v3.26.1
Cover
 12 Months Ended
Dec. 31, 2025
USD ($)
shares
Document Information [Line Items]  
Document Type 10-K
Document Annual Report true
Document Transition Report false
Document Financial Statement Error Correction [Flag] false
Entity Interactive Data Current Yes
ICFR Auditor Attestation Flag false
Amendment Flag false
Document Period End Date Dec. 31, 2025
Document Fiscal Year Focus 2025
Document Fiscal Period Focus FY
Entity Information [Line Items]  
Entity Registrant Name AEI INCOME & GROWTH FUND XXII LIMITED PARTNERSHIP
Entity Central Index Key 0001023458
Entity File Number 000-24003
Entity Tax Identification Number 41-1848181
Entity Incorporation, State or Country Code MN
Current Fiscal Year End Date --12-31
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Shell Company false
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company false
Entity Public Float | $ $ 0
Entity Contact Personnel [Line Items]  
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
Entity Phone Fax Numbers [Line Items]  
City Area Code 651
Local Phone Number 227-7333
Entity Listings [Line Items]  
Title of 12(g) Security Limited Partnership Units
Entity Common Stock, Shares Outstanding | shares 11,263.123