NONCONTROLLING INTERESTS (Details) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)	Sep. 30, 2026 USD ($)	Sep. 30, 2025 USD ($)
NONCONTROLLING INTERESTS
Conversion ratio	1		1
Minimum holding period prior to redemption (in years)			1 year
Redeemable noncontrolling interests in the Operating Partnership
Redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership, at beginning of period			$ 859,966
Mark-to-market adjustment to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership	$ (111,762)	$ (69,752)	(49,984)	$ (116,503)
OP Units issued for real estate, net			2,837
Conversion of OP Units/DownREIT Units to Common Stock or Cash			(32,697)
Net income/(loss) attributable to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership	14,768	2,709	32,438	10,593
Distributions to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership			(30,951)
Redeemable Long-Term and Short-Term Incentive Plan Units			17,467
Allocation of other comprehensive income/(loss)			118
Redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership, at end of period	799,194		799,194
Net (income)/loss attributable to noncontrolling interests	(12)	(12)	(35)	(35)
Maximum
Redeemable noncontrolling interests in the Operating Partnership
Net (income)/loss attributable to noncontrolling interests	$ (100)	$ (100)	$ (100)	$ (100)

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Represents the minimum period of time redeemable units must be held, subject to certain exceptions, before limited partners can redeem the units.

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Represents the operating partnership units issued for real estate, net.

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Roll forward of redeemable noncontrolling interests in the Operating Partnership during the period.

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Ratio applied to the conversion of units.

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Amount of distribution on mandatorily redeemable financial instrument issued in form of share classified as liability.

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Change in noncontrolling interest during the period as a result of a change in the redemption value of redeemable noncontrolling interest.

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Portion of net income (loss) attributable to nonredeemable noncontrolling interest.

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As of the reporting date, the aggregate carrying amount of all noncontrolling interests which are redeemable by the (parent) entity (1) at a fixed or determinable price on a fixed or determinable date, (2) at the option of the holder of the noncontrolling interest, or (3) upon occurrence of an event that is not solely within the control of the (parent) entity. This item includes noncontrolling interest holder's ownership (or holders' ownership) regardless of the type of equity interest (common, preferred, other) including all potential organizational (legal) forms of the investee entity.

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