CONSOLIDATED STATEMENTS OF OPERATIONS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
REVENUES
Rental income	$ 616,165	$ 664,606
Fee and asset management	2,918	1,765
Total revenues	619,083	666,371
EXPENSES
Property and maintenance	109,165	124,560
Real estate taxes and insurance	80,196	86,432
Property management	23,495	22,765
General and administrative	16,717	19,762
Depreciation	172,885	194,521
Total expenses	402,458	448,040
Operating income	216,625	218,331
Interest and other income	3,058	169
Other expenses	(2,556)	70
Interest:
Expense incurred, net	(213,492)	(108,782)
Amortization of deferred financing costs	(5,394)	(2,589)
(Loss) income before income and other taxes, (loss) income from investments in unconsolidated entities, net gain (loss) on sales of real estate properties and land parcels and discontinued operations	(1,759)	107,199
Income and other tax (expense) benefit	(350)	(43)
(Loss) income from investments in unconsolidated entities	(1,104)	2,963
Net gain on sales of real estate properties	3,723,479	79,951
Net gain (loss) on sales of land parcels	11,722	(1)
Income from continuing operations	3,731,988	190,069
Discontinued operations, net	(157)	155
Net income	3,731,831	190,224
Net (income) attributable to Noncontrolling Interests – Partially Owned Properties	(764)	(643)
Net income attributable to controlling interests	3,587,758	182,522
ALLOCATION OF NET INCOME:
Premium on redemption of Preference Units	$ 0	$ (2,789)
Earnings per Unit – basic:
Income from continuing operations available to Units	$ 9.84	$ 0.49
Net income available to Units	9.84	0.49
Earnings per Unit – diluted:
Income from continuing operations available to Units	9.76	0.49
Net income available to Units	$ 9.76	$ 0.49
Weighted Average Number of Shares/Units Outstanding, Diluted	382,243	380,327
ERPOP [Member]
REVENUES
Rental income	$ 616,165	$ 664,606
Fee and asset management	2,918	1,765
Total revenues	619,083	666,371
EXPENSES
Property and maintenance	109,165	124,560
Real estate taxes and insurance	80,196	86,432
Property management	23,495	22,765
General and administrative	16,717	19,762
Depreciation	172,885	194,521
Total expenses	402,458	448,040
Operating income	216,625	218,331
Interest and other income	3,058	169
Other expenses	(2,556)	70
Interest:
Expense incurred, net	(213,492)	(108,782)
Amortization of deferred financing costs	(5,394)	(2,589)
(Loss) income before income and other taxes, (loss) income from investments in unconsolidated entities, net gain (loss) on sales of real estate properties and land parcels and discontinued operations	(1,759)	107,199
Income and other tax (expense) benefit	(350)	(43)
(Loss) income from investments in unconsolidated entities	(1,104)	2,963
Net gain on sales of real estate properties	3,723,479	79,951
Net gain (loss) on sales of land parcels	11,722	(1)
Income from continuing operations	3,731,988	190,069
Discontinued operations, net	(157)	155
Net income	3,731,831	190,224
Net (income) attributable to Noncontrolling Interests – Partially Owned Properties	(764)	(643)
Net income attributable to controlling interests	3,731,067	189,581
ALLOCATION OF NET INCOME:
Preference Units	773	891
Premium on redemption of Preference Units	0	2,789
General Partner	3,586,985	178,842
Limited Partners	143,309	7,059
Net income available to Units	$ 3,730,294	$ 185,901
Earnings per Unit – basic:
Income from continuing operations available to Units	$ 9.84	$ 0.49
Net income available to Units	$ 9.84	$ 0.49
Weighted average Units outstanding	378,289	376,696
Earnings per Unit – diluted:
Income from continuing operations available to Units	$ 9.76	$ 0.49
Net income available to Units	$ 9.76	$ 0.49
Weighted Average Number of Shares/Units Outstanding, Diluted	382,243	380,327
Distributions declared per Unit outstanding	$ 8.50375	$ 0.5525