CONSOLIDATED STATEMENTS OF OPERATIONS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
REVENUES
Rental income	$ 623,951	$ 605,856	$ 1,840,170	$ 1,816,960
Fee and asset management	171	218	532	3,351
Total revenues	624,122	606,074	1,840,702	1,820,311
EXPENSES
Property and maintenance	104,721	104,216	306,645	309,688
Real estate taxes and insurance	84,087	81,343	253,318	238,954
Property management	20,861	19,517	64,702	64,003
General and administrative	12,567	12,395	40,366	47,408
Depreciation	184,100	179,230	542,964	528,242
Total expenses	406,336	396,701	1,207,995	1,188,295
Operating income	217,786	209,373	632,707	632,016
Interest and other income	3,945	5,509	5,708	65,092
Other expenses	(1,028)	(10,420)	(3,160)	(14,480)
Interest:
Expense incurred, net	(91,145)	(86,352)	(288,579)	(386,316)
Amortization of deferred financing costs	(2,064)	(2,261)	(6,447)	(10,000)
Income before income and other taxes, (loss) income from investments in unconsolidated entities, net gain on sales of real estate properties and land parcels and discontinued operations	127,494	115,849	340,229	286,312
Income and other tax (expense) benefit	(228)	(426)	(710)	(1,189)
(Loss) income from investments in unconsolidated entities	(398)	7,750	(2,153)	5,846
Net gain on sales of real estate properties	17,328	90,036	141,761	3,870,871
Net gain on sales of land parcels		4,037	19,170	15,759
Income from continuing operations	144,196	217,246	498,297	4,177,599
Discontinued operations, net	0	246	0	124
Net income	144,196	217,492	498,297	4,177,723
Net (income) attributable to Noncontrolling Interests – Partially Owned Properties	(801)	(823)	(2,354)	(2,368)
Net income attributable to controlling interests	$ 138,229	$ 208,316	$ 478,012	$ 4,014,913
Earnings per Unit – basic:
Income from continuing operations available to Units	$ 0.37	$ 0.57	$ 1.30	$ 11.00
Net income available to Units	0.37	0.57	1.30	11.00
Earnings per Unit – diluted:
Income from continuing operations available to Units	0.37	0.56	1.29	10.92
Net income available to Units	$ 0.37	$ 0.56	$ 1.29	$ 10.92
Weighted average Units outstanding	382,945	382,373	382,640	382,284
ERPOP [Member]
REVENUES
Rental income	$ 623,951	$ 605,856	$ 1,840,170	$ 1,816,960
Fee and asset management	171	218	532	3,351
Total revenues	624,122	606,074	1,840,702	1,820,311
EXPENSES
Property and maintenance	104,721	104,216	306,645	309,688
Real estate taxes and insurance	84,087	81,343	253,318	238,954
Property management	20,861	19,517	64,702	64,003
General and administrative	12,567	12,395	40,366	47,408
Depreciation	184,100	179,230	542,964	528,242
Total expenses	406,336	396,701	1,207,995	1,188,295
Operating income	217,786	209,373	632,707	632,016
Interest and other income	3,945	5,509	5,708	65,092
Other expenses	(1,028)	(10,420)	(3,160)	(14,480)
Interest:
Expense incurred, net	(91,145)	(86,352)	(288,579)	(386,316)
Amortization of deferred financing costs	(2,064)	(2,261)	(6,447)	(10,000)
Income before income and other taxes, (loss) income from investments in unconsolidated entities, net gain on sales of real estate properties and land parcels and discontinued operations	127,494	115,849	340,229	286,312
Income and other tax (expense) benefit	(228)	(426)	(710)	(1,189)
(Loss) income from investments in unconsolidated entities	(398)	7,750	(2,153)	5,846
Net gain on sales of real estate properties	17,328	90,036	141,761	3,870,871
Net gain on sales of land parcels		4,037	19,170	15,759
Income from continuing operations	144,196	217,246	498,297	4,177,599
Discontinued operations, net	0	246	0	124
Net income	144,196	217,492	498,297	4,177,723
Net (income) attributable to Noncontrolling Interests – Partially Owned Properties	(801)	(823)	(2,354)	(2,368)
Net income attributable to controlling interests	143,395	216,669	495,943	4,175,355
ALLOCATION OF NET INCOME:
Preference Units	772	773	2,318	2,318
General Partner	137,457	207,543	475,694	4,012,595
Limited Partners	5,166	8,353	17,931	160,442
Net income available to Units	$ 142,623	$ 215,896	$ 493,625	$ 4,173,037
Earnings per Unit – basic:
Income from continuing operations available to Units	$ 0.37	$ 0.57	$ 1.30	$ 11.00
Net income available to Units	$ 0.37	$ 0.57	$ 1.30	$ 11.00
Weighted average Units outstanding	379,906	379,008	379,716	378,745
Earnings per Unit – diluted:
Income from continuing operations available to Units	$ 0.37	$ 0.56	$ 1.29	$ 10.92
Net income available to Units	$ 0.37	$ 0.56	$ 1.29	$ 10.92
Weighted average Units outstanding	382,945	382,373	382,640	382,284
Distributions declared per Unit outstanding	$ 0.50375	$ 3.50375	$ 1.51125	$ 12.51125