CONSOLIDATED BALANCE SHEETS OF ERP OPERATING LIMITED PARTNERSHIP (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Investment in real estate
Land	$ 6,424,887	$ 6,295,404
Depreciable property	20,540,247	19,851,504
Projects under development	1,039,657	1,343,919
Land held for development	154,690	184,556
Investment in real estate	28,159,481	27,675,383
Accumulated depreciation	(5,914,695)	(5,432,805)
Investment in real estate, net	22,244,786	22,242,578
Cash and cash equivalents	37,366	40,080
Investments in unconsolidated entities	74,108	105,434
Deposits – restricted	135,674	72,303
Escrow deposits – mortgage	54,071	48,085
Deferred financing costs, net	57,001	58,380
Other assets	405,798	383,754
Total assets	23,008,804	22,950,614
Liabilities:
Mortgage notes payable	4,891,529	5,086,515
Notes, net	5,881,794	5,425,346
Line of credit and commercial paper	29,996	333,000
Accounts payable and accrued expenses	253,027	153,590
Accrued interest payable	86,083	89,540
Other liabilities	353,106	389,915
Security deposits	76,934	75,633
Distributions payable	209,086	188,566
Total liabilities	11,781,555	11,742,105
Redeemable Noncontrolling Interests	522,585	500,733
Partners' Capital:
Accumulated other comprehensive (loss)	(157,020)	(172,152)
Noncontrolling Interests – Partially Owned Properties	4,643	124,909
Total liabilities and equity	23,008,804	22,950,614
ERPOP [Member]
Investment in real estate
Land	6,424,887	6,295,404
Depreciable property	20,540,247	19,851,504
Projects under development	1,039,657	1,343,919
Land held for development	154,690	184,556
Investment in real estate	28,159,481	27,675,383
Accumulated depreciation	(5,914,695)	(5,432,805)
Investment in real estate, net	22,244,786	22,242,578
Cash and cash equivalents	37,366	40,080
Investments in unconsolidated entities	74,108	105,434
Deposits – restricted	135,674	72,303
Escrow deposits – mortgage	54,071	48,085
Deferred financing costs, net	57,001	58,380
Other assets	405,798	383,754
Total assets	23,008,804	22,950,614
Liabilities:
Mortgage notes payable	4,891,529	5,086,515
Notes, net	5,881,794	5,425,346
Line of credit and commercial paper	29,996	333,000
Accounts payable and accrued expenses	253,027	153,590
Accrued interest payable	86,083	89,540
Other liabilities	353,106	389,915
Security deposits	76,934	75,633
Distributions payable	209,086	188,566
Total liabilities	$ 11,781,555	$ 11,742,105
Commitments and contingencies
Partners' Capital:
Preference Units	$ 40,180	$ 50,000
General Partner	10,595,374	10,490,608
Limited Partners	221,487	214,411
Accumulated other comprehensive (loss)	(157,020)	(172,152)
Total partners' capital	10,700,021	10,582,867
Noncontrolling Interests – Partially Owned Properties	4,643	124,909
Total capital	10,704,664	10,707,776
Total liabilities and equity	$ 23,008,804	$ 22,950,614