v3.25.2
Document and Entity Information - shares
shares in Millions
 6 Months Ended
Jun. 30, 2025
Aug. 08, 2025
Document Information [Line Items]    
Document Type 10-Q  
Amendment Flag false  
Document Period End Date Jun. 30, 2025  
Document Fiscal Year Focus 2025  
Document Fiscal Period Focus Q2  
Entity Registrant Name Strategic Student & Senior Housing Trust, Inc.  
Entity Central Index Key 0001698538  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Current Fiscal Year End Date --12-31  
Entity Filer Category Non-accelerated Filer  
Entity Shell Company false  
Entity Emerging Growth Company false  
Entity Small Business true  
Entity File Number 333-220646  
Entity Incorporation, State or Country Code MD  
Entity Tax Identification Number 81-4112948  
Entity Address, Address Line One 19900 MacArthur Blvd  
Entity Address, Address Line Two Suite 250  
Entity Address, City or Town Irvine  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 92612  
City Area Code 877  
Local Phone Number 327-3485  
Document Quarterly Report true  
Document Transition Report false  
Class A Common Stock [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   11.6
Class T Common Stock [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0.1
Class W Common Stock [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0.1
Class Y Common Stock [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   1.1
Class Z Common Stock [Member]    
Document Information [Line Items]    
Entity Common Stock, Shares Outstanding   0.2