NONCONTROLLING INTERESTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
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	$ 961,087
Mark-to-market adjustment to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership	(134,688)	148,362	$ (10,211)
Conversion of OP Units/DownREIT Units to Common Stock or Cash	(25,257)	(73,196)
Net income/(loss) attributable to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership	25,965	6,246	30,104
Distributions to redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership	(41,161)	(52,250)
Redeemable Long-Term and Short-Term Incentive Plan Units	17,905	27,175
Allocation of other comprehensive income/(loss)	(153)	(69)
Redeemable noncontrolling interests in the Operating Partnership and DownREIT Partnership, at end of year	859,966	1,017,355	961,087
Net (income)/loss attributable to noncontrolling interests	(46)	(46)	(31)
Maximum
Redeemable noncontrolling interests in the Operating Partnership
Net (income)/loss attributable to noncontrolling interests	$ (100)	$ (100)	$ (100)