NONCONTROLLING INTERESTS (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Noncontrolling interests
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 year			$ 1,017,355
Mark-to-market adjustment to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership	$ (69,752)	$ 104,656	(116,503)	$ 180,086
Conversion of OP Units/DownREIT Units to Common Stock or Cash			(16,915)
Net income/(loss) attributable to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership	2,709	1,574	10,593	6,736
Distributions to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership			(31,193)
Redeemable Long-Term and Short-Term Incentive Plan Units			12,923
Allocation of other comprehensive income/(loss)			(133)
Redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership, at end of year	876,127		876,127
Net (income)/loss attributable to noncontrolling interests	(12)	94	(35)	(35)
Maximum
Redeemable noncontrolling interests in the Operating Partnership
Net (income)/loss attributable to noncontrolling interests	$ (100)	$ 100	$ (100)	$ (100)

Incentive Plan Operating Partnership Unit Vesting, Value

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

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The value of the financial instrument issued [noncash or part noncash] in the conversion of stock. Noncash is defined as transactions during a period that do not result in cash receipts or cash payments in the period. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or cash payments in the period.

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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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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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

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Amount of Net Income (Loss) attributable to redeemable noncontrolling interest.

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Amount after tax of other comprehensive income (loss) attributable to noncontrolling interests.

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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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