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Real Estate (Tables) | 12 Months Ended
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Dec. 31, 2016
Real Estate Properties [Line Items] |
Schedule of Property Subject to or Available for Operating Lease | Boston Properties, Inc. Real estate consisted of the following at December 31 (in thousands):
|  | 2016 |  | 2015
Land |  | $ | 4,879,020 |  |  | $ | 4,806,021 |
Land held for future development (1) |  | 246,656 |  |  | 252,195 |
Buildings and improvements |  | 11,890,626 |  |  | 11,709,285 |
Tenant improvements |  | 2,060,315 |  |  | 1,920,247 |
Furniture, fixtures and equipment |  | 32,687 |  |  | 29,852 |
Construction in progress |  | 1,037,959 |  |  | 763,935 |
Total |  | 20,147,263 |  |  | 19,481,535 |
Less: Accumulated depreciation |  | (4,222,235 | ) |  | (3,925,894 | )
|  | $ | 15,925,028 |  |  | $ | 15,555,641 |
_______________
(1) | Includes pre-development costs.
Boston Properties Limited Partnership Real estate consisted of the following at December 31 (in thousands):
|  | 2016 |  | 2015
Land |  | $ | 4,774,460 |  |  | $ | 4,700,793 |
Land held for future development (1) |  | 246,656 |  |  | 252,195 |
Buildings and improvements |  | 11,581,795 |  |  | 11,394,119 |
Tenant improvements |  | 2,060,315 |  |  | 1,920,247 |
Furniture, fixtures and equipment |  | 32,687 |  |  | 29,852 |
Construction in progress |  | 1,037,959 |  |  | 763,935 |
Total |  | 19,733,872 |  |  | 19,061,141 |
Less: Accumulated depreciation |  | (4,136,364 | ) |  | (3,846,816 | )
|  | $ | 15,597,508 |  |  | $ | 15,214,325 |
_______________
(1) | Includes pre-development costs.
3625-3635 Peterson Way |
Real Estate Properties [Line Items] |
Schedule of Business Acquisitions, by Acquisition [Table Text Block] | The following table summarizes the allocation of the aggregate purchase price of 3625-3635 Peterson Way at the date of acquisition (in thousands).
Land | $ | 63,206 |
Building and improvements | 7,210 |
Tenant improvements | 7,669 |
In-place lease intangibles | 4,262 |
Below-market lease intangible | (4,347 | )
Net assets acquired | $ | 78,000 |
Schedule of Finite-Lived Intangible Assets Acquired as Part of Business Combination [Table Text Block] | The following table summarizes the estimated annual amortization of the acquired below-market lease intangible and the acquired in-place lease intangibles for 3625-3635 Peterson Way for the remainder of 2016 and each of the next four succeeding fiscal years (in thousands).
| Acquired In-Place Lease Intangibles |  | Acquired Below- Market Lease Intangible
Period from April 22, 2016 through December 31, 2016 | $ | 296 |  |  | $ | (589 | )
2017 | 444 |  |  | (884 | )
2018 | 444 |  |  | (884 | )
2019 | 444 |  |  | (884 | )
2020 | 444 |  |  | (884 | )

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- Definition Tabular disclosure of a material business combination completed during the period, including background, timing, and recognized assets and liabilities. This table does not include leveraged buyouts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1486-128463 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463 + Details
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- Definition Tabular disclosure of finite-lived intangible assets acquired as part of a business combination or through an asset purchase, by major class and in total, including the value of the asset acquired, any significant residual value (the expected value of the asset at the end of its useful life) and the weighted-average amortization period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=26713463&loc=d3e16265-109275 + Details
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- Definition Tabular disclosure of lessor's property under leasing agreements and property available for lease (not currently under lease) by property class, the gross amount, accumulated depreciation and net amount of as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6454179&loc=d3e41551-112718 + Details
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