ERP OPERATING LTD PARTNERSHIP XBRL Taxonomy Presentation Networks

-Network: (11 - Statement - Statement Of Financial Position Unclassified - Real Estate Operations)
-Statement of Financial Position [Abstract] {ID1}
-Statement [Table] {ID2}
-Statement [Line Items] {ID3}
-ASSETS {ID4}
-Investment in real estate {ID5}
Land {ID6}
Depreciable property {ID7}
Projects under development {ID8}
Land held for development {ID9}
Investment in real estate {ID10}
Accumulated depreciation {ID11}
Investment in real estate, net {ID12}
Cash and cash equivalents {ID13}
Investments in unconsolidated entities {ID14}
Deposits - restricted {ID15}
Escrow deposits - mortgage {ID16}
Deferred financing costs, net {ID17}
Other assets {ID18}
Total assets {ID19}
-LIABILITIES AND CAPITAL {ID20}
-Liabilities: {ID21}
Mortgage notes payable {ID22}
Notes, net {ID23}
Lines of credit {ID24}
Accounts payable and accrued expenses {ID25}
Accrued interest payable {ID26}
Other liabilities {ID27}
Security deposits {ID28}
Distributions payable {ID29}
Total liabilities {ID30}
Commitments and contingencies {ID31}
-Capital: {ID32}
-Partners' capital: {ID33}
Preference Units {ID34}
Preference Interests and Junior Preference Units {ID35}
General Partner {ID36}
Limited Partners {ID37}
Accumulated other comprehensive loss {ID38}
Total partners' capital {ID39}
Noncontrolling Interests - Partially Owned Properties {ID40}
Total capital {ID41}
Total liabilities and capital {ID42}
-Network: (12 - Statement - Statement Of Income Real Estate Excluding REITs)
-Income Statement [Abstract] {ID43}
-Statement [Table] {ID44}
-Statement [Line Items] {ID45}
-REVENUES {ID46}
Rental income {ID47}
Fee and asset management {ID48}
Total revenues {ID49}
-EXPENSES {ID50}
Property and maintenance {ID51}
Real estate taxes and insurance {ID52}
Property management {ID53}
Fee and asset management {ID54}
Depreciation {ID55}
General and administrative {ID56}
Impairment {ID57}
Total expenses {ID58}
Operating income {ID59}
Interest and other income {ID60}
Other expenses {ID61}
-Interest: {ID62}
Expense incurred, net {ID63}
Amortization of deferred financing costs {ID64}
Income before income and other taxes, (loss) from investments in unconsolidated entities, net gain (loss) on sales of unconsolidated entities and discontinued operations {ID65}
Income and other tax (expense) benefit {ID66}
(Loss) from investments in unconsolidated entities {ID67}
Net gain (loss) on sales of unconsolidated entities {ID68}
Income from continuing operations {ID69}
Discontinued operations, net {ID70}
Net income {ID71}
Net loss (income) attributable to Noncontrolling Interests - Partially Owned Properties {ID72}
Net income attributable to controlling interests {ID73}
-ALLOCATION OF NET INCOME: {ID74}
Preference Units {ID75}
Preference Interests and Junior Preference Units {ID76}
General Partner {ID77}
Limited Partners {ID78}
Net income available to Units {ID79}
-Earnings per Unit - basic: {ID80}
Income from continuing operations available to Units {ID81}
Net income available to Units {ID82}
Weighted average Units outstanding {ID83}
-Earnings per Unit - diluted: {ID84}
Income from continuing operations available to Units {ID85}
Net income available to Units {ID86}
Weighted average Units outstanding {ID87}
Distributions declared per Unit outstanding {ID88}
-Network: (13 - Statement - Statement Of Other Comprehensive Income)
-Statement of Income and Comprehensive Income [Abstract] {ID89}
-Statement [Table] {ID90}
-Statement [Line Items] {ID91}
-Comprehensive income: {ID92}
Net income {ID93}
-Other comprehensive income (loss) - derivative instruments: {ID94}
Unrealized holding gains (losses) arising during the period {ID95}
Losses reclassified into earnings from other comprehensive income {ID96}
Other {ID97}
-Other comprehensive income (loss) - other instruments: {ID98}
Unrealized holding gains (losses) arising during the period {ID99}
(Gains) realized during the period {ID100}
Comprehensive income {ID101}
Comprehensive loss (income) attributable to Noncontrolling Interests - Partially Owned Properties {ID102}
Comprehensive income attributable to controlling interests {ID103}
-Network: (14 - Statement - Statement Of Cash Flows Indirect Real Estate)
-Statement of Cash Flows [Abstract] {ID104}
-Statement [Table] {ID105}
-Statement [Line Items] {ID106}
-CASH FLOWS FROM OPERATING ACTIVITIES: {ID107}
Net income {ID108}
-Adjustments to reconcile net income to net cash provided by operating activities: {ID109}
Depreciation {ID110}
Amortization of deferred financing costs {ID111}
Amortization of discounts on investment securities {ID112}
Amortization of discounts and premiums on debt {ID113}
Amortization of deferred settlements on derivative instruments {ID114}
Impairment {ID115}
Write-off of pursuit costs {ID116}
Transaction costs {ID117}
Loss from investments in unconsolidated entities {ID118}
Distributions from unconsolidated entities - return on capital {ID119}
Net (gain) on sales of investment securities {ID120}
Net (gain) on sales of unconsolidated entities {ID121}
Net (gain) on sales of discontinued operations {ID122}
(Gain) on debt extinguishments {ID123}
Compensation paid with Company Common Shares {ID124}
-Changes in assets and liabilities: {ID125}
Decrease (increase) in deposits - restricted {ID126}
(Increase) in other assets {ID127}
Increase in accounts payable and accrued expenses {ID128}
(Decrease) in accrued interest payable {ID129}
(Decrease) in other liabilities {ID130}
(Decrease) increase in security deposits {ID131}
Net cash provided by operating activities {ID132}
-CASH FLOWS FROM INVESTING ACTIVITIES: {ID133}
Investment in real estate - acquisitions {ID134}
Investment in real estate - development/other {ID135}
Improvements to real estate {ID136}
Additions to non-real estate property {ID137}
Interest capitalized for real estate under development {ID138}
Proceeds from disposition of real estate, net {ID139}
Proceeds from disposition of unconsolidated entities {ID140}
Distributions from unconsolidated entities - return of capital {ID141}
Purchase of investment securities {ID142}
Proceeds from sale of investment securities {ID143}
Transaction costs {ID144}
(Increase) decrease in deposits on real estate acquisitions, net {ID145}
Decrease in mortgage deposits {ID146}
Acquisition of Noncontrolling Interests - Partially Owned Properties {ID147}
Net cash provided by (used for) investing activities {ID148}
-CASH FLOWS FROM FINANCING ACTIVITIES: {ID149}
Loan and bond acquisition costs {ID150}
-Mortgage notes payable: {ID151}
Proceeds {ID152}
Restricted cash {ID153}
Lump sum payoffs {ID154}
Scheduled principal repayments {ID155}
Prepayment premiums/fees {ID156}
-Notes, net: {ID157}
Lump sum payoffs {ID158}
Gain on debt extinguishments {ID159}
-Lines of credit: {ID160}
Proceeds {ID161}
Repayments {ID162}
Proceeds from (payments on) settlement of derivative instruments {ID163}
Proceeds from sale of OP Units {ID164}
Proceeds from exercise of EQR options {ID165}
OP Units repurchased and retired {ID166}
Payment of offering costs {ID167}
Other financing activities, net {ID168}
Contributions - Noncontrolling Interests - Partially Owned Properties {ID169}
Contributions - Limited Partners {ID170}
-Distributions: {ID171}
OP Units - General Partner {ID172}
Preference Units {ID173}
Preference Interests and Junior Preference Units {ID174}
OP Units - Limited Partners {ID175}
Noncontrolling Interests - Partially Owned Properties {ID176}
Net cash (used for) provided by financing activities {ID177}
Net (decrease) increase in cash and cash equivalents {ID178}
Cash and cash equivalents, beginning of period {ID179}
Cash and cash equivalents, end of period {ID180}
-SUPPLEMENTAL INFORMATION: {ID181}
Cash paid for interest, net of amounts capitalized {ID182}
Net cash paid for income and other taxes {ID183}
-Real estate acquisitions/dispositions/other: {ID184}
Mortgage loans assumed {ID185}
Valuation of OP Units issued {ID186}
Mortgage loans (assumed) by purchaser {ID187}
-Amortization of deferred financing costs: {ID188}
Investment in real estate, net {ID189}
Deferred financing costs, net {ID190}
-Amortization of discounts and premiums on debt: {ID191}
Investment in real estate, net {ID192}
Mortgage notes payable {ID193}
Notes, net {ID194}
-Amortization of deferred settlements on derivative instruments: {ID195}
Other liabilities {ID196}
Accumulated other comprehensive loss {ID197}
-Unrealized (gain) loss on derivative instruments: {ID198}
Other assets {ID199}
Mortgage notes payable {ID200}
Notes, net {ID201}
Other liabilities {ID202}
Accumulated other comprehensive loss {ID203}
-Proceeds from (payments on) settlement of derivative instruments: {ID204}
Other assets {ID205}
Other liabilities {ID206}
-Network: (15 - Statement - Statement Of Partners Capital)
-PARTNERS' CAPITAL {ID207}
Balance, beginning of year {ID208}
Issuance of LTIP Units {ID209}
-OP Unit Issuance: {ID210}
Conversion of Preference Units into OP Units held by General Partner {ID211}
Conversion of OP Units held by Limited Partners into OP Units held by General Partner {ID212}
Exercise of EQR share options {ID213}
EQR's Employee Share Purchase Plan (ESPP) {ID214}
-Accumulated other comprehensive income - derivative instruments: {ID215}
Unrealized holding gains arising during the period {ID216}
Losses reclassified into earnings from other comprehensive income {ID217}
Other {ID218}
Net loss (income) attributable to Noncontrolling Interests - Partially Owned Properties {ID219}
Conversion of 7.00% Series E Cumulative Convertible {ID220}
-Share-based employee compensation expense: {ID221}
EQR performance shares {ID222}
EQR restricted shares {ID223}
EQR share options {ID224}
EQR ESPP discount {ID225}
-Accumulated other comprehensive income - other instruments: {ID226}
Unrealized holding gains arising during the period {ID227}
(Gains) realized during the period {ID228}
Conversion of OP Units held by Limited Partners into OP Units held by General Partner {ID229}
Contributions by Noncontrolling Interests {ID230}
OP Units repurchased and retired {ID231}
Equity compensation associated with LTIP Units - Limited Partners {ID232}
Distributions to Noncontrolling Interests {ID233}
Offering costs {ID234}
Net income available to Units - Limited Partners {ID235}
Acquisition of additional ownership interest by Operating Partnership {ID236}
Net income available to Units - General Partner {ID237}
Units - Limited Partners distributions {ID238}
OP Units - General Partner distributions {ID239}
Supplemental Executive Retirement Plan (SERP) {ID240}
Acquisition of Noncontrolling Interests - Partially Owned Properties {ID241}
Adjustment for Limited Partners ownership in Operating Partnership {ID242}
Balance, end of period {ID243}
-Partner Type of Partners' Capital Account [Table] {ID244}
-Partner Type of Partners' Capital Account [Axis] {ID245}
-Partner Type of Partners' Capital Account, Name [Domain] {ID246}
PREFERENCE UNITS {ID247}
PREFERENCE INTERESTS AND JUNIOR PREFERENCE UNITS {ID248}
GENERAL PARTNER {ID249}
LIMITED PARTNERS {ID250}
ACCUMULATED OTHER COMPREHENSIVE LOSS {ID251}
NONCONTROLLING INTERESTS - PARTIALLY OWNED PROPERTIES {ID252}
-Network: (16 - Disclosure - Notes to Financial Statements)
-Notes to Financial Statements [Abstract] {ID253}
1.Business {ID254}
2.Summary of Significant Accounting Policies {ID255}
3.Capital {ID256}
4.Real Estate {ID257}
5.Commitments to Acquire/Dispose of Real Estate {ID258}
6.Investments in Partially Owned Entities {ID259}
7.Deposits - Restricted {ID260}
8.Mortgage Notes Payable {ID261}
9.Notes {ID262}
10.Lines of Credit {ID263}
11.Derivative and Other Fair Value Instruments {ID264}
12.Earnings Per Unit {ID265}
13.Discontinued Operations {ID266}
14.Commitments and Contingencies {ID267}
15.Reportable Segments {ID268}
16.Subsequent Events/Other {ID269}
-Network: (17 - Disclosure - Document Information)
-Document Information [Text Block] {ID270}
Document Type {ID271}
Amendment Flag {ID272}
Amendment Description {ID273}
Document Period End Date {ID274}
-Network: (18 - Disclosure - Entity Information)
-Entity [Text Block] {ID275}
Entity Registrant Name {ID276}
Entity Central Index Key {ID277}
Current Fiscal Year End Date {ID278}
Entity Well-known Seasoned Issuer {ID279}
Entity Current Reporting Status {ID280}
Entity Voluntary Filers {ID281}
Entity Filer Category {ID282}