v3.26.1
Significant Transactions - Narrative (Details)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended 6 Months Ended
Apr. 27, 2026
USD ($)
Aug. 12, 2026
$ / shares
Jun. 30, 2026
USD ($)
apartment
Jun. 30, 2025
USD ($)
apartment
Mar. 31, 2025
USD ($)
apartment
$ / shares
shares
Jun. 30, 2026
USD ($)
apartment
Jun. 30, 2025
USD ($)
apartment
sale
Jul. 31, 2026
apartment
Dec. 31, 2025
USD ($)
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Number of apartment homes acquired | apartment       0     0    
Gain on dispositions of real estate $ 500   $ 0 $ 135,874   $ 0 $ 241,400    
Subsequent Event | Special Cash Distribution                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Distribution made to limited partner, distributions paid, per unit (in dollars per share) | $ / shares   $ 0.66              
Fixed Rate Property Debt | Secured Debt                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Long-term debt, gross     1,672,817     1,672,817     $ 1,683,772
Variable Rate Property Debt | Secured Debt                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Long-term debt, gross     $ 4,010,019     $ 4,010,019     $ 4,056,459
Disposal Group, Disposed of by Sale, Not Discontinued Operations                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Gain on dispositions of real estate             $ 241,400    
Number of apartment community sales | sale             5    
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Secured Debt                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Number of apartment communities sold | apartment     1            
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Fixed Rate Property Debt | Secured Debt                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Long-term debt, gross       107,300     $ 107,300    
Disposal Group, Disposed of by Sale, Not Discontinued Operations | Variable Rate Property Debt | Secured Debt                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Repayments of long-term debt     $ 48,700   $ 129,300        
Miami, FL                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Number of apartment homes acquired | apartment     7     14      
Proceeds from real estate and real estate joint ventures     $ 3,500     $ 7,000      
Redwood City, California | Disposal Group, Disposed of by Sale, Not Discontinued Operations                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Proceeds from real estate and real estate joint ventures     $ 73,900     $ 73,900      
Number of apartment communities sold | apartment     1     1      
Apartment homes | apartment     110     110      
Gain on dispositions of real estate     $ 0     $ 0      
San Jose, California and Minneapolis, Minnesota                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Proceeds from real estate and real estate joint ventures       $ 283,300          
San Jose, California and Minneapolis, Minnesota | Disposal Group, Disposed of by Sale, Not Discontinued Operations                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Number of apartment communities sold | apartment       2          
Boston, Massachusetts, Denver, Colorado, and San Diego, California                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Proceeds from real estate and real estate joint ventures         155,800        
Contribution to unconsolidated joint ventures         $ 91,200        
Boston, Massachusetts, Denver, Colorado, and San Diego, California | Disposal Group, Disposed of by Sale, Not Discontinued Operations                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Number of apartment communities sold | apartment         3        
Common OP Units redeemed in exchange for cash during period (in shares) | shares         2,521,132        
Distribution made to limited partner, distributions paid, per unit (in dollars per share) | $ / shares         $ 25.62        
San Francisco, California and Minneapolis, Minnesota | Disposal Group, Disposed of by Sale, Not Discontinued Operations                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Number of apartment communities | apartment       11     11    
Miami, Florida | Disposal Group, Held-for-Sale, Not Discontinued Operations                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Number of apartment communities | apartment     1     1      
San Mateo, California | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Subsequent Event                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Number of apartment communities | apartment               1  
Fort Lauderdale, Florida | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Subsequent Event                  
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]                  
Number of apartment communities | apartment               1