REAL ESTATE PROPERTY ACQUISITIONS AND ACQUIRED INTANGIBLES (Details)		3 Months Ended		12 Months Ended
		Mar. 31, 2025 USD ($)	Mar. 31, 2024 USD ($)	Dec. 31, 2024 USD ($) ft²
Asset Acquisition [Line Items]
Amortization expense for lease intangibles		$ 3,218,000	$ 1,926,000
Amortization of above and below market leases		1,567,000	$ 607,000
Land		891,539,000		$ 888,140,000
Building and building improvements		3,862,774,000		3,815,850,000
Tenant and other improvements		773,925,000		761,061,000
Right of use assets - Ground leases (operating)	[1]	37,526,000		38,393,000
In-place lease intangibles		58,355,000		59,101,000
Above market lease intangibles		564,000		564,000
Below market lease intangibles		$ 29,087,000		29,198,000
2024 Acquisitions
Asset Acquisition [Line Items]
Land				41,815,000
Building and building improvements				312,911,000
Tenant and other improvements				27,049,000
Right of use assets - Ground leases (operating)				21,836,000
Total real estate properties acquired				403,611,000
In-place lease intangibles	[2]			27,102,000
Above market lease intangibles	[2]			121,000
Below market lease intangibles	[3]			(18,987,000)
Operating lease liabilities - Ground leases	[4]			(21,836,000)
Assets acquired, net of liabilities assumed				$ 390,011,000
Weighted average remaining lease term of acquired properties				4 years 1 month 6 days
2024 Operating Property Acquisitions
Asset Acquisition [Line Items]
Size (square feet) | ft²	[5],[6]			2,474,000
Asset Acquisition, Consideration Transferred	[5],[6],[7]			$ 390,011,000
2024 Operating Property Acquisitions | Spanish Ridge Industrial Park
Asset Acquisition [Line Items]
Size (square feet) | ft²	[5],[6]			231,000
Date Acquired	[5],[6]			Jan. 23, 2024
Asset Acquisition, Consideration Transferred	[5],[6],[7]			$ 54,859,000
2024 Operating Property Acquisitions | 147 Exchange
Asset Acquisition [Line Items]
Size (square feet) | ft²	[5],[6]			274,000
Date Acquired	[5],[6]			May 03, 2024
Asset Acquisition, Consideration Transferred	[5],[6],[7]			$ 52,945,000
2024 Operating Property Acquisitions | Hays Commerce Center 3 & 4
Asset Acquisition [Line Items]
Size (square feet) | ft²	[5],[6]			179,000
Date Acquired	[5],[6]			Aug. 19, 2024
Asset Acquisition, Consideration Transferred	[5],[6],[7]			$ 35,781,000
2024 Operating Property Acquisitions | Riverpoint Industrial Park
Asset Acquisition [Line Items]
Size (square feet) | ft²	[5],[6]			779,000
Date Acquired	[5],[6]			Nov. 12, 2024
Asset Acquisition, Consideration Transferred	[5],[6],[7]			$ 87,576,000
2024 Operating Property Acquisitions | DFW Global Logistics Centre 5-8
Asset Acquisition [Line Items]
Size (square feet) | ft²	[5],[6],[8]			492,000
Date Acquired	[5],[6],[8]			Nov. 21, 2024
Asset Acquisition, Consideration Transferred	[5],[6],[7],[8]			$ 75,852,000
2024 Operating Property Acquisitions | Akimel Gateway
Asset Acquisition [Line Items]
Size (square feet) | ft²	[5],[6],[8]			519,000
Date Acquired	[5],[6],[8]			Dec. 26, 2024
Asset Acquisition, Consideration Transferred	[5],[6],[7],[8]			$ 82,998,000
2024 development land acquisitions
Asset Acquisition [Line Items]
Acres of real estate investment property | ft²				61.1
Payments to Acquire Land				$ 13,762,000

[1] EastGroup applies the principles of Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) 842, Leases, and its related Accounting Standards Updates (“ASUs”) to account for its ground leases, which are classified as operating leases. The related operating lease liabilities for ground leases are included in Other liabilities on the Consolidated Balance Sheets.

[2] In-place lease intangibles and above market lease intangibles are each included in Other assets on the Consolidated Balance Sheets. These costs are amortized over the remaining terms of the associated leases in place at the time of acquisition.

[3] Below market lease intangibles are included in Other liabilities on the Consolidated Balance Sheets. These costs are amortized over the remaining terms of the associated leases in place at the time of acquisition.

[4] Operating lease liabilities - Ground leases are included in Other liabilities on the Consolidated Balance Sheets. These costs are amortized over the remaining terms of the associated leases in place at the time of acquisition.

[5] Operating properties are defined as stabilized real estate properties (land including buildings and improvements) in the Company’s operating portfolio; included in Real estate properties on the Consolidated Balance Sheets.

[6] Excludes acquired development land as discussed below.

[7] Cost is calculated in accordance with FASB ASC 805, Business Combinations, and represents the sum of the purchase price, closing costs and capitalized acquisition costs.

[8] This operating property is located on land subject to a ground lease. The right of use assets for ground leases are included in Real estate properties on the Consolidated Balance Sheets.