CONSOLIDATED STATEMENTS OF OPERATIONS OF ERP OPERATING LIMITED PARTNERSHIP - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
REVENUES
Rental income	$ 2,873,964	$ 2,735,180	$ 2,463,997
EXPENSES
Property and maintenance	514,575	483,865	453,532
Real estate taxes and insurance	412,114	388,412	397,105
Property management	119,804	110,304	98,155
General and administrative	60,716	58,710	56,506
Depreciation	888,709	882,168	838,272
Total expenses	1,995,918	1,923,459	1,843,570
Net gain (loss) on sales of real estate properties	282,539	304,325	1,072,183
Impairment			(16,769)
Operating income	1,160,585	1,116,046	1,675,841
Interest and other income	22,345	2,193	25,666
Other expenses	(29,419)	(13,664)	(19,275)
Interest:
Expense incurred, net	(269,556)	(282,920)	(272,473)
Amortization of deferred financing costs	(8,941)	(8,729)	(8,737)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	875,014	812,926	1,401,022
Income and other tax (expense) benefit	(1,148)	(900)	(915)
Income (loss) from investments in unconsolidated entities	(5,378)	(5,031)	(3,398)
Net gain (loss) on sales of land parcels			5
Net income	868,488	806,995	1,396,714
Partially Owned Properties	(6,340)	(3,774)	(17,964)
Net income attributable to controlling interests	$ 835,438	$ 776,911	$ 1,332,850
Earnings per Unit – basic:
Net income available to Units	$ 2.2	$ 2.06	$ 3.56
Earnings per Unit – diluted:
Net income available to Units	$ 2.2	$ 2.05	$ 3.54
Weighted average Units outstanding	390,897	389,450	388,089
ERPOP [Member]
REVENUES
Rental income	$ 2,873,964	$ 2,735,180	$ 2,463,997
EXPENSES
Property and maintenance	514,575	483,865	453,532
Real estate taxes and insurance	412,114	388,412	397,105
Property management	119,804	110,304	98,155
General and administrative	60,716	58,710	56,506
Depreciation	888,709	882,168	838,272
Total expenses	1,995,918	1,923,459	1,843,570
Net gain (loss) on sales of real estate properties	282,539	304,325	1,072,183
Impairment			(16,769)
Operating income	1,160,585	1,116,046	1,675,841
Interest and other income	22,345	2,193	25,666
Other expenses	(29,419)	(13,664)	(19,275)
Interest:
Expense incurred, net	(269,556)	(282,920)	(272,473)
Amortization of deferred financing costs	(8,941)	(8,729)	(8,737)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	875,014	812,926	1,401,022
Income and other tax (expense) benefit	(1,148)	(900)	(915)
Income (loss) from investments in unconsolidated entities	(5,378)	(5,031)	(3,398)
Net gain (loss) on sales of land parcels			5
Net income	868,488	806,995	1,396,714
Partially Owned Properties	(6,340)	(3,774)	(17,964)
Net income attributable to controlling interests	862,148	803,221	1,378,750
ALLOCATION OF NET INCOME:
Preference Units	3,090	3,090	3,090
General Partner	832,348	773,821	1,329,760
Limited Partners	26,710	26,310	45,900
Net income available to Units	$ 859,058	$ 800,131	$ 1,375,660
Earnings per Unit – basic:
Net income available to Units	$ 2.2	$ 2.06	$ 3.56
Weighted average Units outstanding	389,954	388,045	386,096
Earnings per Unit – diluted:
Net income available to Units	$ 2.2	$ 2.05	$ 3.54
Weighted average Units outstanding	390,897	389,450	388,089