v3.25.4
PARTNERS' CAPITAL OF AMERICAN ASSETS TRUST, L.P. (Details)
12 Months Ended
Dec. 31, 2025
shares
American Assets Trust, L.P.  
Capital Unit [Line Items]  
Ownership percent by parent 78.95%
American Assets Trust, L.P.  
Capital Unit [Line Items]  
Non-controlling common units (in shares) 16,181,537
American Assets Trust, L.P. | Common Shares  
Capital Unit [Line Items]  
Redemption ratio 1
Non-Affiliated Investors | American Assets Trust, L.P.  
Capital Unit [Line Items]  
Percentage of ownership interests classified as noncontrolling 21.05%