CONSOLIDATED STATEMENTS OF OPERATIONS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
REVENUES
Rental income	$ 605,856	$ 694,245	$ 1,816,960	$ 2,035,359
Fee and asset management	218	2,044	3,351	6,413
Total revenues	606,074	696,289	1,820,311	2,041,772
EXPENSES
Property and maintenance	104,216	122,383	309,688	364,948
Real estate taxes and insurance	81,343	84,962	238,954	254,513
Property management	19,517	20,094	64,003	64,651
General and administrative	12,395	15,197	47,408	50,618
Depreciation	179,230	196,059	528,242	584,862
Total expenses	396,701	438,695	1,188,295	1,319,592
Operating income	209,373	257,594	632,016	722,180
Interest and other income	5,509	256	65,092	6,906
Other expenses	(10,420)	(1,139)	(14,480)	(2,839)
Interest:
Expense incurred, net	(86,352)	(114,298)	(386,316)	(333,946)
Amortization of deferred financing costs	(2,261)	(2,607)	(10,000)	(7,734)
Income before income and other taxes, income (loss) from investments in unconsolidated entities, net gain (loss) on sales of real estate properties and land parcels and discontinued operations	115,849	139,806	286,312	384,567
Income and other tax (expense) benefit	(426)	(329)	(1,189)	(698)
Income (loss) from investments in unconsolidated entities	7,750	(1,041)	5,846	14,388
Net gain on sales of real estate properties	90,036	66,939	3,870,871	295,692
Net gain (loss) on sales of land parcels	4,037	0	15,759	(1)
Income from continuing operations	217,246	205,375	4,177,599	693,948
Discontinued operations, net	246	81	124	350
Net income	217,492	205,456	4,177,723	694,298
Net (income) attributable to Noncontrolling Interests – Partially Owned Properties	(823)	(986)	(2,368)	(2,473)
Net income attributable to controlling interests	208,316	196,692	4,014,913	665,634
ALLOCATION OF NET INCOME:
Premium on redemption of Preference Units	$ 0	$ 0	$ 0	$ (2,789)
Earnings per Unit – basic:
Income from continuing operations available to Units	$ 0.57	$ 0.54	$ 11.00	$ 1.82
Net income available to Units	0.57	0.54	11.00	1.82
Earnings per Unit – diluted:
Income from continuing operations available to Units	0.56	0.53	10.92	1.80
Net income available to Units	$ 0.56	$ 0.53	$ 10.92	$ 1.80
Weighted Average Number of Shares/Units Outstanding, Diluted	382,373	380,663	382,284	380,423
ERPOP [Member]
REVENUES
Rental income	$ 605,856	$ 694,245	$ 1,816,960	$ 2,035,359
Fee and asset management	218	2,044	3,351	6,413
Total revenues	606,074	696,289	1,820,311	2,041,772
EXPENSES
Property and maintenance	104,216	122,383	309,688	364,948
Real estate taxes and insurance	81,343	84,962	238,954	254,513
Property management	19,517	20,094	64,003	64,651
General and administrative	12,395	15,197	47,408	50,618
Depreciation	179,230	196,059	528,242	584,862
Total expenses	396,701	438,695	1,188,295	1,319,592
Operating income	209,373	257,594	632,016	722,180
Interest and other income	5,509	256	65,092	6,906
Other expenses	(10,420)	(1,139)	(14,480)	(2,839)
Interest:
Expense incurred, net	(86,352)	(114,298)	(386,316)	(333,946)
Amortization of deferred financing costs	(2,261)	(2,607)	(10,000)	(7,734)
Income before income and other taxes, income (loss) from investments in unconsolidated entities, net gain (loss) on sales of real estate properties and land parcels and discontinued operations	115,849	139,806	286,312	384,567
Income and other tax (expense) benefit	(426)	(329)	(1,189)	(698)
Income (loss) from investments in unconsolidated entities	7,750	(1,041)	5,846	14,388
Net gain on sales of real estate properties	90,036	66,939	3,870,871	295,692
Net gain (loss) on sales of land parcels	4,037	0	15,759	(1)
Income from continuing operations	217,246	205,375	4,177,599	693,948
Discontinued operations, net	246	81	124	350
Net income	217,492	205,456	4,177,723	694,298
Net (income) attributable to Noncontrolling Interests – Partially Owned Properties	(823)	(986)	(2,368)	(2,473)
Net income attributable to controlling interests	216,669	204,470	4,175,355	691,825
ALLOCATION OF NET INCOME:
Preference Units	773	833	2,318	2,557
Premium on redemption of Preference Units	0	0	0	2,789
General Partner	207,543	195,859	4,012,595	660,288
Limited Partners	8,353	7,778	160,442	26,191
Net income available to Units	$ 215,896	$ 203,637	$ 4,173,037	$ 686,479
Earnings per Unit – basic:
Income from continuing operations available to Units	$ 0.57	$ 0.54	$ 11.00	$ 1.82
Net income available to Units	$ 0.57	$ 0.54	$ 11.00	$ 1.82
Weighted average Units outstanding	379,008	377,147	378,745	376,970
Earnings per Unit – diluted:
Income from continuing operations available to Units	$ 0.56	$ 0.53	$ 10.92	$ 1.80
Net income available to Units	$ 0.56	$ 0.53	$ 10.92	$ 1.80
Weighted Average Number of Shares/Units Outstanding, Diluted	382,373	380,663	382,284	380,423
Distributions declared per Unit outstanding	$ 3.50375	$ 0.5525	$ 12.51125	$ 1.6575