v3.26.1
FAIR VALUE OF DERIVATIVES AND FINANCIAL INSTRUMENTS (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Asset Derivatives designated as hedging instruments, Fair Value $ 1,071 $ 272
Debt instruments - fair value    
Redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership 819,753 859,966
Transfers between levels of fair value hierarchy 0  
Carrying Amount | Fair Value, Measurements, Recurring    
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Notes receivable 153,564 149,979
Total assets 155,733 151,730
Debt instruments - fair value    
Total liabilities 5,682,994 5,842,034
Redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership 819,753 859,966
Carrying Amount | Equity Securities | Fair Value, Measurements, Recurring    
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Equity securities 1,098 1,479
Carrying Amount | Interest rate products | Fair Value, Measurements, Recurring    
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Asset Derivatives designated as hedging instruments, Fair Value 1,071 272
Estimate of Fair Value | Fair Value, Measurements, Recurring    
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Notes receivable 153,320 144,160
Total assets 155,489 145,911
Debt instruments - fair value    
Total liabilities 5,312,085 5,487,211
Redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership 819,753 859,966
Estimate of Fair Value | Equity Securities | Fair Value, Measurements, Recurring    
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Equity securities 1,098 1,479
Estimate of Fair Value | Interest rate products | Fair Value, Measurements, Recurring    
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Asset Derivatives designated as hedging instruments, Fair Value 1,071 272
Estimate of Fair Value | Level 1 | Fair Value, Measurements, Recurring    
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Total assets 1,098 1,479
Estimate of Fair Value | Level 1 | Equity Securities | Fair Value, Measurements, Recurring    
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Equity securities 1,098 1,479
Estimate of Fair Value | Level 2 | Fair Value, Measurements, Recurring    
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Total assets 1,071 272
Debt instruments - fair value    
Redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership 819,753 859,966
Estimate of Fair Value | Level 2 | Interest rate products | Fair Value, Measurements, Recurring    
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Asset Derivatives designated as hedging instruments, Fair Value 1,071 272
Estimate of Fair Value | Level 3 | Fair Value, Measurements, Recurring    
Estimated fair values of the financial instruments either recorded or disclosed on a recurring basis    
Notes receivable 153,320 144,160
Total assets 153,320 144,160
Debt instruments - fair value    
Total liabilities 5,312,085 5,487,211
Unsecured Debt | Carrying Amount | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 4,406,214 4,406,646
Unsecured Debt | Estimate of Fair Value | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 4,078,914 4,092,949
Unsecured Debt | Estimate of Fair Value | Level 3 | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 4,078,914 4,092,949
Unsecured Debt | Revolving Credit Facility | Carrying Amount | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 135,000  
Unsecured Debt | Revolving Credit Facility | Estimate of Fair Value | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 135,000  
Unsecured Debt | Revolving Credit Facility | Estimate of Fair Value | Level 3 | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 135,000  
Unsecured Debt | Working Capital Credit Facility | Carrying Amount | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 9,553 26,381
Unsecured Debt | Working Capital Credit Facility | Estimate of Fair Value | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 9,553 26,381
Unsecured Debt | Working Capital Credit Facility | Estimate of Fair Value | Level 3 | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 9,553 26,381
Unsecured Debt | Commercial Paper | Carrying Amount | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 170,000 445,000
Unsecured Debt | Commercial Paper | Estimate of Fair Value | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 170,000 445,000
Unsecured Debt | Commercial Paper | Estimate of Fair Value | Level 3 | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 170,000 445,000
Fixed Rate Debt | Secured Debt | Mortgages loans | Carrying Amount | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 935,227 937,007
Fixed Rate Debt | Secured Debt | Mortgages loans | Estimate of Fair Value | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 891,618 895,881
Fixed Rate Debt | Secured Debt | Mortgages loans | Estimate of Fair Value | Level 3 | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 891,618 895,881
Variable Rate Debt | Secured Debt | Tax-exempt secured notes payable | Carrying Amount | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 27,000 27,000
Variable Rate Debt | Secured Debt | Tax-exempt secured notes payable | Estimate of Fair Value | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value 27,000 27,000
Variable Rate Debt | Secured Debt | Tax-exempt secured notes payable | Estimate of Fair Value | Level 3 | Fair Value, Measurements, Recurring    
Debt instruments - fair value    
Fair value $ 27,000 $ 27,000