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Real Estate Schedule of Real Estate Properties (Details) - USD ($) $ in Thousands | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Real Estate Properties [Line Items] |  |  |
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)
Total real estate |  | 15,925,028 | 15,555,641
Boston Properties Limited Partnership |  |  |
Real Estate Properties [Line Items] |  |  |
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)
Total real estate |  | $ 15,597,508 | $ 15,214,325
[1] | Includes pre-development costs.

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- Definition Amount before accumulated depreciation of equipment commonly used in offices and stores that have no permanent connection to the structure of a building or utilities. Examples include, but are not limited to, desks, chairs, tables, and bookcases. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 + Details
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- Definition Aggregate of the carrying amounts as of the balance sheet date of investments in building and building improvements. + 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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