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Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
General Partners' Capital Account, Units Outstanding (in units) | 1,719,540 |
Limited Partners' Capital Account, Units Outstanding (in units) | 152,605,746 |
Excess stock, par value | $ 0.01 | $ 0.01
Excess stock, shares authorized | 150,000,000 | 150,000,000
Excess stock, shares issued | 0 | 0
Excess stock, shares outstanding | 0 | 0
Preferred stock, par value | $ 0.01 | $ 0.01
Preferred stock, shares authorized | 50,000,000 | 50,000,000
Common stock, par value | $ 0.01 | $ 0.01
Common stock, shares authorized | 250,000,000 | 250,000,000
Common stock, shares issued | 154,404,186 | 153,869,075
Common stock, shares outstanding | 154,325,286 | 153,790,175
Treasury common stock at cost, shares | 78,900 | 78,900
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,172,718 and $6,760,078 at December 31, 2017 and 2016, respectively ) | $ 21,096,642 | $ 20,147,263
Less: accumulated depreciation (amounts related to VIEs of $(854,172) and $(758,640) at December 31, 2017 and 2016, respectively | (4,589,634) | (4,222,235)
Cash and cash equivalents (amounts related to VIEs of $304,955 and $253,999 at December 31, 2017 and 2016, respectively) | 434,767 | 356,914
Cash held in escrows (amounts related to VIEs of $6,135 and $4,955 at December 31, 2017 and 2016, respectively) | 70,602 | 63,174
Tenant and other receivables, net (amounts related to VIEs of $27,057 and $23,525 at December 31, 2017 and 2016, respectively) | 92,186 | 92,548
Accrued rental income, net (amounts related to VIEs of $242,589 and $224,185 at December 31, 2017 and 2016, respectively) | 861,575 | 799,138
Deferred charges, net (amounts related to VIEs of $281,678 and $290,436 at December 31, 2017 and 2016, respectively) | 679,038 | 686,163
Prepaid expenses and other assets (amounts related to VIEs of $33,666 and $42,718 at December 31, 2017 and 2016, respectively) | 77,971 | 129,666
Mortgage notes payable, net (amounts related to VIEs of $2,939,183 and $2,018,483 at December 31, 2017 and 2016, respectively) | 2,979,281 | 2,063,087
Mezzanine notes payable (amounts related to VIEs of $0 and $307,093 at December 31, 2017 and 2016, respectively) | 0 | 307,093
Accounts Payable and Accrued Liabilities | 331,500 | 298,524
Accrued interest payable (amounts related to VIEs of $6,907 and $162,226 at December 31, 2017 and 2016, respectively) | 83,646 | 243,933
Other liabilities (amounts related to VIEs of $164,806 and $175,146 at December 31, 2017 and 2016, respectively) | $ 443,980 | $ 450,821
Series B Cumulative Redeemable Preferred Stock / Unit [Member] |  |
Preferred stock, par value | $ 0.01 | $ 0
Preferred stock, shares authorized | 92,000 | 92,000
Series B Dividend Rate Percentage | 5.25% | 5.25%
Preferred stock / units, shares / units issued (in shares / units) | 80,000 | 80,000
Series B Liquidation Preference Per Share/ Unit | $ 2,500.00 | $ 2,500
Preferred stock / units, shares / units outstanding (in shares / units) | 80,000 | 80,000
Boston Properties Limited Partnership |  |
Redeemable Partnership Units Common Units Shares Outstanding (in units) | 16,810,378 | 17,079,511
Redeemable Partnership Units Common Units Long Term Incentive Units At Redemption Value Units Outstanding (in units) | 818,343 | 904,588
General Partners' Capital Account, Units Outstanding (in units) | 1,719,540 | 1,717,743
Limited Partners' Capital Account, Units Outstanding (in units) | 152,605,746 | 152,072,432
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,172,718 and $6,760,078 at December 31, 2017 and 2016, respectively ) | $ 20,685,164 | $ 19,733,872
Less: accumulated depreciation (amounts related to VIEs of $(854,172) and $(758,640) at December 31, 2017 and 2016, respectively | (4,496,959) | (4,136,364)
Cash and cash equivalents (amounts related to VIEs of $304,955 and $253,999 at December 31, 2017 and 2016, respectively) | 434,767 | 356,914
Cash held in escrows (amounts related to VIEs of $6,135 and $4,955 at December 31, 2017 and 2016, respectively) | 70,602 | 63,174
Tenant and other receivables, net (amounts related to VIEs of $27,057 and $23,525 at December 31, 2017 and 2016, respectively) | 92,186 | 92,548
Accrued rental income, net (amounts related to VIEs of $242,589 and $224,185 at December 31, 2017 and 2016, respectively) | 861,575 | 799,138
Deferred charges, net (amounts related to VIEs of $281,678 and $290,436 at December 31, 2017 and 2016, respectively) | 679,038 | 686,163
Prepaid expenses and other assets (amounts related to VIEs of $33,666 and $42,718 at December 31, 2017 and 2016, respectively) | 77,971 | 129,666
Mortgage notes payable, net (amounts related to VIEs of $2,939,183 and $2,018,483 at December 31, 2017 and 2016, respectively) | 2,979,281 | 2,063,087
Mezzanine notes payable (amounts related to VIEs of $0 and $307,093 at December 31, 2017 and 2016, respectively) | 0 | 307,093
Accounts Payable and Accrued Liabilities | 331,500 | 298,524
Accrued interest payable (amounts related to VIEs of $6,907 and $162,226 at December 31, 2017 and 2016, respectively) | 83,646 | 243,933
Other liabilities (amounts related to VIEs of $164,806 and $175,146 at December 31, 2017 and 2016, respectively) | $ 443,980 | $ 450,821
Boston Properties Limited Partnership | Series B Cumulative Redeemable Preferred Stock / Unit [Member] |  |
Series B Dividend Rate Percentage | 5.25% | 5.25%
Preferred stock / units, shares / units issued (in shares / units) | 80,000 | 80,000
Series B Liquidation Preference Per Share/ Unit | $ 2,500 | $ 2,500
Preferred stock / units, shares / units outstanding (in shares / units) | 80,000 | 80,000
Variable Interest Entity, Primary Beneficiary [Member] |  |
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,172,718 and $6,760,078 at December 31, 2017 and 2016, respectively ) | $ 7,172,718 | $ 6,760,078
Less: accumulated depreciation (amounts related to VIEs of $(854,172) and $(758,640) at December 31, 2017 and 2016, respectively | (854,172) | (758,640)
Cash and cash equivalents (amounts related to VIEs of $304,955 and $253,999 at December 31, 2017 and 2016, respectively) | 304,955 | 253,999
Cash held in escrows (amounts related to VIEs of $6,135 and $4,955 at December 31, 2017 and 2016, respectively) | 6,135 | 4,955
Tenant and other receivables, net (amounts related to VIEs of $27,057 and $23,525 at December 31, 2017 and 2016, respectively) | 27,057 | 23,525
Accrued rental income, net (amounts related to VIEs of $242,589 and $224,185 at December 31, 2017 and 2016, respectively) | 242,589 | 224,185
Deferred charges, net (amounts related to VIEs of $281,678 and $290,436 at December 31, 2017 and 2016, respectively) | 281,678 | 290,436
Prepaid expenses and other assets (amounts related to VIEs of $33,666 and $42,718 at December 31, 2017 and 2016, respectively) | 33,666 | 42,718
Mortgage notes payable, net (amounts related to VIEs of $2,939,183 and $2,018,483 at December 31, 2017 and 2016, respectively) | 2,939,183 | 2,018,483
Mezzanine notes payable (amounts related to VIEs of $0 and $307,093 at December 31, 2017 and 2016, respectively) | 0 | 307,093
Outside member's notes payable | 0 | 180,000
Accounts Payable and Accrued Liabilities | 106,683 | 110,457
Accrued interest payable (amounts related to VIEs of $6,907 and $162,226 at December 31, 2017 and 2016, respectively) | 6,907 | 162,226
Other liabilities (amounts related to VIEs of $164,806 and $175,146 at December 31, 2017 and 2016, respectively) | 164,806 | 175,146
Variable Interest Entity, Primary Beneficiary [Member] | Boston Properties Limited Partnership |  |
Real estate, at cost (amounts related to variable interest entities (“VIEs”) of $7,172,718 and $6,760,078 at December 31, 2017 and 2016, respectively ) | 7,172,718 | 6,760,078
Less: accumulated depreciation (amounts related to VIEs of $(854,172) and $(758,640) at December 31, 2017 and 2016, respectively | (854,172) | (758,640)
Cash and cash equivalents (amounts related to VIEs of $304,955 and $253,999 at December 31, 2017 and 2016, respectively) | 304,955 | 253,999
Cash held in escrows (amounts related to VIEs of $6,135 and $4,955 at December 31, 2017 and 2016, respectively) | 6,135 | 4,955
Tenant and other receivables, net (amounts related to VIEs of $27,057 and $23,525 at December 31, 2017 and 2016, respectively) | 27,057 | 23,525
Accrued rental income, net (amounts related to VIEs of $242,589 and $224,185 at December 31, 2017 and 2016, respectively) | 242,589 | 224,185
Deferred charges, net (amounts related to VIEs of $281,678 and $290,436 at December 31, 2017 and 2016, respectively) | 281,678 | 290,436
Prepaid expenses and other assets (amounts related to VIEs of $33,666 and $42,718 at December 31, 2017 and 2016, respectively) | 33,666 | 42,718
Mortgage notes payable, net (amounts related to VIEs of $2,939,183 and $2,018,483 at December 31, 2017 and 2016, respectively) | 2,939,183 | 2,018,483
Mezzanine notes payable (amounts related to VIEs of $0 and $307,093 at December 31, 2017 and 2016, respectively) | 0 | 307,093
Outside member's notes payable | 0 | 180,000
Accounts Payable and Accrued Liabilities | 106,683 | 110,457
Accrued interest payable (amounts related to VIEs of $6,907 and $162,226 at December 31, 2017 and 2016, respectively) | 6,907 | 162,226
Other liabilities (amounts related to VIEs of $164,806 and $175,146 at December 31, 2017 and 2016, respectively) | $ 164,806 | $ 175,146

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- Definition The per share liquidation preference (or restrictions) of nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21475-112644 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21484-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08(d)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(d)(1)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The maximum number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) permitted to be issued by an entity's charter and bylaws. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Total number of nonredeemable preferred shares (or preferred stock redeemable solely at the option of the issuer) issued to shareholders (includes related preferred shares that were issued, repurchased, and remain in the treasury). May be all or portion of the number of preferred shares authorized. Excludes preferred shares that are classified as debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Aggregate share number for all nonredeemable preferred stock (or preferred stock redeemable solely at the option of the issuer) held by stockholders. Does not include preferred shares that have been repurchased. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The cumulative amount of depreciation for real estate property held for investment purposes. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(3)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition Amount of real estate investment property which may include the following: (1) land available-for-sale; (2) land available-for-development; (3) investments in building and building improvements; (4) tenant allowances; (5) developments in-process; (6) rental properties; and (7) other real estate investments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.1(d)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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- Definition The carrying amounts of cash and cash equivalent items which are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. For a classified balance sheet represents the current portion only (the noncurrent portion has a separate concept); there is a separate and distinct element for unclassified presentations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Number of common and preferred shares that were previously issued and that were repurchased by the issuing entity and held in treasury on the financial statement date. This stock has no voting rights and receives no dividends. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.29,30) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655 + Details
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