EQUITY OFFERINGS (Details) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended			12 Months Ended
		Mar. 31, 2025		Mar. 31, 2024	Dec. 31, 2024		Oct. 24, 2024	Dec. 31, 2023
Equity Offerings [Line Items]
Issuance of shares of common stock		418,373		272,342
Forward Equity Offering Activity [Roll Forward]
Forward sale agreements settled, shares		(385,253)	[1]		(2,698,077)	[2]
Forward sale agreements settled, price per share		$ 175.07	[1]		$ 179.63	[2]
Forward sale agreements settled, gross proceeds		$ (67,446)	[1]		$ (484,653)	[2]
New forward sale agreements, shares	[3]	1,043,871			2,677,289
New forward sale agreements, price per share	[3]	$ 182.02			$ 178.32
New forward sale agreements, value	[3]	$ 190,006			$ 477,420
Forward Sale Agreements Outstanding		1,043,871			385,253			406,041
Forward Sale Agreements Outstanding, price per share		$ 182.02			$ 175.07			$ 183.92
Forward Sale Agreements Outstanding, value		$ 190,006			$ 67,446			$ 74,679
ATM Program - October 2023
Equity Offerings [Line Items]
At-the-market program, maximum aggregate gross sales price							$ 750,000
Gross Proceeds from Issuance of Common Stock							$ 746,153
Direct common stock issuances
Equity Offerings [Line Items]
Issuance of shares of common stock	[4]	33,120			1,373,459
Sale of stock, weighted average price per share		$ 183.15			$ 174.30
Gross Proceeds from Issuance of Common Stock		$ 6,066			$ 239,390
Net proceeds from issuance of common stock		6,005			$ 236,996
ATM Program - October 2024
Equity Offerings [Line Items]
At-the-market program, maximum aggregate gross sales price		$ 1,000,000

[1] EastGroup settled outstanding forward equity sale agreements by issuing 385,253 shares of common stock in exchange for net proceeds of approximately $66,902,000.

[2] EastGroup settled outstanding forward equity sale agreements by issuing 2,698,077 shares of common stock in exchange for net proceeds of approximately $480,663,000.

[3] The Company did not receive any proceeds from the sale of common shares by the forward counterparties at the time it entered into forward sale agreements.

[4] Excludes shares of common stock sold on a forward basis as described below.