-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}

Real estate, at cost {ID5}

Construction in progress {ID6}

Land held for future development {ID7}

Less: accumulated depreciation {ID8}

Total real estate {ID9}

Cash and cash equivalents {ID10}

Cash held in escrows {ID11}

Investments in securities {ID12}

Tenant and other receivables (net of allowance for doubtful accounts of $4,618 and $4,006, respectively) {ID13}

Related party note receivable {ID14}

Accrued rental income (net of allowance of $2,698 and $15,440, respectively) {ID15}

Deferred charges, net {ID16}

Prepaid expenses and other assets {ID17}

Investments in unconsolidated joint ventures {ID18}

Total assets {ID19}

-LIABILITIES AND CAPITAL {ID20}

-Liabilities: {ID21}

Mortgage notes payable {ID22}

Unsecured senior notes (net of discount of $2,383 and $2,625, respectively) {ID23}

Unsecured exchangeable senior notes (net of discount of $18,387 and $21,101, respectively) {ID24}

Unsecured line of credit {ID25}

Accounts payable and accrued expenses {ID26}

Distributions payable {ID27}

Accrued interest payable {ID28}

-Other liabilities {ID29}

Total liabilities {ID30}

Commitments and contingencies {ID31}

-Noncontrolling interests: {ID32}

Redeemable partnership units-1,113,044 preferred units outstanding (1,460,688 common units at redemption value, if converted) at June 30, 2009 and December 31, 2008 {ID33}

Redeemable partnership units-19,875,443 and 19,909,070 common units and 1,459,840 and 946,509 long term incentive units outstanding at redemption value at June 30, 2009 and December 31, 2008, respectively {ID34}

-Capital: {ID35}

Boston Properties Limited Partnership partners' capital-1,598,839 and 1,420,362 general partner units and 136,949,822 and 119,760,293 limited partner units outstanding at June 30, 2009 and December 31, 2008, respectively {ID36}

Noncontrolling interests in property partnerships {ID37}

Total capital {ID38}

Total liabilities and capital {ID39}

-Network: (12 - Statement - Statement Of Financial Position Unclassified - Real Estate Operations (Parenthetical))

-Statement of Financial Position [Abstract] {ID40}

-Statement [Table] {ID41}

-Statement [Line Items] {ID42}

Tenant and other receivables, allowance for doubtful accounts {ID43}

Accrued rental income, allowance {ID44}

Unsecured senior notes, discount {ID45}

Unsecured exchangeable senior notes, discount {ID46}

Redeemable partnership units, preferred units outstanding {ID47}

Redeemable partnership units, common units at redemption value, if converted {ID48}

Redeemable partnership units, common units {ID49}

Redeemable partnership units, long term incentive units outstanding at redemption value {ID50}

Boston Properties Limited Partnership partners' capital, general partner units outstanding {ID51}

Boston Properties Limited Partnership partners' capital, limited partner units outstanding {ID52}

-Network: (13 - Statement - Statement Of Income Real Estate Investment Trusts)

-Income Statement [Abstract] {ID53}

-Statement [Table] {ID54}

-Statement [Line Items] {ID55}

-Revenue {ID56}

-Rental: {ID57}

Base rent {ID58}

Recoveries from tenants {ID59}

Parking and other {ID60}

Total rental revenue {ID61}

Hotel revenue {ID62}

Development and management services {ID63}

Interest and other {ID64}

Total revenue {ID65}

-Expenses {ID66}

-Real estate operating: {ID67}

Rental {ID68}

Hotel {ID69}

General and administrative {ID70}

Interest {ID71}

Depreciation and amortization {ID72}

Loss from suspension of development {ID73}

Net derivative losses {ID74}

Losses from early extinguishments of debt {ID75}

Losses (gains) from investments in securities {ID76}

Total expenses {ID77}

Income before income (loss) from unconsolidated joint ventures, gains on sales of real estate and net income attributable to noncontrolling interests {ID78}

Income (loss) from unconsolidated joint ventures {ID79}

Gains on sales of real estate {ID80}

Net income {ID81}

-Net income attributable to noncontrolling interests: {ID82}

Noncontrolling interests in property partnerships {ID83}

Noncontrolling interest-redeemable preferred units {ID84}

Net income attributable to Boston Properties Limited Partnership {ID85}

-Basic earnings per common unit attributable to Boston Properties Limited Partnership: {ID86}

Net income {ID87}

Weighted average number of common units outstanding {ID88}

-Diluted earnings per common unit attributable to Boston Properties Limited Partnership: {ID89}

Net income {ID90}

Weighted average number of common units outstanding-diluted {ID91}

-Network: (14 - Statement - Statement Of Other Comprehensive Income)

-Statement of Income and Comprehensive Income [Abstract] {ID92}

-Statement [Table] {ID93}

-Statement [Line Items] {ID94}

Net income {ID95}

-Other comprehensive income (loss): {ID96}

Net effective portion of interest rate contracts {ID97}

Amortization of interest rate contracts {ID98}

Other comprehensive income (loss) {ID99}

Comprehensive income {ID100}

Comprehensive income attributable to noncontrolling interests {ID101}

Comprehensive income attributable to Boston Properties Limited Partnership {ID102}

-Network: (15 - Statement - Statement Of Cash Flows Indirect Real Estate)

-Statement of Cash Flows [Abstract] {ID103}

-Statement [Table] {ID104}

-Statement [Line Items] {ID105}

-Cash flows from operating activities: {ID106}

Net income {ID107}

-Adjustments to reconcile net income to net cash provided by operating activities: {ID108}

Depreciation and amortization {ID109}

Non-cash portion of interest expense {ID110}

Non-cash compensation expense {ID111}

Non-cash rental revenue {ID112}

Losses from early extinguishments of debt {ID113}

Net derivative losses {ID114}

Losses (gains) from investments in securities {ID115}

Loss from suspension of development {ID116}

Income from unconsolidated joint ventures {ID117}

Distributions of net cash flow from operations of unconsolidated joint ventures {ID118}

Gains on sales of real estate {ID119}

-Change in assets and liabilities: {ID120}

Cash held in escrows {ID121}

Tenant and other receivables, net {ID122}

Accrued rental income, net {ID123}

Prepaid expenses and other assets {ID124}

Accounts payable and accrued expenses {ID125}

Accrued interest payable {ID126}

Other liabilities {ID127}

Tenant leasing costs {ID128}

Total adjustments {ID129}

Net cash provided by operating activities {ID130}

-Cash flows from investing activities: {ID131}

Acquisitions/additions to real estate {ID132}

Proceeds from redemptions of investments in securities {ID133}

Net investments in unconsolidated joint ventures {ID134}

Net proceeds from the sale/financing of real estate released from escrow {ID135}

Issuance of note receivable {ID136}

Proceeds from note receivable {ID137}

Net proceeds from the sales of real estate {ID138}

Net cash used in investing activities {ID139}

-Cash flows from financing activities: {ID140}

Borrowings on unsecured line of credit {ID141}

Repayments of unsecured line of credit {ID142}

Proceeds from mortgage notes payable {ID143}

Repayments of mortgage notes payable {ID144}

Payments on real estate financing transactions {ID145}

Advance from joint venture partners {ID146}

Distributions {ID147}

Net proceeds from equity transactions {ID148}

Distributions to noncontrolling interests in property partnerships, net {ID149}

Repayment of note payable {ID150}

Deferred financing costs {ID151}

Net cash provided by (used in) financing activities {ID152}

Net increase (decrease) in cash and cash equivalents {ID153}

Cash and cash equivalents, beginning of period {ID154}

Cash and cash equivalents, end of period {ID155}

-Supplemental disclosures: {ID156}

Cash paid for interest {ID157}

Interest capitalized {ID158}

-Non-cash investing and financing activities: {ID159}

Additions to real estate included in accounts payable {ID160}

Distributions declared but not paid {ID161}

Issuance of OP Units in connection with the acquisition of real estate {ID162}

Issuance of OP Units in connection with an investment in an unconsolidated joint venture {ID163}

Conversions of Redeemable partnership units to Partners' capital {ID164}

Note receivable issued in connection with the transfer of real estate {ID165}

Issuance of restricted securities to employees and directors {ID166}

-Network: (16 - Disclosure - Notes to Financial Statements)

-Notes to Financial Statements [Abstract] {ID167}

1. Organization {ID168}

2. Basis of Presentation and Summary of Significant Accounting Policies {ID169}

3. Real Estate Activity During the Six Months Ended June 30, 2009 {ID170}

4. Investments in Unconsolidated Joint Ventures {ID171}

5. Mortgage Notes Payable {ID172}

6. Unsecured Exchangeable Senior Notes {ID173}

7. Commitments and Contingencies {ID174}

8. Noncontrolling Interests {ID175}

9. Partners' Capital {ID176}

10. Earnings Per Common Unit {ID177}

11. Stock Option and Incentive Plan {ID178}

12. Segment Information {ID179}

13. Newly Issued Accounting Standards {ID180}

14. Subsequent Events {ID181}

-Network: (17 - Disclosure - Document Information)

-Document Information [Text Block] {ID182}

Document Type {ID183}

Amendment Flag {ID184}

Amendment Description {ID185}

Document Period End Date {ID186}

-Network: (18 - Disclosure - Entity Information)

-Entity [Text Block] {ID187}

Entity Registrant Name {ID188}

Entity Central Index Key {ID189}

Current Fiscal Year End Date {ID190}

Entity Well-known Seasoned Issuer {ID191}

Entity Current Reporting Status {ID192}

Entity Voluntary Filers {ID193}

Entity Filer Category {ID194}

BOSTON PROPERTIES LTD PARTNERSHIP XBRL Taxonomy Presentation Networks