CONSOLIDATED STATEMENTS OF OPERATIONS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
REVENUES
Rental income	$ 594,939	$ 676,508	$ 1,211,104	$ 1,341,114
Fee and asset management	215	2,604	3,133	4,369
Total revenues	595,154	679,112	1,214,237	1,345,483
EXPENSES
Property and maintenance	96,307	118,005	205,472	242,565
Real estate taxes and insurance	77,415	83,119	157,611	169,551
Property management	20,991	21,792	44,486	44,557
General and administrative	18,296	15,659	35,013	35,421
Depreciation	176,127	194,282	349,012	388,803
Total expenses	389,136	432,857	791,594	880,897
Operating income	206,018	246,255	422,643	464,586
Interest and other income	56,525	6,481	59,583	6,650
Other expenses	(1,504)	(1,770)	(4,060)	(1,700)
Interest:
Expense incurred, net	(86,472)	(110,866)	(299,964)	(219,648)
Amortization of deferred financing costs	(2,345)	(2,538)	(7,739)	(5,127)
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	172,222	137,562	170,463	244,761
Income and other tax (expense) benefit	(413)	(326)	(763)	(369)
(Loss) income from investments in unconsolidated entities	(800)	12,466	(1,904)	15,429
Net gain on sales of real estate properties	57,356	148,802	3,780,835	228,753
Net gain (loss) on sales of land parcels	0	0	11,722	(1)
Income from continuing operations	228,365	298,504	3,960,353	488,573
Discontinued operations, net	35	114	(122)	269
Net income	228,400	298,618	3,960,231	488,842
Net (income) attributable to Noncontrolling Interests – Partially Owned Properties	(781)	(844)	(1,545)	(1,487)
Net income attributable to controlling interests	218,839	286,420	3,806,597	468,942
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	$ 0.60	$ 0.79	$ 10.43	$ 1.28
Net income available to Units	0.60	0.79	10.43	1.28
Earnings per Unit – diluted:
Income from continuing operations available to Units	0.59	0.78	10.36	1.27
Net income available to Units	$ 0.59	$ 0.78	$ 10.36	$ 1.27
Weighted Average Number of Shares/Units Outstanding, Diluted	382,065	380,491	382,012	380,346
ERPOP [Member]
REVENUES
Rental income	$ 594,939	$ 676,508	$ 1,211,104	$ 1,341,114
Fee and asset management	215	2,604	3,133	4,369
Total revenues	595,154	679,112	1,214,237	1,345,483
EXPENSES
Property and maintenance	96,307	118,005	205,472	242,565
Real estate taxes and insurance	77,415	83,119	157,611	169,551
Property management	20,991	21,792	44,486	44,557
General and administrative	18,296	15,659	35,013	35,421
Depreciation	176,127	194,282	349,012	388,803
Total expenses	389,136	432,857	791,594	880,897
Operating income	206,018	246,255	422,643	464,586
Interest and other income	56,525	6,481	59,583	6,650
Other expenses	(1,504)	(1,770)	(4,060)	(1,700)
Interest:
Expense incurred, net	(86,472)	(110,866)	(299,964)	(219,648)
Amortization of deferred financing costs	(2,345)	(2,538)	(7,739)	(5,127)
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	172,222	137,562	170,463	244,761
Income and other tax (expense) benefit	(413)	(326)	(763)	(369)
(Loss) income from investments in unconsolidated entities	(800)	12,466	(1,904)	15,429
Net gain on sales of real estate properties	57,356	148,802	3,780,835	228,753
Net gain (loss) on sales of land parcels	0	0	11,722	(1)
Income from continuing operations	228,365	298,504	3,960,353	488,573
Discontinued operations, net	35	114	(122)	269
Net income	228,400	298,618	3,960,231	488,842
Net (income) attributable to Noncontrolling Interests – Partially Owned Properties	(781)	(844)	(1,545)	(1,487)
Net income attributable to controlling interests	227,619	297,774	3,958,686	487,355
ALLOCATION OF NET INCOME:
Preference Units	772	833	1,545	1,724
Premium on redemption of Preference Units	0	0	0	2,789
General Partner	218,067	285,587	3,805,052	464,429
Limited Partners	8,780	11,354	152,089	18,413
Net income available to Units	$ 226,847	$ 296,941	$ 3,957,141	$ 482,842
Earnings per Unit – basic:
Income from continuing operations available to Units	$ 0.60	$ 0.79	$ 10.43	$ 1.28
Net income available to Units	$ 0.60	$ 0.79	$ 10.43	$ 1.28
Weighted average Units outstanding	378,934	377,063	378,612	376,880
Earnings per Unit – diluted:
Income from continuing operations available to Units	$ 0.59	$ 0.78	$ 10.36	$ 1.27
Net income available to Units	$ 0.59	$ 0.78	$ 10.36	$ 1.27
Weighted Average Number of Shares/Units Outstanding, Diluted	382,065	380,491	382,012	380,346
Distributions declared per Unit outstanding	$ 0.50375	$ 0.5525	$ 9.0075	$ 1.105