v3.25.2
Debt - Narrative (Details) - USD ($)
 1 Months Ended 3 Months Ended 6 Months Ended
Aug. 01, 2025
Jun. 30, 2025
Apr. 30, 2025
Jul. 31, 2024
Jun. 30, 2025
Jun. 30, 2025
Jun. 30, 2024
Dec. 31, 2024
Notes Payable, Unsecured Notes and Credit Facility                
Commercial paper, maximum borrowing capacity   $ 1,000,000,000 $ 500,000,000   $ 1,000,000,000 $ 1,000,000,000    
Repayment of unsecured notes           525,000,000 $ 0  
Net carrying value of apartment communities and improved land parcels securing debt   20,494,489,000     20,494,489,000 20,494,489,000   $ 19,767,062,000
Interest Rate Swap, Entered Into 2025 Q2 YTD | Cash Flow Hedging                
Notes Payable, Unsecured Notes and Credit Facility                
Notional balance   450,000,000     450,000,000 450,000,000    
Interest Rate Swap, Entered Into 2025 Q2 | Cash Flow Hedging                
Notes Payable, Unsecured Notes and Credit Facility                
Notional balance   150,000,000     150,000,000 150,000,000    
Minimum                
Notes Payable, Unsecured Notes and Credit Facility                
Debt instrument, basis spread on variable rate (as a percent)     (0.02%)          
Minimum | Subsequent Event                
Notes Payable, Unsecured Notes and Credit Facility                
Debt instrument, basis spread on variable rate (as a percent) (0.02%)              
Maximum                
Notes Payable, Unsecured Notes and Credit Facility                
Debt instrument, basis spread on variable rate (as a percent)     0.02%          
Maximum | Subsequent Event                
Notes Payable, Unsecured Notes and Credit Facility                
Debt instrument, basis spread on variable rate (as a percent) 0.02%              
Asset Pledged as Collateral | Notes Payable, Other Payables                
Notes Payable, Unsecured Notes and Credit Facility                
Net carrying value of apartment communities and improved land parcels securing debt   1,227,306,000     1,227,306,000 1,227,306,000    
Credit Facility                
Notes Payable, Unsecured Notes and Credit Facility                
Available borrowing capacity   $ 2,500,000,000 $ 2,250,000,000   $ 2,500,000,000 $ 2,500,000,000   $ 2,250,000,000
Current interest rate (as a percent)   5.16%     5.16% 5.16%    
Debt instrument, basis spread on variable rate (as a percent)         0.705%      
Annual facility fee, percentage         0.12%      
Debt instrument, basis spread on variable rate, increase (decrease)       0.02%        
Line of credit facility, commitment fee percentage, increase (decrease)       0.005%        
Credit Facility | Minimum                
Notes Payable, Unsecured Notes and Credit Facility                
Debt instrument, basis spread on variable rate (as a percent)         0.65%      
Annual facility fee, percentage         0.10%      
Credit Facility | Maximum                
Notes Payable, Unsecured Notes and Credit Facility                
Debt instrument, basis spread on variable rate (as a percent)         1.40%      
Annual facility fee, percentage         0.30%      
Variable Rate Unsecured Term Loan $450 Million | Unsecured notes                
Notes Payable, Unsecured Notes and Credit Facility                
Current interest rate (as a percent)   4.46%     4.46% 4.46%    
Debt instrument, basis spread on variable rate (as a percent)         0.78%      
Assumption of fixed rate mortgage loan   $ 450,000,000     $ 450,000,000 $ 450,000,000    
Variable Rate Unsecured Term Loan $450 Million | Subsequent Event                
Notes Payable, Unsecured Notes and Credit Facility                
Current interest rate (as a percent) 4.44%              
Assumption of fixed rate mortgage loan $ 550,000,000              
Debt instrument, increase (decrease), other, net $ 100,000,000              
Variable Rate Unsecured Term Loan $450 Million | Minimum                
Notes Payable, Unsecured Notes and Credit Facility                
Debt instrument, basis spread on variable rate (as a percent)     0.70%          
Variable Rate Unsecured Term Loan $450 Million | Maximum                
Notes Payable, Unsecured Notes and Credit Facility                
Debt instrument, basis spread on variable rate (as a percent)     1.60%          
Notes Payable 3.550 Maturities 2025 | Unsecured notes                
Notes Payable, Unsecured Notes and Credit Facility                
Repayment of unsecured notes   $ 525,000,000            
Fixed interest rate   3.45%     3.45% 3.45%