emerging Growth Company | false |
| Securities Act File Number | 001-41564 |
| Entity Incorporation, State or Country Code | DE |
| Entity Tax Identification Number | 47-0810385 |
| Entity Address, Address Line One | 14301 FNB Parkway, Suite 211 |
| Entity Address, City or Town | Omaha |
| Entity Address, State or Province | NE |
| Entity Address, Postal Zip Code | 68154 |
| City Area Code | 402 |
| Local Phone Number | 952-1235 |
| Entity Information, Former Legal or Registered Name | Not Applicable |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | Beneficial Unit Certificates representing assignments of limited partnership interests in Greystone Housing Impact Investors LP |
| Trading Symbol | GHI |
| Security Exchange Name | NYSE |
