CONSOLIDATED STATEMENTS OF OPERATIONS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
REVENUES
Rental income	$ 598,059	$ 653,532	$ 1,195,661	$ 1,335,837
EXPENSES
Property and maintenance	107,746	104,452	224,800	220,268
Real estate taxes and insurance	97,401	95,038	200,871	192,770
Property management	24,455	23,608	50,585	51,317
General and administrative	14,678	11,835	30,061	26,353
Depreciation	200,673	205,976	400,635	418,398
Total expenses	444,953	440,909	906,952	909,106
Net gain (loss) on sales of real estate properties	223,738	144,266	223,695	352,243
Operating income	376,844	356,889	512,404	778,974
Interest and other income	24,104	1,511	24,320	3,471
Other expenses	(3,342)	(1,694)	(7,452)	(4,227)
Interest:
Expense incurred, net	(67,124)	(81,885)	(134,482)	(167,475)
Amortization of deferred financing costs	(1,939)	(2,111)	(4,124)	(4,152)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	328,543	272,710	390,666	606,591
Income and other tax (expense) benefit	(242)	(187)	(395)	(240)
Income (loss) from investments in unconsolidated entities	(261)	(1,042)	(1,872)	(2,199)
Net gain (loss) on sales of land parcels			5
Net income	328,040	271,481	388,404	604,152
Partially Owned Properties	(741)	(880)	(1,423)	(13,410)
Net income attributable to controlling interests	$ 316,386	$ 260,888	$ 373,925	$ 569,494
Earnings per Unit – basic:
Net income available to Units	$ 0.84	$ 0.70	$ 1.00	$ 1.53
Earnings per Unit – diluted:
Net income available to Units	$ 0.84	$ 0.70	$ 1.00	$ 1.53
Weighted average Units outstanding	387,820	385,913	387,367	386,272
ERPOP [Member]
REVENUES
Rental income	$ 598,059	$ 653,532	$ 1,195,661	$ 1,335,837
EXPENSES
Property and maintenance	107,746	104,452	224,800	220,268
Real estate taxes and insurance	97,401	95,038	200,871	192,770
Property management	24,455	23,608	50,585	51,317
General and administrative	14,678	11,835	30,061	26,353
Depreciation	200,673	205,976	400,635	418,398
Total expenses	444,953	440,909	906,952	909,106
Net gain (loss) on sales of real estate properties	223,738	144,266	223,695	352,243
Operating income	376,844	356,889	512,404	778,974
Interest and other income	24,104	1,511	24,320	3,471
Other expenses	(3,342)	(1,694)	(7,452)	(4,227)
Interest:
Expense incurred, net	(67,124)	(81,885)	(134,482)	(167,475)
Amortization of deferred financing costs	(1,939)	(2,111)	(4,124)	(4,152)
Income before income and other taxes, income (loss) from investments in unconsolidated entities and net gain (loss) on sales of land parcels	328,543	272,710	390,666	606,591
Income and other tax (expense) benefit	(242)	(187)	(395)	(240)
Income (loss) from investments in unconsolidated entities	(261)	(1,042)	(1,872)	(2,199)
Net gain (loss) on sales of land parcels			5
Net income	328,040	271,481	388,404	604,152
Partially Owned Properties	(741)	(880)	(1,423)	(13,410)
Net income attributable to controlling interests	327,299	270,601	386,981	590,742
ALLOCATION OF NET INCOME:
Preference Units	772	772	1,545	1,545
General Partner	315,614	260,116	372,380	567,949
Limited Partners	10,913	9,713	13,056	21,248
Net income available to Units	$ 326,527	$ 269,829	$ 385,436	$ 589,197
Earnings per Unit – basic:
Net income available to Units	$ 0.84	$ 0.70	$ 1.00	$ 1.53
Weighted average Units outstanding	385,856	384,818	385,594	384,702
Earnings per Unit – diluted:
Net income available to Units	$ 0.84	$ 0.70	$ 1.00	$ 1.53
Weighted average Units outstanding	387,820	385,913	387,367	386,272