EQUITY RESIDENTIAL 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 EQUITY {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}
Redeemable Noncontrolling Interests - Operating Partnership {ID32}
-Equity: {ID33}
-Shareholders' equity: {ID34}
Preferred Shares of beneficial interest, $0.01 par value; 100,000,000 shares authorized; 1,950,925 shares issued and outstanding as of June 30, 2009 and 1,951,475 shares issued and outstanding as of December 31, 2008 {ID35}
Common Shares of beneficial interest, $0.01 par value; 1,000,000,000 shares authorized; 273,975,692 shares issued and outstanding as of June 30, 2009 and 272,786,760 shares issued and outstanding as of December 31, 2008 {ID36}
Paid in capital {ID37}
Retained earnings {ID38}
Accumulated other comprehensive loss {ID39}
Total shareholders' equity {ID40}
-Noncontrolling Interests: {ID41}
Operating Partnership {ID42}
Preference Interests and Units {ID43}
Partially Owned Properties {ID44}
Total Noncontrolling Interests {ID45}
Total equity {ID46}
Total liabilities and equity {ID47}
-Network: (12 - Statement - Statement Of Financial Position Unclassified - Real Estate Operations (Parenthetical))
-Statement of Financial Position [Abstract] {ID48}
-Statement [Table] {ID49}
-Statement [Line Items] {ID50}
Preferred Shares of beneficial interest, par value {ID51}
Preferred Shares of beneficial interest, shares authorized {ID52}
Preferred Shares of beneficial interest, shares issued {ID53}
Preferred Shares of beneficial interest, shares outstanding {ID54}
Common Shares of beneficial interest, par value {ID55}
Common Shares of beneficial interest, shares authorized {ID56}
Common Shares of beneficial interest, shares issued {ID57}
Common Shares of beneficial interest, shares outstanding {ID58}
-Network: (13 - Statement - Statement Of Income Real Estate Investment Trusts)
-Income Statement [Abstract] {ID59}
-Statement [Table] {ID60}
-Statement [Line Items] {ID61}
-REVENUES {ID62}
Rental income {ID63}
Fee and asset management {ID64}
Total revenues {ID65}
-EXPENSES {ID66}
Property and maintenance {ID67}
Real estate taxes and insurance {ID68}
Property management {ID69}
Fee and asset management {ID70}
Depreciation {ID71}
General and administrative {ID72}
Impairment {ID73}
Total expenses {ID74}
Operating income {ID75}
Interest and other income {ID76}
Other expenses {ID77}
-Interest: {ID78}
Expense incurred, net {ID79}
Amortization of deferred financing costs {ID80}
Income before income and other taxes, (loss) from investments in unconsolidated entities, net gain (loss) on sales of unconsolidated entities and discontinued operations {ID81}
Income and other tax (expense) benefit {ID82}
(Loss) from investments in unconsolidated entities {ID83}
Net gain (loss) on sales of unconsolidated entities {ID84}
Income from continuing operations {ID85}
Discontinued operations, net {ID86}
Net income {ID87}
-Net (income) loss attributable to Noncontrolling Interests: {ID88}
Operating Partnership {ID89}
Preference Interests and Units {ID90}
Partially Owned Properties {ID91}
Net income attributable to controlling interests {ID92}
Preferred distributions {ID93}
Net income available to Common Shares {ID94}
-Earnings per share - basic: {ID95}
Income from continuing operations available to Common Shares {ID96}
Net income available to Common Shares {ID97}
Weighted average Common Shares outstanding {ID98}
-Earnings per share - diluted: {ID99}
Income from continuing operations available to Common Shares {ID100}
Net income available to Common Shares {ID101}
Weighted average Common Shares outstanding {ID102}
Distributions declared per Common Share outstanding {ID103}
-Network: (14 - Statement - Statement Of Other Comprehensive Income)
-Statement of Income and Comprehensive Income [Abstract] {ID104}
-Statement [Table] {ID105}
-Statement [Line Items] {ID106}
-Comprehensive income: {ID107}
Net income {ID108}
-Other comprehensive income (loss) - derivative instruments: {ID109}
Unrealized holding gains (losses) arising during the period {ID110}
Losses reclassified into earnings from other comprehensive income {ID111}
Other {ID112}
-Other comprehensive income (loss) - other instruments: {ID113}
Unrealized holding gains (losses) arising during the period {ID114}
(Gains) realized during the period {ID115}
Comprehensive income {ID116}
Comprehensive (income) attributable to Noncontrolling Interests {ID117}
Comprehensive income attributable to controlling interests {ID118}
-Network: (15 - Statement - Statement Of Cash Flows Indirect Real Estate)
-Statement of Cash Flows [Abstract] {ID119}
-Statement [Table] {ID120}
-Statement [Line Items] {ID121}
-CASH FLOWS FROM OPERATING ACTIVITIES: {ID122}
Net income {ID123}
-Adjustments to reconcile net income to net cash provided by operating activities: {ID124}
Depreciation {ID125}
Amortization of deferred financing costs {ID126}
Amortization of discounts on investment securities {ID127}
Amortization of discounts and premiums on debt {ID128}
Amortization of deferred settlements on derivative instruments {ID129}
Impairment {ID130}
Write-off of pursuit costs {ID131}
Transaction costs {ID132}
Loss from investments in unconsolidated entities {ID133}
Distributions from unconsolidated entities - return on capital {ID134}
Net (gain) on sales of investment securities {ID135}
Net (gain) on sales of unconsolidated entities {ID136}
Net (gain) on sales of discontinued operations {ID137}
(Gain) on debt extinguishments {ID138}
Compensation paid with Company Common Shares {ID139}
-Changes in assets and liabilities: {ID140}
Decrease (increase) in deposits - restricted {ID141}
(Increase) in other assets {ID142}
Increase in accounts payable and accrued expenses {ID143}
(Decrease) in accrued interest payable {ID144}
(Decrease) in other liabilities {ID145}
(Decrease) increase in security deposits {ID146}
Net cash provided by operating activities {ID147}
-CASH FLOWS FROM INVESTING ACTIVITIES: {ID148}
Investment in real estate - acquisitions {ID149}
Investment in real estate - development/other {ID150}
Improvements to real estate {ID151}
Additions to non-real estate property {ID152}
Interest capitalized for real estate under development {ID153}
Proceeds from disposition of real estate, net {ID154}
Proceeds from disposition of unconsolidated entities {ID155}
Distributions from unconsolidated entities - return of capital {ID156}
Purchase of investment securities {ID157}
Proceeds from sale of investment securities {ID158}
Transaction costs {ID159}
(Increase) decrease in deposits on real estate acquisitions, net {ID160}
Decrease in mortgage deposits {ID161}
Acquisition of Noncontrolling Interests - Partially Owned Properties {ID162}
Net cash provided by (used for) investing activities {ID163}
-CASH FLOWS FROM FINANCING ACTIVITIES: {ID164}
Loan and bond acquisition costs {ID165}
-Mortgage notes payable: {ID166}
Proceeds {ID167}
Restricted cash {ID168}
Lump sum payoffs {ID169}
Scheduled principal repayments {ID170}
Prepayment premiums/fees {ID171}
-Notes, net: {ID172}
Lump sum payoffs {ID173}
Gain on debt extinguishments {ID174}
-Lines of credit: {ID175}
Proceeds {ID176}
Repayments {ID177}
Proceeds from (payments on) settlement of derivative instruments {ID178}
Proceeds from sale of Common Shares {ID179}
Proceeds from exercise of options {ID180}
Common Shares repurchased and retired {ID181}
Payment of offering costs {ID182}
Other financing activities, net {ID183}
Contributions - Noncontrolling Interests - Partially Owned Properties {ID184}
Contributions - Noncontrolling Interests - Operating Partnership {ID185}
-Distributions: {ID186}
Common Shares {ID187}
Preferred Shares {ID188}
Preference Interests and Units {ID189}
Noncontrolling Interests - Operating Partnership {ID190}
Noncontrolling Interests - Partially Owned Properties {ID191}
Net cash (used for) provided by financing activities {ID192}
Net (decrease) increase in cash and cash equivalents {ID193}
Cash and cash equivalents, beginning of period {ID194}
Cash and cash equivalents, end of period {ID195}
-SUPPLEMENTAL INFORMATION: {ID196}
Cash paid for interest, net of amounts capitalized {ID197}
Net cash paid for income and other taxes {ID198}
-Real estate acquisitions/dispositions/other: {ID199}
Mortgage loans assumed {ID200}
Valuation of OP Units issued {ID201}
Mortgage loans (assumed) by purchaser {ID202}
-Amortization of deferred financing costs: {ID203}
Investment in real estate, net {ID204}
Deferred financing costs, net {ID205}
-Amortization of discounts and premiums on debt: {ID206}
Investment in real estate, net {ID207}
Mortgage notes payable {ID208}
Notes, net {ID209}
-Amortization of deferred settlements on derivative instruments: {ID210}
Other liabilities {ID211}
Accumulated other comprehensive loss {ID212}
-Unrealized (gain) loss on derivative instruments: {ID213}
Other assets {ID214}
Mortgage notes payable {ID215}
Notes, net {ID216}
Other liabilities {ID217}
Accumulated other comprehensive loss {ID218}
-Proceeds from (payments on) settlement of derivative instruments: {ID219}
Other assets {ID220}
Other liabilities {ID221}
-Network: (16 - Statement - Statement Of Shareholders Equity And Other Comprehensive Income)
-Statement of Stockholders' Equity [Abstract] {ID222}
-Statement [Table] {ID223}
-Statement, Equity Components [Axis] {ID224}
-Equity Component [Domain] {ID225}
PREFERRED SHARES {ID226}
COMMON SHARES, $0.01 PAR VALUE {ID227}
PAID IN CAPITAL {ID228}
RETAINED EARNINGS {ID229}
ACCUMULATED OTHER COMPREHENSIVE LOSS {ID230}
OPERATING PARTNERSHIP {ID231}
PREFERENCE INTERESTS AND UNITS {ID232}
PARTIALLY OWNED PROPERTIES {ID233}
-Statement [Line Items] {ID234}
Balance, beginning of year {ID235}
-Common Share Issuance: {ID236}
Conversion of Preferred Shares into Common Shares {ID237}
Conversion of OP Units into Common Shares {ID238}
Exercise of share options {ID239}
Employee Share Purchase Plan (ESPP) {ID240}
Issuance of LTIP Units to Noncontrolling Interests {ID241}
-Accumulated other comprehensive income - derivative instruments: {ID242}
Unrealized holding gains arising during the period {ID243}
Losses reclassified into earnings from other comprehensive income {ID244}
Other {ID245}
Conversion of OP Units into Common Shares {ID246}
Conversion of 7.00% Series E Cumulative Convertible {ID247}
-Share-based employee compensation expense: {ID248}
Performance shares {ID249}
Restricted shares {ID250}
Share options {ID251}
ESPP discount {ID252}
Conversion of OP Units held by Noncontrolling Interests into OP Units held by General Partner {ID253}
-Accumulated other comprehensive income - other instruments: {ID254}
Unrealized holding gains arising during the period {ID255}
(Gains) realized during the period {ID256}
Employee Share Purchase Plan (ESPP) {ID257}
Common Shares repurchased and retired {ID258}
Equity compensation associated with Noncontrolling Interests {ID259}
-Share-based employee compensation expense: {ID260}
Restricted/performance shares {ID261}
Offering costs {ID262}
Net income (loss) {ID263}
Supplemental Executive Retirement Plan (SERP) {ID264}
Contributions by Noncontrolling Interests {ID265}
Common Share distributions {ID266}
Acquisition of Noncontrolling Interests - Partially Owned Properties {ID267}
Distributions to Noncontrolling Interests {ID268}
Preferred Share distributions {ID269}
Change in market value of Redeemable Noncontrolling Interests - Operating Partnership {ID270}
Change in carrying value of Redeemable Noncontrolling Interests - Operating Partnership {ID271}
Acquisition of additional ownership interest by Operating Partnership {ID272}
Adjustment for Noncontrolling Interests ownership in Operating Partnership {ID273}
Balance, end of period {ID274}
-Network: (17 - Disclosure - Notes to Financial Statements)
-Notes to Financial Statements [Abstract] {ID275}
1.Business {ID276}
2.Summary of Significant Accounting Policies {ID277}
3.Equity and Redeemable Noncontrolling Interests {ID278}
4.Real Estate {ID279}
5.Commitments to Acquire/Dispose of Real Estate {ID280}
6.Investments in Partially Owned Entities {ID281}
7.Deposits - Restricted {ID282}
8.Mortgage Notes Payable {ID283}
9.Notes {ID284}
10.Lines of Credit {ID285}
11.Derivative and Other Fair Value Instruments {ID286}
12.Earnings Per Share {ID287}
13.Discontinued Operations {ID288}
14.Commitments and Contingencies {ID289}
15.Reportable Segments {ID290}
16.Subsequent Events/Other {ID291}
-Network: (18 - Disclosure - Document Information)
-Document Information [Text Block] {ID292}
Document Type {ID293}
Amendment Flag {ID294}
Amendment Description {ID295}
Document Period End Date {ID296}
-Network: (19 - Disclosure - Entity Information)
-Entity [Text Block] {ID297}
Trading Symbol {ID298}
Entity Registrant Name {ID299}
Entity Central Index Key {ID300}
Current Fiscal Year End Date {ID301}
Entity Well-known Seasoned Issuer {ID302}
Entity Current Reporting Status {ID303}
Entity Voluntary Filers {ID304}
Entity Filer Category {ID305}
Entity Common Stock, Shares Outstanding {ID306}
Entity Public Float {ID307}